• Posted on: 14 February 2019
  • By: tihomiry

If you have used DeepSky stacker to stack RAW files, maybe you have notice that the resulting image is poor of color saturation. This is because it has a higher number of bits then the display could show. Going to less bits per Chanel we are loosing information so it is good idea to do any touches as early as possible. DeepSky stacker give us tool to achieve correct color balance and increase luminosity and saturation. The best color balanced image has all the 3 channel (RGB) histograms overlapped. You can adjust this as well as increase intensity of high lights and shadows (correct the background). Finally use the saturation slider to achieve the colors. But be careful with the color noise.

Below: NGC 7635 Bubble Nebula 06.09.2015. Pentax k-5, 30 frames x 30s. ISO 51200. UHC-S Oxygen III and Hydrogen alpha pass filter. Telescope SW 200pds, F1000mm 1:5. The “bubble” is created by the stellar wind from a massive hot young central star. At the upper left M52 Open Cluster. At the upper right – upcoming cloud

Recently I started to use Siril for processing my images as I was shown a new tool for star extraction Starnet++.

Since beginning of 2023 Chat GPT was launched as a human language model and start a new era of technological development.

As may times I said it is essential to keep all your shots over the years, as you can go back and reprocess them.
Make new discoveries or improve the resulting image quality.

When we have a new newton telescope we shroud avoid touch the collimation of the secondary mirror as we may get into troubles.