On the 12th there was a short period of clear skies and I took the opportunity to take an image of NGC 7789.
This star cluster has a good variety of star colours, so I decided to take exposures of 30 sec each, 134 in total.
Scope was a 102mm F7 meade apo on a HEQ5 Pro, guided with ETX70+ASI 120mm.
Captured with APT, processed with APP and Photoshop.
One thing I am not happy with is the blue colour absence, I wanted to bring out the contrast of Blue and Red, but no such luck.
Any tips on that??
I used APP to do the stretching with DDP and keep as much saturation.
Stretching in Photoshop did not work better, rather worse. I have read several threads, but they all end up with Acrsinh stretching in PI, and unfortunately I do not own PI...
Edit: the thumbnail does show less colour than my full size result... Larger size on flickr.com/astronomyphoto
Edited by AstronomyFred, 16 January 2021 - 07:00 AM.