Astrobdlbug Posted October 16, 2021 Share Posted October 16, 2021 (edited) Hi everyone, this is an audasious process of 98mins ASI2600 MC OSC RGB and 70mins of ASI1600MM Ha (Antlia 3nm) - all taken through AT106EDT native, so no FF/FR, so full 690mm f/l There is way too much noise reduction and a bit of Photoshop artistic license to bring the extremely bright star Gamma Cassiopeiae into some sort of control with masks ,levels ,saturation and local colour balance. I cropped the ASI2600 Frame to roughly match the ASI FOV then I added the ASI1600 Ha layer as a starless version and used PS blend mode lighten under a mask to avoid affecting the surrounding star colours. I am not hopefull that there is much imaging opportunity for at least another week, possibly more, so I pushed my megre pickings of 2hr 48min to the max and probably beyond. I will hope to present a deeper version at some point in the future, but for now here's my 2.5hr RGB_Ha version of the Ghost of Cassiopeiae Bryan Edited October 16, 2021 by Astrobdlbug 5 Quote Link to comment Share on other sites More sharing options...
Dmack1 Posted October 16, 2021 Share Posted October 16, 2021 I think that's really good. The ghost is dark enough to draw you in and the stars are beautiful. 1 Quote Link to comment Share on other sites More sharing options...
paul Posted October 17, 2021 Share Posted October 17, 2021 You certainly haven't made it easy for yourself but that image is developing nicely. I like your palette👍. 1 Quote Link to comment Share on other sites More sharing options...
Astrobdlbug Posted October 17, 2021 Author Share Posted October 17, 2021 12 hours ago, Dmack1 said: The ghost is dark enough to draw you in and the stars are beautiful. Appreciate the feedback - it’s early days with this OSC and it does seem to delivery very good colour in stars - I also used ArcSin stretch in PI as I read a post about this method ages ago as it is better controlling star colours - so far albeit one image it delivers what it says on the tin Bryan 1 Quote Link to comment Share on other sites More sharing options...
MarkAR Posted October 23, 2021 Share Posted October 23, 2021 Really good for such a short time on it. Nice star colours and taming the big one isn't easy. 1 Quote Link to comment Share on other sites More sharing options...
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