http://tech.groups.yahoo.com/group/tmboptical/ A place for TMB telescope owners and adm Wed, 20 Jan 2010 06:48:26 GMT Terry Tuggle http://tech.groups.yahoo.com/group/tmboptical/message/36634 http://tech.groups.yahoo.com/group/tmboptical/message/36634 Eric, Nice review! All the best, Terry _____ From: tmboptical@yahoogroups.com [mailto:tmboptical@yahoogroups.com] On Behalf Of Eric Jamison Sent: Sunday, Wed, 20 Jan 2010 06:47:49 GMT Terry Tuggle http://tech.groups.yahoo.com/group/tmboptical/message/36633 http://tech.groups.yahoo.com/group/tmboptical/message/36633 Peter, You will have to ask them that specifically, It does not say anything on the website about flattening. Again about the AO8, it is not needed at all for Wed, 20 Jan 2010 06:02:38 GMT Eric Jamison http://tech.groups.yahoo.com/group/tmboptical/message/36632 http://tech.groups.yahoo.com/group/tmboptical/message/36632 Test... [Non-text portions of this message have been removed] Wed, 20 Jan 2010 06:02:33 GMT Eric Jamison http://tech.groups.yahoo.com/group/tmboptical/message/36631 http://tech.groups.yahoo.com/group/tmboptical/message/36631 Hi Gene, I have tried Ethos eyepeices and was all set to buy a Ethos 17mm when the January 2010 issue of S&T arrived and it showed the TMB 100 16mm and 9mm. So Wed, 20 Jan 2010 06:00:28 GMT ej1847 http://tech.groups.yahoo.com/group/tmboptical/message/36630 http://tech.groups.yahoo.com/group/tmboptical/message/36630 Test Wed, 20 Jan 2010 05:59:53 GMT Eric Jamison http://tech.groups.yahoo.com/group/tmboptical/message/36629 http://tech.groups.yahoo.com/group/tmboptical/message/36629 Hi Dietmar and Immo, Thanks for posting a link to your new website. You have some really fine images there. Best and Happy New Year as well! Eric ... From: Wed, 20 Jan 2010 05:59:25 GMT D Baker http://tech.groups.yahoo.com/group/tmboptical/message/36628 http://tech.groups.yahoo.com/group/tmboptical/message/36628 The nice thing about the Astrophysics 0.75x reducer/corrector is that it is designed to do its job over a field larger than an APS-sized sensor, and the optics Wed, 20 Jan 2010 05:58:17 GMT peter@... http://tech.groups.yahoo.com/group/tmboptical/message/36627 http://tech.groups.yahoo.com/group/tmboptical/message/36627 Terry Thanks for that advice. It looks as if reducing, with the 100/800 and my CCD is not a good idea. That neatly fits with SBig's advice regarding use of Wed, 20 Jan 2010 05:47:50 GMT Terry Tuggle http://tech.groups.yahoo.com/group/tmboptical/message/36626 http://tech.groups.yahoo.com/group/tmboptical/message/36626 Hey Guys, Check out this movie on today's APOD...so cool! http://antwrp.gsfc.nasa.gov/apod/astropix.html All the best, Terry [Non-text portions of this message Mon, 18 Jan 2010 21:48:15 GMT Terry Tuggle http://tech.groups.yahoo.com/group/tmboptical/message/36625 http://tech.groups.yahoo.com/group/tmboptical/message/36625 Hello everyone, The past few days there has been a lively debate going on from the SBIG group discussing object S/N of faint DSO's versus aperture and F-ratio. Sun, 03 Jan 2010 11:44:37 GMT Terry Tuggle http://tech.groups.yahoo.com/group/tmboptical/message/36624 http://tech.groups.yahoo.com/group/tmboptical/message/36624 Peter, One thing I did not mention is about pixel size; 800mm is the ?Sweet Spot? for cameras for 9 micron pixels for best detail. So it really depends on Sun, 03 Jan 2010 11:26:58 GMT Terry Tuggle http://tech.groups.yahoo.com/group/tmboptical/message/36623 http://tech.groups.yahoo.com/group/tmboptical/message/36623 Hi Peter, I know most people had success with the TV reducers for the 80mm scopes. The new NPR 1073 looks to be a better choice for the 100/800 for larger Sun, 03 Jan 2010 05:15:05 GMT peter@... http://tech.groups.yahoo.com/group/tmboptical/message/36622 http://tech.groups.yahoo.com/group/tmboptical/message/36622 I'd just like to acknowledge how helpful Markus at APM has been. My TMB 100/800, bought 2nd hand, came missing the very special screws needed to attach the Sun, 03 Jan 2010 05:15:01 GMT Terry http://tech.groups.yahoo.com/group/tmboptical/message/36621 http://tech.groups.yahoo.com/group/tmboptical/message/36621 Merry Christmas Friends I just created a video clip of my latest stuff using the QHY8 using my TMB 130SS and TMB80SS, you can view it on youtube here: Sun, 03 Jan 2010 05:14:55 GMT Robert http://tech.groups.yahoo.com/group/tmboptical/message/36620 http://tech.groups.yahoo.com/group/tmboptical/message/36620 That's absolutely stunning Jim! Simply magnificent! Thanks for posting this.