ApophisAstros Posted February 27, 2022 Share Posted February 27, 2022 Both versions with and without OSC stars. Imaging Telescopes Or Lenses William Optics RedCat 51 APO Apochromatic Quadruplet Refractor · Altair Astro Lightwave 66ED-R Imaging Cameras QHYCCD 183 Cooled Color · Atik 460EX Mono Mounts Skywatcher EQ6-R PRO Synscan Filters Altair Astro Tri-Band OSC · baader Oiii 3.5nm · Baader SII 1,25" 4.5nm · Baader Ha3.5 nm Accessories Aurora Eurotech Flat Panel · QHYCCD PoleMaster Software PixInsight 1.8 Ripley · Adobe Photoshop CS3 Extended · Astro Photography Tool Guiding Cameras Sky-Watcher Evoguide 50 ED Feb. 25, 2022 Frames: Altair Astro Tri-Band OSC: 70x600" (11h 40') -20C bin 1x1 Baader Ha3.5 nm: 32x900" (8h) -15C bin 1x1 Baader Oiii 4.5nm 1.25: 30x600" (5h) -15C bin 1x1 Baader SII 1,25" 4.5nm: 28x-15" (53') -15C bin 1x1 Integration: 24h 33' Flats:16 Flat darks:16 Avg. Moon age:23.83 days Avg. Moon phase:32.44% Bortle Dark-Sky Scale:5.00 Roger 3 Quote Link to comment Share on other sites More sharing options...
Sonyme Posted March 1, 2022 Share Posted March 1, 2022 Is there a technical reason why the bright star centre right looks stretched whilst the other stars in the field look pretty round? Gary Quote Link to comment Share on other sites More sharing options...
ApophisAstros Posted March 1, 2022 Author Share Posted March 1, 2022 Maybe some nebulosity in front of it? Roger Quote Link to comment Share on other sites More sharing options...
paul Posted March 1, 2022 Share Posted March 1, 2022 5 hours ago, ApophisAstros said: Maybe some nebulosity in front of it? Roger I was curious so I checked my own images, I think it's two bright stars close enough not to resolve fully. Quote Link to comment Share on other sites More sharing options...
ApophisAstros Posted March 1, 2022 Author Share Posted March 1, 2022 If you look at the one with fewer stars it looks like two stars , i agree. Roger Quote Link to comment Share on other sites More sharing options...
GazAstro Posted March 4, 2022 Share Posted March 4, 2022 Agreed, I'd say it's a binary star. Quote Link to comment Share on other sites More sharing options...
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