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Pinwheel Galaxy (M101) in HaLRGB

Posted on June 25, 2019November 1, 2020

 

http://www.astrobin.com/411184/

The Pinwheel Galaxy (Messier 101 or NGC 5457) is a spiral galaxy distanced 21 million light-years away from Earth

M101 is a large galaxy, with a diameter of 170,000 light-years. By comparison, the Milky Way has a diameter of 258,000 light years. It has around a trillion stars, twice the number in the Milky Way.
It has a disk mass on the order of 100 billion solar masses, along with a small central bulge of about 3 billion solar masses.

(desc. credits: Wikipedia)

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

Imaging camera:ZWO ASI1600MM-Cool

Mount:Astro-Physics Mach-1 GTO CP4

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, Astro-Physics AAPC, 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:June 4, 2019, June 7, 2019, June 8, 2019, June 18, 2019

Frames:
Astrodon B Gen.2 E-series 36mm: 36×180″ (gain: 75.00) -20C bin 1×1
Astrodon G Gen.2 E-series 36mm: 38×180″ (gain: 75.00) -20C bin 1×1
Astrodon HA 36mm – 5nm: 12×600″ (gain: 200.00) -20C bin 1×1
Astrodon L Gen.2 E-series 36mm: 175×180″ (gain: 75.00) -20C bin 1×1
Astrodon R Gen.2 E-series 36mm: 34×180″ (gain: 75.00) -20C bin 1×1

Integration: 16.1 hours

Avg. Moon age: 6.73 days

Avg. Moon phase: 37.75%

Astrometry.net job: 2754493

RA center: 210.800 degrees

DEC center: 54.350 degrees

Pixel scale: 1.006 arcsec/pixel

Orientation: 269.885 degrees

Field radius: 0.408 degrees

Locations: AAS Montsec, Àger, Lleida, Spain

Data source: Own remote observatory

Remote source: Non-commercial independent facility

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