Quote:
Originally Posted by Andy01
Managed another night under clear & dark skies to add data to last months post.
Extra data sure makes a difference! Wow, this thing is dim...
Big one HERE
Reckon another night (or two) would smooth it out further, but overall I'm pretty happy with this first attempt so far.... and hey, the core is yellow now too 
That said, I'm curious as to how you folks do the initial stretch/combine on RGB data to get nice round, perfectly registered LRGB stars without halos etc.
Is there some secret voodoo ritual there that I need to be initiated into?
Your workflow suggestions would be most welcome
Cheers
Andy |
Really a very lovely NGC300 which is one of my favourite southern galaxies. I think its more photogenic than its cousin M33 in the northern hemisphere.
The yellow colour of a lot of the stars though seems off. Its too bright a yellow. Perhaps some adjustment needed there?
Lots of detail.
I don't see much halo around the stars though. Which ones are you referring to? Star halos are a bit of a problem with astro processing - I agree. Its something I have had trouble with.
If its not hardware connected (poor quality glass in the corrector lens etc) and you are using good filters then I would look to 2 possibilities. One is the well depth of the sensor. The 8300 well depth is not that great so getting the right exposure length so the wells are not full and overflowing and the outer rings of the star don't expose too much. I found star blooming/halos most prominent with a 694 sensor which had relatively small wells. Overstretching the stars will do it too - usually in the RGB images. Blue often is the least sharp.
Greg.