www.astrobin.com/392050/

NGC 1893 is an open cluster in the constellation Auriga.
It is about 3,280 light years away.

My longest integration so far: 35 hours.
I like all the Ha faint nebulosity around the highly photographed nebula.

Technical card
Imaging telescope or lens:Teleskop Service TS Photoline 107mm f/6.5 Super-Apo

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 HA 36mm – 5nm, Astrodon B Gen.2 E-series 36mm, Astrodon G Gen.2 E-series 36mm, Astrodon R Gen.2 E-series 36mm, Astrodon S-II 36mm – 5nm, Astrodon O-III 36mm – 5nm

Accessories:ZWO EFW, MoonLite NiteCrawler WR30

Resolution: 2328×1760

Dates:Jan. 7, 2019, Jan. 9, 2019, Jan. 10, 2019, Feb. 12, 2019

Frames:
Astrodon B Gen.2 E-series 36mm: 35×5" (gain: 200.00) -20C bin 1×1
Astrodon G Gen.2 E-series 36mm: 35×5" (gain: 200.00) -20C bin 1×1
Astrodon HA 36mm – 5nm: 135×600" (gain: 200.00) -20C bin 1×1
Astrodon O-III 36mm – 5nm: 36×600" (gain: 200.00) -20C bin 1×1
Astrodon R Gen.2 E-series 36mm: 35×5" (gain: 200.00) -20C bin 1×1
Astrodon S-II 36mm – 5nm: 38×600" (gain: 200.00) -20C bin 1×1

Integration: 35.0 hours

Avg. Moon age: 3.82 days

Avg. Moon phase: 18.60%

Astrometry.net job: 2535939

RA center: 80.682 degrees

DEC center: 33.424 degrees

Pixel scale: 2.933 arcsec/pixel

Orientation: 270.581 degrees

Field radius: 1.189 degrees

Locations: AAS Montsec, Àger, Lleida, Spain

Data source: Own remote observatory

Remote source: Non-commercial independent facility

via Flickr https://flic.kr/p/24fGM5k

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