Dim Planetary Nebula at Cancer, really dim.
With a surface magnitude of 27 arc-sec-1, it was discovered in 1955 by George Abell.
It is estimated to be about 2,000 light years away.
This picture is the result of my longest integration time up to today, it’s more than 90 hours of frame capture during the past 3 years.
The work desk was complicated due the different scopes and cameras used and the low signal captured.
Technical card
Imaging telescopes or lenses: Altair Astro RC250-TT 10″ RC Truss Tube · Teleskop Service TS Photoline 107mm f/6.5 Super-Apo
Imaging cameras: ZWO ASI183MM-Cool · ZWO ASI1600MM-Cool
Mounts: Skywatcher EQ6R Pro · Mesu 200 Mk2
Guiding telescopes or lenses: Celestron OAG Deluxe · Teleskop Service TSOAG9 Off-Axis Guider
Guiding cameras: ZWO ASI290 Mini · ZWO ASI174 Mini
Focal reducers: Riccardi Reducer/Flattener 0.75x · Telescope-Service TS 2″ Flattener
Software: Pleiades Astrophoto PixInsight · Seqence Generator Pro
Filters: Astrodon O-III 36mm – 5nm · Astrodon R Gen.2 E-series 36mm · Astrodon G Gen.2 E-series 36mm · Astrodon B Gen.2 E-series 36mm · Astrodon HA 36mm – 5nm · Astrodon L Gen.2 E-series 36mm
Accessory: ZWO EFW · Pegasus Astro Falcon Rotator · Pegasus Astro Ultimate Powerbox v2 · Astrolink 4.0 mini · MoonLite NiteCrawler WR30 · TALON6 R.O.R · MoonLite CSL 2.5″ Focuser with High Res Stepper Motor
Dates:March 8, 2019 , March 9, 2019 , March 10, 2021 , March 11, 2021 , March 16, 2021 , April 6, 2021
Frames:
Astrodon B Gen.2 E-series 36mm: 90×60″ (1h 30′) (gain: 75.00) -20C bin 1×1
Astrodon G Gen.2 E-series 36mm: 90×60″ (1h 30′) (gain: 75.00) -20C bin 1×1
Astrodon HA 36mm – 5nm: 292×600″ (48h 40′) (gain: 200.00) -20C bin 1×1
Astrodon O-III 36mm – 5nm: 169×600″ (28h 10′) (gain: 111.00) -15C bin 1×1
Astrodon O-III 36mm – 5nm: 54×600″ (9h) (gain: 200.00) -20C bin 1×1
Astrodon R Gen.2 E-series 36mm: 90×60″ (1h 30′) (gain: 75.00) -20C bin 1×1
Integration: 90h 20′
Avg. Moon age: 14.28 days
Avg. Moon phase: 10.04%
Astrometry.net job: 4556202
RA center: 8h 54′ 12″
DEC center: +8° 53′ 56″
Pixel scale: 1.007 arcsec/pixel
Orientation: 0.339 degrees
Field radius: 0.408 degrees
Find images in the same area
Resolution: 2328×1760
Locations: AAS Montsec, Àger, Lleida, Spain
Data source: Own remote observatory
Remote source: Non-commercial independent facility
via Flickr https://flic.kr/p/2m23FP4