Hi,
I have a thought about imaging the skyglow as Dark frames and use them in our image processing.
In city area if we manage to capture skyglow by pointing the telescope at Zenith position, we can Stop the mount tracking so it won't cross meridian.
Then we can simply out of focus the telescope to blur out stars and capture that out of focused Zenith pointed FoV at same exposures of our Light frames.
We can get uniform skyglow if capture multiple frames say 30-50 frames and use them as DARK Frames in our stacking process.
What it will benifit?
It will help to remove ambient background gradient from images which caused by light pollution.
Will get higher S/N ratio with same data.
You may try it with or without Light-pollution filters and check which gives better output.
Did anyone tried this method before?
Mention your inputs about the same.
Thanks
I have a thought about imaging the skyglow as Dark frames and use them in our image processing.
In city area if we manage to capture skyglow by pointing the telescope at Zenith position, we can Stop the mount tracking so it won't cross meridian.
Then we can simply out of focus the telescope to blur out stars and capture that out of focused Zenith pointed FoV at same exposures of our Light frames.
We can get uniform skyglow if capture multiple frames say 30-50 frames and use them as DARK Frames in our stacking process.
What it will benifit?
It will help to remove ambient background gradient from images which caused by light pollution.
Will get higher S/N ratio with same data.
You may try it with or without Light-pollution filters and check which gives better output.
Did anyone tried this method before?
Mention your inputs about the same.
Thanks
