From: owner-utah-astronomy-digest@lists.xmission.com (utah-astronomy-digest) To: utah-astronomy-digest@lists.xmission.com Subject: utah-astronomy-digest V1 #62 Reply-To: utah-astronomy-digest Sender: owner-utah-astronomy-digest@lists.xmission.com Errors-To: owner-utah-astronomy-digest@lists.xmission.com Precedence: bulk utah-astronomy-digest Wednesday, October 10 2001 Volume 01 : Number 062 ---------------------------------------------------------------------- Date: Wed, 10 Oct 2001 07:48:46 -0600 From: Patrick Wiggins Subject: (utah-astronomy) Re: Gateway Hi, Nothing firm but probably late next year. Patrick :-) Jim Stitley wrote: > > BTW, what is the timing of the > relocation to Gateway Center??? - - Visit the Utah Astronomy Message Board: http://pub61.ezboard.com/butahastronomy To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. ------------------------------ Date: Wed, 10 Oct 2001 07:52:08 -0700 (PDT) From: Chuck Hards Subject: (utah-astronomy) Auroral monitor: parts sources Here is a list of suitable magnets and first-surface mirrors that will work for the "jam-jar" magnetometer: Mirrors: American Science & Surplus: Stock #66001 3.5x14mm $2.50 Stock #68613 4.6x9.4mm $2.50 Stock #66027 5.5x14mm $2.50 Also check out Surplus Shed, who sometimes offer discounts on quantities of 5 or more. Another alternative is if you have an old, scratched or chipped Newtonian secondary laying around. Wrap it in several layers of tissue paper, then place it in an old sock. Set it on the ground, and smack it with a hammer. Carefully remove the fragments, and select one that approximates the size needed. Take care, the edges will be sharp, and the odd shape may be harder to handle, but you can't beat the price. Remember that you need to use a small mirror to keep the mass of the pendulum down. A heavy magnet/mirror will not be as sensitive or respond as quickly as a less massive combination. Magnets: Lowes has a good selection of Alnico & ceramic magnets, but I suggest a small, rare-earth magnet. American Science & Surplus: Stock #32436 Micromagnet $2/pkg(4) Stock #33317 Rectangular $2 ea. Stock #33316 Tiny magnets $2.50/pkg(2) The "Scientifics" catalog also lists innumerable rare-earth magnets. I also noticed a combination pen/laser pointer (Stock#B31051-00; $6.95) that would make a great light source. www.scientificsonline.com My magnetometer was quiet last night for the two hours I watched it, up until about 10:30. It occurs to me that metal siding on a home may interfere with the magnetometer, sort of a "Faraday's Cage". Chuck __________________________________________________ Do You Yahoo!? Make a great connection at Yahoo! Personals. http://personals.yahoo.com - - Visit the Utah Astronomy Message Board: http://pub61.ezboard.com/butahastronomy To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. ------------------------------ Date: Wed, 10 Oct 2001 09:01:54 -0600 From: Karen Pierce Subject: Re: (utah-astronomy) disturbing development Another organization that sells products from Hansen Publications is Astronomy Society of the Pacific. Web site: http://www.astrosociety.org/ It would be interesting to hear what they have to say. We have seen posters from Hansen Publications in every astronomy-related store. Their posters are one-of-a-kind and will be greatly missed. We have bought hundreds of dollars of material from them in the past for displaying at the various star parties that we go to. We always have posters displayed on the wall during the Solar party held each of the 8 days that we are at the Grand Canyon North Rim Star Party every June. We have organized the North Rim version now for 6 years and see 4000 - 5000 people during those 8 days at the Astronomy Programs we porvide to the public. They are always studied and always provides an opening for interested people to ask great questions. They will be greatly missed and a great service lost. Deloy and Karen Pierce At 08:52 AM 10/9/01 -0600, you wrote: >Friends, I wanted you all to see an article the Deseret News published, >which raises some real concerns. I am perplexed by all this and I'd like to >get know your reaction. Thanks, Joe Bauman > > >Deseret News, Sunday, October 07, 2001 >Planetarium unit closing >Division's quiet demise, lack of input irk official >By Amy Joi Bryson >Deseret News staff writer >One of the most steadfast and internationally known traditions of the >Hansen Planetarium will cease to exist at the end of the year, a victim of >what county officials say are dwindling revenues and a changing market. > >Some, however, are questioning the decision to kill the publications >division, especially in light of its success and the fact that the plug was >pulled so quietly. > - - Visit the Utah Astronomy Message Board: http://pub61.ezboard.com/butahastronomy To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. ------------------------------ Date: 10 Oct 2001 11:18:08 EDT From: William.H.Fenton@Dartmouth.EDU (William H. Fenton) Subject: Re: (utah-astronomy) disturbing development The main staircase here at the Dartmouth College Physics & Astronomy building is lined with Hansen posters. They are appreciated and enjoyed by everyone. - - Visit the Utah Astronomy Message Board: http://pub61.ezboard.com/butahastronomy To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. ------------------------------ Date: Wed, 10 Oct 2001 08:52:49 -0700 (PDT) From: Jim Stitley Subject: Re: (utah-astronomy) disturbing development Karen, Great input - question is how we can use info like this to bring pressure to bare to maybe reverse the publication decision, and maybe find a way to promote them more. Based on all thsi info, does anyone have any idea what the annual revenues were for the publication side of the business??? Is the issue Sales, or Profitability??? Might tell su the 'right' problem to fix in order to restore. Would it help to have amaster list of worldwide customers and organizations that ordered these products? Seems like we might be able to build a case to reverse, like the recent decision to hire someone from U of U to handle 'hardware' sales. Just my thoughts. Jim Stitley - --- Karen Pierce wrote: > Another organization that sells products from Hansen > Publications is > Astronomy Society of the Pacific. Web site: > http://www.astrosociety.org/ > It would be interesting to hear what they have to say. > > We have seen posters from Hansen Publications in every > astronomy-related > store. Their posters are one-of-a-kind and will be > greatly missed. We have > bought hundreds of dollars of material from them in the > past for displaying > at the various star parties that we go to. We always > have posters displayed > on the wall during the Solar party held each of the 8 > days that we are at > the Grand Canyon North Rim Star Party every June. We > have organized the > North Rim version now for 6 years and see 4000 - 5000 > people during those 8 > days at the Astronomy Programs we porvide to the public. > They are always > studied and always provides an opening for interested > people to ask great > questions. > > They will be greatly missed and a great service lost. > > Deloy and Karen Pierce > > At 08:52 AM 10/9/01 -0600, you wrote: > >Friends, I wanted you all to see an article the Deseret > News published, > >which raises some real concerns. I am perplexed by all > this and I'd like to > >get know your reaction. Thanks, Joe Bauman > > > > > >Deseret News, Sunday, October 07, 2001 > >Planetarium unit closing > >Division's quiet demise, lack of input irk official > >By Amy Joi Bryson > >Deseret News staff writer > >One of the most steadfast and internationally known > traditions of the > >Hansen Planetarium will cease to exist at the end of the > year, a victim of > >what county officials say are dwindling revenues and a > changing market. > > > >Some, however, are questioning the decision to kill the > publications > >division, especially in light of its success and the > fact that the plug was > >pulled so quietly. > > > > > - > Visit the Utah Astronomy Message Board: > http://pub61.ezboard.com/butahastronomy > To unsubscribe from utah-astronomy, send an email to > "majordomo@xmission.com" > with "unsubscribe utah-astronomy" in the body of the message. __________________________________________________ Do You Yahoo!? Make a great connection at Yahoo! Personals. http://personals.yahoo.com - - Visit the Utah Astronomy Message Board: http://pub61.ezboard.com/butahastronomy To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. ------------------------------ Date: Wed, 10 Oct 2001 10:02:59 -0700 (PDT) From: Chuck Hards Subject: (utah-astronomy) HP Publications You know, if someone had publishing experience, and a good relationship with a commercial lender, it might be worth their while to make an offer for the planetarium's publications division.... Just a thought. C. __________________________________________________ Do You Yahoo!? Make a great connection at Yahoo! Personals. http://personals.yahoo.com - - Visit the Utah Astronomy Message Board: http://pub61.ezboard.com/butahastronomy To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. ------------------------------ Date: Wed, 10 Oct 2001 11:24:30 -0600 (MDT) From: Daniel Hanks Subject: Re: (utah-astronomy) HP Publications Hmm, interesting idea indeed. I work (indirectly or directly depending on how you look at it) for Primedia, a media giant second only to AOL-Time-Warner. Primedia does a lot of niche/specialty magazines like Seventeen, Modern Bride, the Channel One stuff your kids endure in school each morning, and my favorite, National Hog Farmer. I wonder if the company might have an interest in this? What about companies like Kalmbach publishing, or S & T? Would they be interested in poicking up sometihing like this? - -- Dan Hanks On Wed, 10 Oct 2001, Chuck Hards wrote: > You know, if someone had publishing experience, and a > good relationship with a commercial lender, it might > be worth their while to make an offer for the > planetarium's publications division.... > > Just a thought. > > C. > > > > __________________________________________________ > Do You Yahoo!? > Make a