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Contains:  Bubble nebula, NGC 7635
Getting plate-solving status, please wait...
Bubble Nebula, 


            John Michael Bell...
Bubble Nebula

Technical card

Resolution: 1583x1011

Dates:Sept. 27, 2019

Frames:Optolong L-eNhance 2": 50x150" (gain: 125.00) -15C bin 2x2

Integration: 2.1 hours

Darks: ~18

Flats: ~30

Bias: ~300

Avg. Moon age: 28.05 days

Avg. Moon phase: 2.45%

Bortle Dark-Sky Scale: 5.00 job: 2949455

RA center: 350.172 degrees

DEC center: 61.184 degrees

Pixel scale: 1.097 arcsec/pixel

Orientation: 167.765 degrees

Field radius: 0.286 degrees

Locations: Backyard, Tucson, Arizona, United States

Data source: Backyard


Hi everyone. So I made an equipment change recently. I had been using the 80mm APO for a while but I decided to take out the 8" Astrograph for a change. I had some difficulty collimating it in the past but after some research I think I finally have it ready to go. In addition I decided to start using 2x binning with the 8"/ASI178 combo because my stars were completely oversampled and I had to throw out tons of data. I was hesitant to use binning because of the loss of resolution but it was clear after one sub that this was the right choice. I hope you like!



John Michael Bell...
License: Attribution Creative Commons


  • Bubble Nebula, 


            John Michael Bell...
  • Final
    Bubble Nebula, 


            John Michael Bell...

Sky plot

Sky plot


Bubble Nebula, 


            John Michael Bell...