michael.h.f.wilkinson Posted October 9, 2012 Share Posted October 9, 2012 Hi Qualia, at f10 that must be challenging to fit too much of it in the fov, what ep do you use and what is your focal length?The difference in surface brightness is huge. Jupiter is -2.9 max, size of 50 arc seconds max. Andromeda mag 3.5 ish (IIRC), size around 190 x 60 arc minutes.StuMy 8" F10 fits 1.34 deg of sky at its widest, and I can get the central region, and both M110 and M32 in one FOV (just!). A 4" F/10 with a Celestron X-Cel LX 25mm you should get 1.5 deg at 40x (with the 60 deg FOV of the X-Cel-LX, a 68 deg EP would get 1.7 deg true FOV). With an Aero 40mm you should be able to get 2.72 deg at 25x. Getting 2" EPs REALLY helps. Link to comment Share on other sites More sharing options...
allcart Posted October 10, 2012 Share Posted October 10, 2012 Well here is what I got. 10 subs + darks at 200mm, iso 400, f/5.6I'm reasonably pleased, but I know I can do better. I made a mistake with the aperture, it should have been f/3.2 Link to comment Share on other sites More sharing options...
Hawkeye Posted October 10, 2012 Share Posted October 10, 2012 Hi Allcart,What exposure times were your lights?CheersPaul Link to comment Share on other sites More sharing options...
Mike73 Posted October 10, 2012 Share Posted October 10, 2012 I can just fit M31/M32 and M110 all in the same FoV with my scope. Link to comment Share on other sites More sharing options...
allcart Posted October 10, 2012 Share Posted October 10, 2012 Hi Paul, the lights and darks were 120 secs each. I think I registered about 16 of each, but then only chose the ten lights with the highest score. The stars were not pin sharp, probably due to periodic errors in the tracking or not perfect PA, but they turned out ok when stacked.i actually took 25 at 120secs and 25 at 90secs, but The 120's produced a better picture. I wish I had set the right aperture as it may have been better.It took me a few days to get to this pic as my astro pp is not up to speed yet, but after reading a few other topics in the imaging forums etc, I gathered enough info to help me process it this far. There may be more data to be extracted by more capable folks on herem but this is the best I could do for the moment. Link to comment Share on other sites More sharing options...
Hawkeye Posted October 10, 2012 Share Posted October 10, 2012 It took me a few days to get to this pic as my astro pp is not up to speed yetA big Ditto here!!!, A great photo though and I would be very pleased with that myself..Well DoneCheersPaul Link to comment Share on other sites More sharing options...
Moonshane Posted October 10, 2012 Share Posted October 10, 2012 I can just fit M31/M32 and M110 all in the same FoV with my scope.very nice Mikethat's broadly the field I get with my 16" dob but unfortunately from home the view is not quite as detailed..... Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.