great connection at Yahoo! Personals. > http://personals.yahoo.com > > - > Visit the Utah Astronomy Message Board: > http://pub61.ezboard.com/butahastronomy > To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" > with "unsubscribe utah-astronomy" in the body of the message. > - - Visit the Utah Astronomy Message Board: http://pub61.ezboard.com/butahastronomy To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. ------------------------------ Date: Wed, 10 Oct 2001 10:42:09 -0700 (PDT) From: Jim Stitley Subject: Re: (utah-astronomy) HP Publications Wonder if S&T Sky Publications might have an interest? Or, would that remove too much local editorial control? there must be some Win-Win proposition - at least this is generating interest and discussion; from that might come a 'solution'/opportunity. Jim Stitley - --- Chuck Hards wrote: > You know, if someone had publishing experience, and a > good relationship with a commercial lender, it might > be worth their while to make an offer for the > planetarium's publications division.... > > Just a thought. > > C. > > > > __________________________________________________ > Do You Yahoo!? > Make a great connection at Yahoo! Personals. > http://personals.yahoo.com > > - > Visit the Utah Astronomy Message Board: > http://pub61.ezboard.com/butahastronomy > To unsubscribe from utah-astronomy, send an email to > "majordomo@xmission.com" > with "unsubscribe utah-astronomy" in the body of the message. __________________________________________________ Do You Yahoo!? Make a great connection at Yahoo! Personals. http://personals.yahoo.com - - Visit the Utah Astronomy Message Board: http://pub61.ezboard.com/butahastronomy To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. ------------------------------ Date: Wed, 10 Oct 2001 11:09:41 -0700 (PDT) From: Chuck Hards Subject: Re: (utah-astronomy) HP Publications I think the first step is to send Sky and Kalmbach a press release (Joe, did you send them anything?) They then might make inquiries on their own. Also, what are the assets? Is everything printed in-house, or jobbed out? Real assets may include only office furniture and a computer system, and a handful of copyrights. If there were value there, I'd think the board of directors would favor a sell-out rather than just closing the doors. There is obviously a lot of sentimentality attached to the enterprise, but does it actually make a profit? Chuck - --- Daniel Hanks wrote: > Hmm, interesting idea indeed. I work (indirectly or > directly depending on > how you look at it) for Primedia, a media giant > second only to > AOL-Time-Warner. Primedia does a lot of > niche/specialty magazines like > Seventeen, Modern Bride, the Channel One stuff your > kids endure in school > each morning, and my favorite, National Hog Farmer. > I wonder if the > company might have an interest in this? > > What about companies like Kalmbach publishing, or S > & T? Would they be > interested in poicking up sometihing like this? > > -- Dan Hanks > > On Wed, 10 Oct 2001, Chuck Hards wrote: > > > You know, if someone had publishing experience, > and a > > good relationship with a commercial lender, it > might > > be worth their while to make an offer for the > > planetarium's publications division.... > > > > Just a thought. > > > > C. > > > > > > > > __________________________________________________ > > Do You Yahoo!? > > Make a great connection at Yahoo! Personals. > > http://personals.yahoo.com > > > > - > > Visit the Utah Astronomy Message Board: > > http://pub61.ezboard.com/butahastronomy > > To unsubscribe from utah-astronomy, send an email > to "majordomo@xmission.com" > > with "unsubscribe utah-astronomy" in the body of > the message. > > > > > - > Visit the Utah Astronomy Message Board: > http://pub61.ezboard.com/butahastronomy > To unsubscribe from utah-astronomy, send an email > to "majordomo@xmission.com" > with "unsubscribe utah-astronomy" in the body of > the message. __________________________________________________ Do You Yahoo!? Make a great connection at Yahoo! Personals. http://personals.yahoo.com - - Visit the Utah Astronomy Message Board: http://pub61.ezboard.com/butahastronomy To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. ------------------------------ Date: Wed, 10 Oct 2001 11:11:29 -0700 (PDT) From: Brent Watson Subject: Re: (utah-astronomy) Auroral monitor: parts sources Chuck, A faraday cage is a reference for shielding electrical fields. Most home siding is aluminum, and therefor non-magnetic. It should not interfere with the megnetic fields you are trying to detect. Brent - --- Chuck Hards wrote: > Here is a list of suitable magnets and first-surface > mirrors that will work for the "jam-jar" > magnetometer: > > Mirrors: > > American Science & Surplus: > Stock #66001 3.5x14mm $2.50 > Stock #68613 4.6x9.4mm $2.50 > Stock #66027 5.5x14mm $2.50 > > Also check out Surplus Shed, who sometimes offer > discounts on quantities of 5 or more. > > Another alternative is if you have an old, scratched > or chipped Newtonian secondary laying around. Wrap > it > in