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Pickering's Triangle (Ha + O3 + RGB), 


            Scott Davis
Pickering's Triangle (Ha + O3 + RGB)

Pickering's Triangle (Ha + O3 + RGB)

Technical card

Resolution: 3000x1978

Dates:June 14, 2015June 15, 2015June 16, 2015June 17, 2015June 18, 2015June 19, 2015

Astronomik 12nm OIII Clip-In Filter: 124x300" ISO1600
Astronomik 6nm Ha Clip-In Filter: 48x600" ISO1600
One-Shot Color: 20x300" ISO1600

Integration: 20.0 hours

Darks: ~15

Flats: ~40

Flat darks: ~40

Bias: ~40

Avg. Moon age: 15.16 days

Avg. Moon phase: 3.47%

Bortle Dark-Sky Scale: 6.33 job: 670333

RA center: 312.315 degrees

DEC center: 31.427 degrees

Pixel scale: 2.153 arcsec/pixel

Orientation: 89.299 degrees

Field radius: 1.075 degrees

Locations: My Backyard, Clovis, California, United States; Big Stump, Kings Canyon National Park, CA, United States


Pickering's Triangle is a beautiful area of ionized gas that makes up part of the Cygnus Loop, also known as the Veil Nebula Complex. This image uses RGB data (captured from Big Stump in Kings Canyon National Park) for the star color and a base layer, and adds in narrowband Hydrogen-Alpha and Oxygen-III data captured from my backyard in Clovis, California.



Scott Davis
License: Attribution-NonCommercial-NoDerivs Creative Commons

Sky plot

Sky plot


Pickering's Triangle (Ha + O3 + RGB), 


            Scott Davis