http://tech.groups.yahoo.com/group/astrotrac/ AstroTrac Tue, 03 Nov 2009 03:56:30 GMT H P http://tech.groups.yahoo.com/group/astrotrac/message/2225 http://tech.groups.yahoo.com/group/astrotrac/message/2225 There are several possibilities for mounting imaging setups on the AT. 1. Ball heads (I like the M490RC4 Maxi better than the M410 geared) 2. Geared heads Sun, 01 Nov 2009 18:23:52 GMT orink@... http://tech.groups.yahoo.com/group/astrotrac/message/2224 http://tech.groups.yahoo.com/group/astrotrac/message/2224 Hi, Carl: I just saw your note and wanted to give you a kindred spirit reply. Unfortunately, my Stellarvue 90 is still being mailed, but I hope to get it Sun, 01 Nov 2009 17:50:55 GMT carl_kwadrat http://tech.groups.yahoo.com/group/astrotrac/message/2223 http://tech.groups.yahoo.com/group/astrotrac/message/2223 I have a Stellarvue SV80ST APO refractor with a Stellarvue M1 Alt/Az mount head that I am considering using with the Astrotrac TT320X and its TW3100 wedge. I Sun, 01 Nov 2009 12:56:55 GMT http://tech.groups.yahoo.com/group/astrotrac/message/2222 http://tech.groups.yahoo.com/group/astrotrac/message/2222 Some simple rules for the AstroTrac Yahoo Group: 1) All equipment problems and warranty issues must be directed to support@... where they will be Sat, 31 Oct 2009 22:42:14 GMT cer01ca http://tech.groups.yahoo.com/group/astrotrac/message/2221 http://tech.groups.yahoo.com/group/astrotrac/message/2221 Made up a combo supply for a friend to do some testing,,for those do it yourselfers,,the same PC board was used in the photos http://chasr.zenfolio.com ,, just Mon, 26 Oct 2009 10:44:24 GMT cer01ca http://tech.groups.yahoo.com/group/astrotrac/message/2220 http://tech.groups.yahoo.com/group/astrotrac/message/2220 http://ChasR.zenfolio.com My other web page was giving me problems so I switched over to Zenfolio,,it works much better,,have to get to learn it better. Chas Sat, 24 Oct 2009 01:14:07 GMT cer01ca http://tech.groups.yahoo.com/group/astrotrac/message/2219 http://tech.groups.yahoo.com/group/astrotrac/message/2219 Have lots of time on my hands so thought I'd do a nicer job on my camera power supply..I know it's a bit over kill but for those interested in doing their own Fri, 23 Oct 2009 23:56:02 GMT H P http://tech.groups.yahoo.com/group/astrotrac/message/2218 http://tech.groups.yahoo.com/group/astrotrac/message/2218 Hey to all, Like many of you, my sub exposures run 1-4 minutes, generally, using a DSLR/lens/or scope on the AT. However, I use the histogram on the camera to Fri, 23 Oct 2009 19:29:59 GMT parkmalcolm http://tech.groups.yahoo.com/group/astrotrac/message/2217 http://tech.groups.yahoo.com/group/astrotrac/message/2217 1) If you put a camra on a tripod (no astrotrac) and point it at polaris, and take a 30 minute exposure, the earth rotates in the field of view around polaris. Thu, 22 Oct 2009 23:45:22 GMT bigdipperuk02 http://tech.groups.yahoo.com/group/astrotrac/message/2216 http://tech.groups.yahoo.com/group/astrotrac/message/2216 ... Peter, just been looking at your site and there are some very impressive images on there. Thanks for the link. I also tend to do exposures from around 3~5 Thu, 22 Oct 2009 14:47:14 GMT peter@... http://tech.groups.yahoo.com/group/astrotrac/message/2215 http://tech.groups.yahoo.com/group/astrotrac/message/2215 Roland, I'm not sure what the periodic error is on my AT but with the the 200mm telephoto I'm at around 7" per pixel so the drive is not the primary concern Thu, 22 Oct 2009 02:03:04 GMT Roland Roberts http://tech.groups.yahoo.com/group/astrotrac/message/2214 http://tech.groups.yahoo.com/group/astrotrac/message/2214 ... Okay, English is my first language even if you can't tell from that first sentence :-/ What I meant to write was... According to Richard, the specs on the Wed, 21 Oct 2009 21:10:03 GMT Roland Roberts http://tech.groups.yahoo.com/group/astrotrac/message/2213 http://tech.groups.yahoo.com/group/astrotrac/message/2213 ... According to Richard, the specs on the AstroTrac are say periodic error is 5" in 5 minutes. With my Canon 350D and Borg 45ED, I'm at 5"/pixel. So I found Wed, 21 Oct 2009 19:44:51 GMT ytoropin http://tech.groups.yahoo.com/group/astrotrac/message/2212 http://tech.groups.yahoo.com/group/astrotrac/message/2212 Rainer, Curtis, Thanks a lot for your kind feedback! And, Rainer, you're right, cooled astroCCD makes a lot of difference after DSLR, mainly due to Wed, 21 Oct 2009 15:28:08 GMT peter http://tech.groups.yahoo.com/group/astrotrac/message/2211 http://tech.groups.yahoo.com/group/astrotrac/message/2211 Andy, Interesting trial exposures. I shoot with a 200mm telephoto on the Astrotrac and limit my exposures to 4 minutes because I find that is the maximum I can