several layers of tissue paper, then place it in > an > old sock. Set it on the ground, and smack it with a > hammer. Carefully remove the fragments, and select > one that approximates the size needed. Take care, > the > edges will be sharp, and the odd shape may be harder > to handle, but you can't beat the price. Remember > that you need to use a small mirror to keep the mass > of the pendulum down. A heavy magnet/mirror will > not > be as sensitive or respond as quickly as a less > massive combination. > > Magnets: > > Lowes has a good selection of Alnico & ceramic > magnets, but I suggest a small, rare-earth magnet. > > American Science & Surplus: > > Stock #32436 Micromagnet $2/pkg(4) > Stock #33317 Rectangular $2 ea. > Stock #33316 Tiny magnets $2.50/pkg(2) > > The "Scientifics" catalog also lists innumerable > rare-earth magnets. I also noticed a combination > pen/laser pointer (Stock#B31051-00; $6.95) that > would > make a great light source. > www.scientificsonline.com > > My magnetometer was quiet last night for the two > hours > I watched it, up until about 10:30. > > It occurs to me that metal siding on a home may > interfere with the magnetometer, sort of a > "Faraday's > Cage". > > Chuck > > > __________________________________________________ > Do You Yahoo!? > Make a great connection at Yahoo! Personals. > http://personals.yahoo.com > > - > Visit the Utah Astronomy Message Board: > http://pub61.ezboard.com/butahastronomy > To unsubscribe from utah-astronomy, send an email > to "majordomo@xmission.com" > with "unsubscribe utah-astronomy" in the body of > the message. __________________________________________________ Do You Yahoo!? Make a great connection at Yahoo! Personals. http://personals.yahoo.com - - Visit the Utah Astronomy Message Board: http://pub61.ezboard.com/butahastronomy To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. ------------------------------ Date: Wed, 10 Oct 2001 11:38:15 -0700 (PDT) From: Chuck Hards Subject: Re: (utah-astronomy) Auroral monitor: parts sources Thanks, Brent. Do you think a basement installation would be less sensitive than say, an upper-story location? BTW, in that same issue of S & T (10-89), our own Patrick Wiggins had a photo published in the back section of the magazine. Chuck - --- Brent Watson wrote: > Chuck, > > A faraday cage is a reference for shielding > electrical > fields. Most home siding is aluminum, and therefor > non-magnetic. It should not interfere with the > megnetic fields you are trying to detect. > > Brent > > --- Chuck Hards wrote: > > Here is a list of suitable magnets and > first-surface > > mirrors that will work for the "jam-jar" > > magnetometer: > > > > Mirrors: > > > > American Science & Surplus: > > Stock #66001 3.5x14mm $2.50 > > Stock #68613 4.6x9.4mm $2.50 > > Stock #66027 5.5x14mm $2.50 > > > > Also check out Surplus Shed, who sometimes offer > > discounts on quantities of 5 or more. > > > > Another alternative is if you have an old, > scratched > > or chipped Newtonian secondary laying around. > Wrap > > it > > in several layers of tissue paper, then place it > in > > an > > old sock. Set it on the ground, and smack it with > a > > hammer. Carefully remove the fragments, and > select > > one that approximates the size needed. Take care, > > the > > edges will be sharp, and the odd shape may be > harder > > to handle, but you can't beat the price. Remember > > that you need to use a small mirror to keep the > mass > > of the pendulum down. A heavy magnet/mirror will > > not > > be as sensitive or respond as quickly as a less > > massive combination. > > > > Magnets: > > > > Lowes has a good selection of Alnico & ceramic > > magnets, but I suggest a small, rare-earth magnet. > > > > American Science & Surplus: > > > > Stock #32436 Micromagnet $2/pkg(4) > > Stock #33317 Rectangular $2 ea. > > Stock #33316 Tiny magnets $2.50/pkg(2) > > > > The "Scientifics" catalog also lists innumerable > > rare-earth magnets. I also noticed a combination > > pen/laser pointer (Stock#B31051-00; $6.95) that > > would > > make a great light source. > > www.scientificsonline.com > > > > My magnetometer was quiet last night for the two > > hours > > I watched it, up until about 10:30. > > > > It occurs to me that metal siding on a home may > > interfere with the magnetometer, sort of a > > "Faraday's > > Cage". > > > > Chuck > > > > > > __________________________________________________ > > Do You Yahoo!? > > Make a great connection at Yahoo! Personals. > > http://personals.yahoo.com > > > > - > > Visit the Utah Astronomy Message Board: > > http://pub61.ezboard.com/butahastronomy > > To unsubscribe from utah-astronomy, send an email > > to "majordomo@xmission.com" > > with "unsubscribe utah-astronomy" in the body of > > the message. > > > __________________________________________________ > Do You Yahoo!? > Make a great connection at Yahoo! Personals. > http://personals.yahoo.com > > - > Visit the Utah Astronomy Message Board: > http://pub61.ezboard.com/butahastronomy > To unsubscribe from utah-astronomy, send an email > to "majordomo@xmission.com" > with "unsubscribe utah-astronomy" in the body of > the message. __________________________________________________ Do You Yahoo!? Make a great connection at Yahoo! Personals. http://personals.yahoo.com - - Visit the Utah Astronomy Message Board: http://pub61.ezboard.com/butahastronomy To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. ------------------------------ Date: Wed, 10 Oct 2001 11:39:26 -0700 (PDT) From: Richard Tenney Subject: Re: (utah-astronomy) Auroral monitor: parts sources Another good source of small, very powerful magnets is out of old computer hard disk drives. Ask your I.S. department where you work (assuming your company has an I.S. dept.; seems most do these days) if they have any bad or damaged hard drives they plan to throw away and you can easily salvage some good magnets out of them (you'll probably need a set of small torx wrenches to open them up). I've collected dozens of great magnets that way. The really old drives have big, strong magnets in them that are also excellent for pinning your kid's artwork to the fridge :-) - -Rich - --- Chuck Hards wrote: > Here is a list of suitable magnets and first-surface > mirrors that will work for the "jam-jar" > magnetometer: > > Mirrors: > > American Science & Surplus: > Stock #66001 3.5x14mm $2.50 > Stock #68613 4.6x9.4mm $2.50 > Stock #66027 5.5x14mm $2.50 > > Also check out Surplus Shed, who sometimes offer > discounts on quantities of 5 or more. > > Another alternative is if you have an old, scratched > or chipped Newtonian secondary laying around. Wrap > it > in several layers of tissue paper, then place it in > an > old sock. Set it on the ground, and smack it with a > hammer. Carefully remove the fragments, and select > one that approximates the size needed. Take care, > the > edges will be sharp, and the odd shape may be harder > to handle, but you can't beat the price. Remember > that you need to use a small mirror to keep the mass > of the pendulum down. A heavy magnet/mirror will > not > be as sensitive or respond as quickly as a less > massive combination. > > Magnets: > > Lowes has a good selection of Alnico & ceramic > magnets, but I suggest a small, rare-earth magnet. > > American Science & Surplus: > > Stock #32436 Micromagnet $2/pkg(4) > Stock #33317 Rectangular $2 ea. > Stock #33316 Tiny magnets $2.50/pkg(2) > > The "Scientifics" catalog also lists innumerable > rare-earth magnets. I also noticed a combination > pen/laser pointer (Stock#B31051-00; $6.95) that > would > make a great light source. > www.scientificsonline.com > > My magnetometer was quiet last night for the two > hours > I watched it, up until about 10:30. > > It occurs to me that metal siding on a home may > interfere with the magnetometer, sort of a > "Faraday's > Cage". > > Chuck > > > __________________________________________________ > Do You Yahoo!? > Make a great connection at Yahoo! Personals. > http://personals.yahoo.com > > - > Visit the Utah Astronomy Message Board: > http://pub61.ezboard.com/butahastronomy > To unsubscribe from utah-astronomy, send an email > to "majordomo@xmission.com" > with "unsubscribe utah-astronomy" in the body of > the message. > > > ________________ > Email Forwarding Service Brought To You By: > http://www.bn3.com. > We can let you become anybody@anyplace.com. FREE, In > 5 minutes! __________________________________________________ Do You Yahoo!? Make a great connection at Yahoo! Personals. http://personals.yahoo.com - - Visit the Utah Astronomy Message Board: http://pub61.ezboard.com/butahastronomy To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. ------------------------------ Date: Wed, 10 Oct 2001 13:37:35 -0600 (MDT) From: Daniel Hanks Subject: Re: (utah-astronomy) HP Publications From what the numbers indicated that were given earlier, it seemed profits had been dropping for the past few years. Depending on what a company interested in purchase was looking for, that could be either good or bad. - -- Dan On Wed, 10 Oct 2001, Chuck Hards wrote: > I think the first step is to send Sky and Kalmbach a > press release (Joe, did you send them anything?) > They then might make inquiries on their own. > > Also, what are the assets? Is everything printed > in-house, or jobbed out? Real assets may include only > office furniture and a computer system, and a handful > of copyrights. > > If there were value there, I'd think the board of > directors would favor a sell-out rather than just > closing the doors. > > There is obviously a lot of sentimentality attached to > the enterprise, but does it actually make a profit? > > Chuck > > --- Daniel Hanks wrote: > > Hmm, interesting idea indeed. I work (indirectly or > > directly depending on > > how you look at it) for Primedia, a media giant > > second only to > > AOL-Time-Warner. Primedia does a lot of > > niche/specialty magazines like > > Seventeen, Modern Bride, the Channel One stuff your > > kids endure in school > > each morning, and my favorite, National Hog Farmer. > > I wonder if the > > company might have an interest in this? > > > > What