+Graham Posted March 4, 2013 Share Posted March 4, 2013 Finally got the ST 80 to focus tonight. This caused another set of problems with PHD. Where it would calibrate in 20 - 30 steps with my old set up with the ST 80 it took just 5 steps. Solution was to reduce the calibration pulses down from 3500 to just 750. Any way once that was sorted I set about M 51. Although it looked really clear the seeing turned out to be pretty terrible. I managed to use just 23 of the 55 subs. Only after I had packed up I discovered the power to the dew heaters had died just to add to the problems. Helios 200 Newt. Canon 350 D modded. 23 - 180 second subs at ISO 800 11 Darks. 21 Flats. Stacked in DSS Light process in PS 6. Link to comment Share on other sites More sharing options...
andyboy1970 Posted March 4, 2013 Share Posted March 4, 2013 Very nice. You've got a lot of background noise from stretching the histogram. I went from the ST80 guiding to finderguider and the calibration takes 32 steps!! going to have to tweak that.... Link to comment Share on other sites More sharing options...
Doc Posted March 4, 2013 Share Posted March 4, 2013 Another great M51 but I agree the background noise is a little distracting but I do like the colour. Link to comment Share on other sites More sharing options...
oldfruit Posted March 4, 2013 Share Posted March 4, 2013 Very nice Graham, lovely colour. Link to comment Share on other sites More sharing options...
Sheila Posted March 4, 2013 Share Posted March 4, 2013 Nice colour graham Sheila Link to comment Share on other sites More sharing options...
Stephen Posted March 4, 2013 Share Posted March 4, 2013 Nice image Stephen Link to comment Share on other sites More sharing options...
andyboy1970 Posted March 4, 2013 Share Posted March 4, 2013 (edited) Couldn't resist playing - Made a duplicate, clone tool to blank out the galaxy in the duplicate, gussian blur (130), slight darken in curves, then screen mode blending at 90%, flatten image and slight curves applied. Edited March 4, 2013 by andyboy1970 Link to comment Share on other sites More sharing options...
+Graham Posted March 4, 2013 Author Share Posted March 4, 2013 Andy I have no idea what you did but it looks great. Link to comment Share on other sites More sharing options...
andyboy1970 Posted March 4, 2013 Share Posted March 4, 2013 Andy I have no idea what you did but it looks great. I said what I did under the image........ Have a try just make sure the duplicate is the one you mess with... Link to comment Share on other sites More sharing options...
+Graham Posted March 4, 2013 Author Share Posted March 4, 2013 Andy I read what you put under the image but I am afraid it might as well be in Chinese as I have no idea what you did or how to do it. Not got that far in processing yet. Link to comment Share on other sites More sharing options...
+Graham Posted March 4, 2013 Author Share Posted March 4, 2013 Whats causes the dohnuts when zoomed ? Pat I over did the stretching Pat Link to comment Share on other sites More sharing options...
andyboy1970 Posted March 5, 2013 Share Posted March 5, 2013 (edited) Whats causes the dohnuts when zoomed ? Pat The focus is ever so slightly out which is noticeable when zoomed right in, but the overall image is great. One thing that got me was the lack of diffraction spikes for a Newt image.... Edited March 5, 2013 by andyboy1970 Link to comment Share on other sites More sharing options...
Guest Eddy Posted March 5, 2013 Share Posted March 5, 2013 The focus is ever so slightly out which is noticeable when zoomed right in, but the overall image is great. One thing that got me was the lack of diffraction spikes for a Newt image.... The ST80 isn't a newt you should know that, you have one yourself Link to comment Share on other sites More sharing options...
+Graham Posted March 5, 2013 Author Share Posted March 5, 2013 Only get decent spikes on bright stars Pat, The seeing was really poor when I did this one so nothing was particularly shining. Link to comment Share on other sites More sharing options...
Guest Eddy Posted March 5, 2013 Share Posted March 5, 2013 Doh, I just read the top bit about the st80 focus Link to comment Share on other sites More sharing options...
andyboy1970 Posted March 5, 2013 Share Posted March 5, 2013 Doh, I just read the top bit about the st80 focus Link to comment Share on other sites More sharing options...
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