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