about companies like Kalmbach publishing, or S > > & T? Would they be > > interested in poicking up sometihing like this? > > > > -- Dan Hanks > > > > On Wed, 10 Oct 2001, Chuck Hards wrote: > > > > > You know, if someone had publishing experience, > > and a > > > good relationship with a commercial lender, it > > might > > > be worth their while to make an offer for the > > > planetarium's publications division.... > > > > > > Just a thought. > > > > > > C. > > > > > > > > > > > > __________________________________________________ > > > Do You Yahoo!? > > > Make a great connection at Yahoo! Personals. > > > http://personals.yahoo.com > > > > > > - > > > Visit the Utah Astronomy Message Board: > > > http://pub61.ezboard.com/butahastronomy > > > To unsubscribe from utah-astronomy, send an email > > to "majordomo@xmission.com" > > > with "unsubscribe utah-astronomy" in the body of > > the message. > > > > > > > > > - > > Visit the Utah Astronomy Message Board: > > http://pub61.ezboard.com/butahastronomy > > To unsubscribe from utah-astronomy, send an email > > to "majordomo@xmission.com" > > with "unsubscribe utah-astronomy" in the body of > > the message. > > > __________________________________________________ > Do You Yahoo!? > Make a great connection at Yahoo! Personals. > http://personals.yahoo.com > > - > Visit the Utah Astronomy Message Board: > http://pub61.ezboard.com/butahastronomy > To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" > with "unsubscribe utah-astronomy" in the body of the message. > - - Visit the Utah Astronomy Message Board: http://pub61.ezboard.com/butahastronomy To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. ------------------------------ Date: Wed, 10 Oct 2001 13:39:37 -0600 (MDT) From: Daniel Hanks Subject: Re: (utah-astronomy) Auroral monitor: parts sources Just watch your fingers when you play with these - they're surprisingly strong! - -- Dan On Wed, 10 Oct 2001, Richard Tenney wrote: > Another good source of small, very powerful magnets is > out of old computer hard disk drives. Ask your I.S. > department where you work (assuming your company has > an I.S. dept.; seems most do these days) if they have > any bad or damaged hard drives they plan to throw away > and you can easily salvage some good magnets out of > them (you'll probably need a set of small torx > wrenches to open them up). I've collected dozens of > great magnets that way. The really old drives have > big, strong magnets in them that are also excellent > for pinning your kid's artwork to the fridge :-) > > -Rich > > --- Chuck Hards wrote: > > Here is a list of suitable magnets and first-surface > > mirrors that will work for the "jam-jar" > > magnetometer: > > > > Mirrors: > > > > American Science & Surplus: > > Stock #66001 3.5x14mm $2.50 > > Stock #68613 4.6x9.4mm $2.50 > > Stock #66027 5.5x14mm $2.50 > > > > Also check out Surplus Shed, who sometimes offer > > discounts on quantities of 5 or more. > > > > Another alternative is if you have an old, scratched > > or chipped Newtonian secondary laying around. Wrap > > it > > in several layers of tissue paper, then place it in > > an > > old sock. Set it on the ground, and smack it with a > > hammer. Carefully remove the fragments, and select > > one that approximates the size needed. Take care, > > the > > edges will be sharp, and the odd shape may be harder > > to handle, but you can't beat the price. Remember > > that you need to use a small mirror to keep the mass > > of the pendulum down. A heavy magnet/mirror will > > not > > be as sensitive or respond as quickly as a less > > massive combination. > > > > Magnets: > > > > Lowes has a good selection of Alnico & ceramic > > magnets, but I suggest a small, rare-earth magnet. > > > > American Science & Surplus: > > > > Stock #32436 Micromagnet $2/pkg(4) > > Stock #33317 Rectangular $2 ea. > > Stock #33316 Tiny magnets $2.50/pkg(2) > > > > The "Scientifics" catalog also lists innumerable > > rare-earth magnets. I also noticed a combination > > pen/laser pointer (Stock#B31051-00; $6.95) that > > would > > make a great light source. > > www.scientificsonline.com > > > > My magnetometer was quiet last night for the two > > hours > > I watched it, up until about 10:30. > > > > It occurs to me that metal siding on a home may > > interfere with the magnetometer, sort of a > > "Faraday's > > Cage". > > > > Chuck > > > > > > __________________________________________________ > > Do You Yahoo!? > > Make a great connection at Yahoo! Personals. > > http://personals.yahoo.com > > > > - > > Visit the Utah Astronomy Message Board: > > http://pub61.ezboard.com/butahastronomy > > To unsubscribe from utah-astronomy, send an email > > to "majordomo@xmission.com" > > with "unsubscribe utah-astronomy" in the body of > > the message. > > > > > > ________________ > > Email Forwarding Service Brought To You By: > > http://www.bn3.com. > > We can let you become anybody@anyplace.com. FREE, In > > 5 minutes! > > > __________________________________________________ > Do You Yahoo!? > Make a great connection at