NGC 7331 (Caldwell 30)

This was my second encounter with the 20" Dall Kirkham telescope at Skygems Observatories.

• AG 20-inch f/6.7 iDK telescope
• FLI Proline 16803 CCD
• 12 x 300 seconds luminance only
• 2000px x 2000px
• August 2020

• AG 20-inch f/6.7 iDK telescope
• FLI Proline 16803 CCD
• 12 x 300 seconds L, 4 x 300 seconds each R, G and B
• 1800px x 1800px
• August 2020

• 12-inch f/8 LX600 telescope
• SBIG STF-8300EN CCD
• 160 x 90 seconds
• 1513px x 957px
• October 2020