Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  B168  ·  Cocoon Nebula  ·  IC 5146  ·  Sh2-125  ·  VdB147
Getting plate-solving status, please wait...
IC5146 The Cocoon Nebula via IDAS LPS D3, John Jennings

IC5146 The Cocoon Nebula via IDAS LPS D3

Getting plate-solving status, please wait...
IC5146 The Cocoon Nebula via IDAS LPS D3, John Jennings

IC5146 The Cocoon Nebula via IDAS LPS D3

Equipment

Loading...

Acquisition details

Loading...

Description

Shot this the with the IDAS LPS D3 (NGS1) because there was a high cloud layer. The contrast ratio via CCD Inspector the night before with 10 minute subs and only a HEUBI UV/IR filter ranged from 6.0-7.2 not very great for this dark site. With the D3, my contrast ratio ranged from 8-12, a significant improvement. This is in a 21.87 MPSAS sky.  I could see a significant difference in the background noise and processing the final image was very easy. I realize I had 30 subs vs 19, but I'm pretty sure the filter was the difference based on CCD Inspectors analysis. I could see no difference in color saturation with the D3. All colors came through with no appreciable losses.  Any difference was due to my processing changes.  I'm going to stick with the D3 for a while.

Comments

Sky plot

Sky plot

Histogram

IC5146 The Cocoon Nebula via IDAS LPS D3, John Jennings