Adreneline Posted May 4, 2017 Share Posted May 4, 2017 (edited) I am trying to work my way up the PI learning curve with this latest attempt at M101 - 28x300s subs plus 50 off bias, flat and dark - all at -10deg. Any advice on colour - too red/too blue ; noise - too much/too little ; sharpness etc. would be much appreciated. I've been chasing down focus problems for a while which I hope I've now largely resolved; I think softness in this image is down to seeing on the night - and a moon! I've also attached my Master Flat for comment - it seems too good to be true! Does a flat like this actually achieve anything? I work very hard at keeping my optics spotless. The 50 flats were taken with the scope pointing directly at a daylight illuminated white ceiling through two layers of white tee-shirt - ~30,000 ADU. Any advice would be much appreciated. Thank you in advance. Adrian SW ED80DS Pro + NEQ6 Pro + 0.85x R/F + UV/IR filter + Atik 414ex osc (fitted with HitecAstro focusing unit and SW motor focus control). SW 50mm finder/guide scope + IMX224 Sequence Generator Pro + PHD2 + CdC + PI Edited May 4, 2017 by Adreneline Correct typo 2 Link to comment Share on other sites More sharing options...
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