I own the Atik 414ex osc and use it on a Celestron 9.25 with the Hyperstar lens and in spite of long subs in the 2 to 3 minute range at 30 minutes I cannot pull much data from the image at processing tine.
I have used both Nebulosity and Photoshop.
Is there a particular setting I need to use in the Artemis software?
Auto?
1x1
0x1
etc.
Attached is an example of the Supernova remnant.