Yahoo! Personals. > http://personals.yahoo.com > > - > Visit the Utah Astronomy Message Board: > http://pub61.ezboard.com/butahastronomy > To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" > with "unsubscribe utah-astronomy" in the body of the message. > - - Visit the Utah Astronomy Message Board: http://pub61.ezboard.com/butahastronomy To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. ------------------------------ Date: Wed, 10 Oct 2001 12:45:25 -0700 (PDT) From: Brent Watson Subject: Re: (utah-astronomy) Auroral monitor: parts sources Chuck, The magnetic field of the earth is present in the ground, under water, and in the air. I see no reason whyyou could not place the magnetometer almost anywhere, except in a mu metal case. That is the equivalent of a faraday cage for electric fields. Placing the device near magnetic materials should change the rest position of the magnet, but it should still pick up changes. I would not be too worried about furnaces, etc. You can always calibrate out the changes caused by fans, etc. Brent - --- Chuck Hards wrote: > Thanks, Brent. > > Do you think a basement installation would be less > sensitive than say, an upper-story location? > > BTW, in that same issue of S & T (10-89), our own > Patrick Wiggins had a photo published in the back > section of the magazine. > > Chuck > > > --- Brent Watson wrote: > > Chuck, > > > > A faraday cage is a reference for shielding > > electrical > > fields. Most home siding is aluminum, and > therefor > > non-magnetic. It should not interfere with the > > megnetic fields you are trying to detect. > > > > Brent > > > > --- Chuck Hards wrote: > > > Here is a list of suitable magnets and > > first-surface > > > mirrors that will work for the "jam-jar" > > > magnetometer: > > > > > > Mirrors: > > > > > > American Science & Surplus: > > > Stock #66001 3.5x14mm $2.50 > > > Stock #68613 4.6x9.4mm $2.50 > > > Stock #66027 5.5x14mm $2.50 > > > > > > Also check out Surplus Shed, who sometimes offer > > > discounts on quantities of 5 or more. > > > > > > Another alternative is if you have an old, > > scratched > > > or chipped Newtonian secondary laying around. > > Wrap > > > it > > > in several layers of tissue paper, then place it > > in > > > an > > > old sock. Set it on the ground, and smack it > with > > a > > > hammer. Carefully remove the fragments, and > > select > > > one that approximates the size needed. Take > care, > > > the > > > edges will be sharp, and the odd shape may be > > harder > > > to handle, but you can't beat the price. > Remember > > > that you need to use a small mirror to keep the > > mass > > > of the pendulum down. A heavy magnet/mirror > will > > > not > > > be as sensitive or respond as quickly as a less > > > massive combination. > > > > > > Magnets: > > > > > > Lowes has a good selection of Alnico & ceramic > > > magnets, but I suggest a small, rare-earth > magnet. > > > > > > American Science & Surplus: > > > > > > Stock #32436 Micromagnet $2/pkg(4) > > > Stock #33317 Rectangular $2 ea. > > > Stock #33316 Tiny magnets $2.50/pkg(2) > > > > > > The "Scientifics" catalog also lists innumerable > > > rare-earth magnets. I also noticed a > combination > > > pen/laser pointer (Stock#B31051-00; $6.95) that > > > would > > > make a great light source. > > > www.scientificsonline.com > > > > > > My magnetometer was quiet last night for the two > > > hours > > > I watched it, up until about 10:30. > > > > > > It occurs to me that metal siding on a home may > > > interfere with the magnetometer, sort of a > > > "Faraday's > > > Cage". > > > > > > Chuck > > > > > > > > > > __________________________________________________ > > > Do You Yahoo!? > > > Make a great connection at Yahoo! Personals. > > > http://personals.yahoo.com > > > > > > - > > > Visit the Utah Astronomy Message Board: > > > http://pub61.ezboard.com/butahastronomy > > > To unsubscribe from utah-astronomy, send an > email > > > to "majordomo@xmission.com" > > > with "unsubscribe utah-astronomy" in the body > of > > > the message. > > > > > > __________________________________________________ > > Do You Yahoo!? > > Make a great connection at Yahoo! Personals. > > http://personals.yahoo.com > > > > - > > Visit the Utah Astronomy Message Board: > > http://pub61.ezboard.com/butahastronomy > > To unsubscribe from utah-astronomy, send an email > > to "majordomo@xmission.com" > > with "unsubscribe utah-astronomy" in the body of > > the message. > > > __________________________________________________ > Do You Yahoo!? > Make a great connection at Yahoo! Personals. > http://personals.yahoo.com > > - > Visit the Utah Astronomy Message Board: > http://pub61.ezboard.com/butahastronomy > To unsubscribe from utah-astronomy, send an email > to "majordomo@xmission.com" > with "unsubscribe utah-astronomy" in the body of > the message. __________________________________________________ Do You Yahoo!? Make a great connection at Yahoo! Personals. http://personals.yahoo.com - - Visit the Utah Astronomy Message Board: http://pub61.ezboard.com/butahastronomy