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I agreeImaging 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:Pleiades Astrophoto PixInsight , Astro-Physics AAPC , Seqence Generator Pro
Filters:Astrodon O-III 36mm - 5nm , Astrodon S-II 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
Accessories:ZWO EFW , MoonLite NiteCrawler WR30
Dates:Dec. 20, 2018 , Dec. 31, 2018 , Jan. 4, 2019
Frames:
Astrodon B Gen.2 E-series 36mm: 45x10" (gain: 200.00) -20C bin 1x1
Astrodon G Gen.2 E-series 36mm: 45x10" (gain: 200.00) -20C bin 1x1
Astrodon HA 36mm - 5nm: 49x600" (gain: 200.00) -20C bin 1x1
Astrodon O-III 36mm - 5nm: 20x600" (gain: 200.00) -20C bin 1x1
Astrodon R Gen.2 E-series 36mm: 45x10" (gain: 200.00) -20C bin 1x1
Astrodon S-II 36mm - 5nm: 20x600" (gain: 200.00) -20C bin 1x1
Integration: 15.2 hours
Avg. Moon age: 21.55 days
Avg. Moon phase: 41.22%
Astrometry.net job: 2520233
RA center: 0h 1' 34"
DEC center: +64° 37' 2"
Pixel scale: 2.932 arcsec/pixel
Orientation: 90.447 degrees
Field radius: 1.189 degrees
Resolution: 2328x1760
Locations: AAS Montsec, Àger, Lleida, Spain
Data source: Own remote observatory
Remote source: Non-commercial independent facility
Next one from the Sharpless catalogue of faint nebulae.
It's not a common object, and of course... it's faint.
Sh2-170 is an emission nebula in Cassiopeia at around 7500 light years away.
Always taken pictures of the past, something that happened 7500 year a go and now arrive to the earth.
The bright star at the centre of the nebula is ionising the surrounding hydrogen gas, causing the nebula to glow.
This nebula is about 2/3 the diameter of the full moon.
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