Hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)
Pickering's Triangle (Ha + O3 + RGB), 


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

Technical card

Imaging telescopes or lenses: Explore Scientific ED102 APO

Imaging cameras: Canon EOS Rebel T3i

Mounts: Celestron CGEM Hypertuned

Guiding telescopes or lenses: Orion ShortTube 80

Guiding cameras: Orion StarShoot Autoguider

Focal reducers: Astro-Tech AT2FF

Software: Sequence Generator Pro  ·  DeepSkyStacker  ·  Photoshop CS6

Filters: Astronomik 6nm Ha Clip-In Filter  ·  Astronomik 12nm OIII Clip-In Filter  ·  One-Shot Color

Accessory: Robofocus  ·  Home Made Peltier Cooler for T3i

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

Astronomik 12nm OIII Clip-In Filter: 124x300" (10h 20') ISO1600
Astronomik 6nm Ha Clip-In Filter: 48x600" (8h) ISO1600
One-Shot Color: 20x300" (1h 40') ISO1600

Integration: 20h

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

Basic astrometry details

Astrometry.net job: 670333

RA center: 20h 49' 15"

DEC center: +31° 25' 37"

Pixel scale: 2.153 arcsec/pixel

Orientation: 89.299 degrees

Field radius: 1.075 degrees

Resolution: 620x409

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.


Sky plot

Sky plot


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


            Scott Davis