To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. ------------------------------ Date: Wed, 10 Oct 2001 12:58:38 -0700 (PDT) From: Chuck Hards Subject: Re: (utah-astronomy) Auroral monitor: parts sources Agreed. I love small, strong magnets. Forget the artwork, pin the kids to the fridge! Walking fifteen feet away from my magnetometer with a tiny S-C magnet in my hand, the mirror slowly pivoted to follow me! C. - --- Daniel Hanks wrote: > Just watch your fingers when you play with these - > they're surprisingly > strong! > > -- Dan > > On Wed, 10 Oct 2001, Richard Tenney wrote: > > > Another good source of small, very powerful > magnets is > > out of old computer hard disk drives. Ask your > I.S. > > department where you work (assuming your company > has > > an I.S. dept.; seems most do these days) if they > have > > any bad or damaged hard drives they plan to throw > away > > and you can easily salvage some good magnets out > of > > them (you'll probably need a set of small torx > > wrenches to open them up). I've collected dozens > of > > great magnets that way. The really old drives > have > > big, strong magnets in them that are also > excellent > > for pinning your kid's artwork to the fridge :-) > > > > -Rich > > > > --- Chuck Hards wrote: > > > Here is a list of suitable magnets and > first-surface > > > mirrors that will work for the "jam-jar" > > > magnetometer: > > > > > > Mirrors: > > > > > > American Science & Surplus: > > > Stock #66001 3.5x14mm $2.50 > > > Stock #68613 4.6x9.4mm $2.50 > > > Stock #66027 5.5x14mm $2.50 > > > > > > Also check out Surplus Shed, who sometimes offer > > > discounts on quantities of 5 or more. > > > > > > Another alternative is if you have an old, > scratched > > > or chipped Newtonian secondary laying around. > Wrap > > > it > > > in several layers of tissue paper, then place it > in > > > an > > > old sock. Set it on the ground, and smack it > with a > > > hammer. Carefully remove the fragments, and > select > > > one that approximates the size needed. Take > care, > > > the > > > edges will be sharp, and the odd shape may be > harder > > > to handle, but you can't beat the price. > Remember > > > that you need to use a small mirror to keep the > mass > > > of the pendulum down. A heavy magnet/mirror > will > > > not > > > be as sensitive or respond as quickly as a less > > > massive combination. > > > > > > Magnets: > > > > > > Lowes has a good selection of Alnico & ceramic > > > magnets, but I suggest a small, rare-earth > magnet. > > > > > > American Science & Surplus: > > > > > > Stock #32436 Micromagnet $2/pkg(4) > > > Stock #33317 Rectangular $2 ea. > > > Stock #33316 Tiny magnets $2.50/pkg(2) > > > > > > The "Scientifics" catalog also lists innumerable > > > rare-earth magnets. I also noticed a > combination > > > pen/laser pointer (Stock#B31051-00; $6.95) that > > > would > > > make a great light source. > > > www.scientificsonline.com > > > > > > My magnetometer was quiet last night for the two > > > hours > > > I watched it, up until about 10:30. > > > > > > It occurs to me that metal siding on a home may > > > interfere with the magnetometer, sort of a > > > "Faraday's > > > Cage". > > > > > > Chuck > > > > > > > > > > __________________________________________________ > > > Do You Yahoo!? > > > Make a great connection at Yahoo! Personals. > > > http://personals.yahoo.com > > > > > > - > > > Visit the Utah Astronomy Message Board: > > > http://pub61.ezboard.com/butahastronomy > > > To unsubscribe from utah-astronomy, send an > email > > > to "majordomo@xmission.com" > > > with "unsubscribe utah-astronomy" in the body > of > > > the message. > > > > > > > > > ________________ > > > Email Forwarding Service Brought To You By: > > > http://www.bn3.com. > > > We can let you become anybody@anyplace.com. > FREE, In > > > 5 minutes! > > > > > > __________________________________________________ > > Do You Yahoo!? > > Make a great connection at Yahoo! Personals. > > http://personals.yahoo.com > > > > - > > Visit the Utah Astronomy Message Board: > > http://pub61.ezboard.com/butahastronomy > > To unsubscribe from utah-astronomy, send an email > to "majordomo@xmission.com" > > with "unsubscribe utah-astronomy" in the body of > the message. > > > > > - > Visit the Utah Astronomy Message Board: > http://pub61.ezboard.com/butahastronomy > To unsubscribe from utah-astronomy, send an email > to "majordomo@xmission.com" > with "unsubscribe utah-astronomy" in the body of > the message. __________________________________________________ Do You Yahoo!? Make a great connection at Yahoo! Personals. http://personals.yahoo.com - - Visit the Utah Astronomy Message Board: http://pub61.ezboard.com/butahastronomy To unsubscribe from utah-astronomy, send an email to "majordomo@xmission.com" with "unsubscribe utah-astronomy" in the body of the message. ------------------------------ End of utah-astronomy-digest V1 #62 *********************************** - To unsubscribe to $LIST, send an email to "majordomo@xmission.com" with "unsubscribe $LIST" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.