Hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  B168  ·  Cocoon nebula  ·  IC 5146  ·  IC5146  ·  Sh2-125  ·  VdB147
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IC 5146 Cocoon Nebula #3, 


            Molly Wakeling
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Imaging telescopes or lenses: Takahashi FSQ-106N

Imaging cameras: ZWO ASI294MC Pro  ·  ZWO ASI1600MM Pro

Mounts: Celestron Advanced VX

Guiding telescopes or lenses: Orion 50mm guidescope

Guiding cameras: QHY5

Software: Seqence Generator Pro  ·  PixInsight

Filters: Astronomik CLS 2"  ·  Astronomik H-Alpha 12nm T2

Dates:Sept. 1, 2019Sept. 7, 2019Sept. 8, 2019Sept. 9, 2019Sept. 19, 2019Sept. 20, 2019Sept. 22, 2019Sept. 23, 2019Sept. 24, 2019Sept. 25, 2019Sept. 26, 2019Oct. 1, 2019Oct. 2, 2019Oct. 3, 2019Oct. 9, 2019

Astronomik CLS 2": 138x180" (gain: 120.00) -15C bin 1x1
Astronomik H-Alpha 12nm T2: 22x300" (gain: 139.00) -15C bin 1x1

Integration: 8.7 hours

Darks: ~34

Bias: ~78

Avg. Moon age: 14.55 days

Avg. Moon phase: 42.39%

Bortle Dark-Sky Scale: 7.00

Astrometry.net job: 2992001

RA center: 21h 53' 21"

DEC center: +47° 15' 1"

Pixel scale: 1.483 arcsec/pixel

Orientation: 90.491 degrees

Field radius: 0.966 degrees

Resolution: 3870x2645

Locations: East Bay Area, CA, Berkeley, CA, United States

Data source: Backyard


I didn't get as much of the dark nebula as I would have liked, but what can ya say for 3-minute subs under Bortle 7 skies? Also, the Ha made a huge difference. I processed a version without it (I'll add a link to the applicable blog post once I actually write it up), and wow what a difference it makes!


Sky plot

Sky plot


IC 5146 Cocoon Nebula #3, 


            Molly Wakeling