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atm_free · Amateur Telescope Making

Group Information

  • Members: 1282
  • Category: Telescopes
  • Founded: Jun 1, 2002
  • Language: English
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Description

This Group is for the FREE exchange of ideas related to Amateur Telescope Making (ATM).

Have fun, be kind, play fair, learn, teach, participate.

PHOTO... Here's a contributed photo of a homemade 22 inch tube (before painting) for an Astrograph built by Dave Tandy. The full size photo can be viewed by ATM_FREE members in the "Photos" section. Check out the ATM_FREE Group's discussion for more info on this project and other things we are doing.

Ken Hunter

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Re: Alternative Glass Substrate from Canada
Thanks Art.  Just awaiting info from the supplier list by Dennis.  If you know of any other suplier, please let me know.   Phill On Feb 9, 2010,
Posted - Tue Feb 9, 2010 10:24 pm
calvin65@...
bigdob20
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Re: Alternative Glass Substrate from Canada
Phil if I have my chronology correct, the current manufacturer of BAC should not be painted with the negative reputation that the early substrates generated.
Posted - Tue Feb 9, 2010 8:01 pm
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artbianconi...
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Re: Alternative Glass Substrate from Canada
Thanks Dennis.  Sent an e-mail.  Hope he is making blanks.  Will need further info from him.  Any good or bad feedback about this supplyier would be
Posted - Tue Feb 9, 2010 2:22 am
calvin65@...
bigdob20
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Re: SoundStepper
Certainly it works! But You will need to modify the amplifier/current controller circuit. The output voltage swing of PCM2707 (for example) is 0.5Vp-p, while
Posted - Mon Feb 8, 2010 10:36 pm
Maciel Bassani Sparre...
macielbs
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Re: from another group
I am not moving; everything else is! ... -- NOT sent from that galldurned iPhone with its crippled bluetooth and authoritarian restrictions.
Posted - Mon Feb 8, 2010 8:46 pm
Richard Schwartz
richard1941@...
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Message History

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2010 180 65
2009 86 282 288 223 222 71 119 141 55 241 158 312
2008 153 124 150 117 47 273 170 77 58 114 99 65
2007 144 177 110 111 66 23 80 99 87 50 96 110
2006 131 307 134 228 500 108 315 129 216 165 213 209
2005 339 369 319 91 234 460 136 153 168 57 292 107
2004 167 150 134 120 84 96 48 55 114 158 305 374
2003 96 103 135 158 179 93 84 158 168 178 284 160
2002 252 209 313 184 198 113 141
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