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M92 NGC6431

PostPosted: Mon Jul 09, 2018 11:02 pm
by Apophis

Did this after the Guiding problems ,,couldn't calibrate PHD2
Includes NGC6344 , IC4645 , NGC6332.
43 Flats
Imaging telescope or lens:SkyWatcher 120ED Imaging System for Canon DSLR Cameras
Imaging camera:Canon 1000D modified
Mount:Skywatcher EQ6-R PRO Synscan
Guiding cameras:Skywatcher 9x50 Finderscope, QHYCCD 5L-II MONO
Focal reducer:Skywatcher 0.85x Focal Reducer/Corrector for Evostar-120ED
Software:ADOBE PHOTOSHOP CC, DeepSkyStacker x64 by Luc Coiffier, Tony Cook, David C. Partridge Deepsky Stacker 4.1 64bit, Astro Photography Tool
Accessory:QHYCCD PoleMaster
Resolution: 3523x1977
Dates: July 8, 2018
Frames: 25x300"
Integration: 2.1 hours
Avg. Moon age: 24.33 days
Avg. Moon phase: 27.59% job: 2138355
RA center: 259.202 degrees
DEC center: 43.092 degrees
Pixel scale: 1.492 arcsec/pixel
Orientation: 271.337 degrees
Field radius: 0.837 degrees
Locations: Home, Worthing, West Sussex, United Kingdom
Data source: Backyard

Re: M92 NGC6431

PostPosted: Fri Jul 13, 2018 10:34 pm
by Silversmith
Looks like you sorted out the guiding problems ! ?? :thumbsup:

Re: M92 NGC6431

PostPosted: Sat Jul 14, 2018 8:26 am
by galileo
nice one Roger, may I suggest a couple of ways of possibly improving your image?

I think if you reduce the sub length you might retain more star colour.
Also zoomed in on high resolution it looks as if your focus may be a tad out, how are you focussing ?

Re: M92 NGC6431

PostPosted: Sat Jul 14, 2018 12:48 pm
by julianr
The stars do look a bit out of focus- the star colour could be a overstretching problem- 5 min subs probably aren't blown at the F ratio unless using a high iso

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