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Bode’s Galaxy (M81) in LRGB

Posted on August 28, 2018November 1, 2020

Messier 81 (also known as NGC 3031 or Bode’s Galaxy) is a spiral galaxy about 12 million light-years away, in the constellation Ursa Major.

www.astrobin.com/338469

Technical card
Imaging telescopes or lenses: Altair Astro RC250-TT 10" RC Truss Tube, GSO RC8 Carbon Fiber

Imaging camera: ZWO ASI1600MM-Cool

Mount: Skywatcher AZ EQ-6 GT

Guiding camera: QHYCCD QHY5III174

Focal reducer: Astro-Physics CCDT67 – 0.67x Reducer

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

Filters: Optolong CLS – CCD (V4) 36mm, ZWO red, ZWO blue

Accessories: MoonLite CSL 2.5" Focuser with High Res Stepper Motor, ZWO EFW, Baader Planetarium Steeltrack 2"

Resolution: 4536×3406

Dates: Dec. 31, 2016, March 15, 2018, March 18, 2018

Frames:
Optolong CLS – CCD (V4) 36mm: 82×120" (gain: 75.00) -20C bin 1×1
Optolong CLS – CCD (V4) 36mm: 18×180" (gain: 75.00) -20C bin 1×1
ZWO blue: 21×90" (gain: 139.00) -20C bin 1×1
ZWO green: 21×90" (gain: 139.00) -20C bin 1×1
ZWO red: 22×90" (gain: 139.00) -20C bin 1×1

Integration: 5.2 hours

Avg. Moon age: 10.19 days

Avg. Moon phase: 3.35%

Astrometry.net job: 1980110

RA center: 148.890 degrees

DEC center: 69.070 degrees

Pixel scale: 0.557 arcsec/pixel

Orientation: 87.401 degrees

Field radius: 0.439 degrees

Locations: Berga Resort, Berga, Barcelona, Spain

via Flickr https://flic.kr/p/24oSCfu

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