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Cocoon Nebula details (IC5146) in HαRGB

Posted on September 27, 2019April 21, 2021

www.astrobin.com/slwz3t/

Close to 30 hours of integration time, under one of the best skies in Europe!

IC 5146 (the Cocoon Nebula) is a reflection/emission nebula in the constellation Cygnus. The cluster is about 4,000 ly away, and the central star that lights it formed about 100,000 years ago; the nebula is about 12 arcmins across, which is equivalent to a span of 15 light years.

(description credits: Wikipedia)

Technical card
Imaging telescope or lens:Altair Astro RC250-TT 10″ RC Truss Tube

Imaging camera:ZWO ASI1600MM-Cool

Mount:Mesu 200 Mk2

Guiding telescope or lens:Celestron OAG Deluxe

Guiding camera:QHYCCD QHY5III174

Focal reducer:Riccardi Reducer/Flattener 0.75x

Software:Main Sequence Software Seqence Generator Pro, Pleiades Astrophoto PixInsight

Filters:Astrodon L Gen.2 E-series 36mm, Astrodon HA 36mm – 5nm, Astrodon B Gen.2 E-series 36mm, Astrodon G Gen.2 E-series 36mm, Astrodon R Gen.2 E-series 36mm

Accessories:ZWO EFW, MoonLite NiteCrawler WR30

Resolution: 2328×1760

Dates:Sept. 5, 2019, Sept. 6, 2019, Sept. 7, 2019, Sept. 23, 2019, Sept. 26, 2019

Frames:
Astrodon B Gen.2 E-series 36mm: 80×180″ (gain: 75.00) -20C bin 1×1
Astrodon G Gen.2 E-series 36mm: 80×180″ (gain: 75.00) -20C bin 1×1
Astrodon HA 36mm – 5nm: 20×600″ (gain: 200.00) -20C bin 1×1
Astrodon L Gen.2 E-series 36mm: 280×180″ (gain: 75.00) -20C bin 1×1
Astrodon R Gen.2 E-series 36mm: 80×180″ (gain: 75.00) -20C bin 1×1

Integration: 29.3 hours

Avg. Moon age: 14.73 days

Avg. Moon phase: 40.69%

Astrometry.net job: 2947619

RA center: 328.369 degrees

DEC center: 47.267 degrees

Pixel scale: 1.007 arcsec/pixel

Orientation: 270.069 degrees

Field radius: 0.408 degrees

Locations: AAS Montsec, Àger, Lleida, Spain

Data source: Own remote observatory

Remote source: Non-commercial independent facility

via Flickr https://flic.kr/p/2hmHkMQ

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