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Cave Nebula (Sh2-155) widefield in HSTrgb

Posted on November 13, 2018November 1, 2020

www.astrobin.com/375877/

Sh2-155 is a diffuse nebula in the constellation Cepheus, within a larger nebula complex containing emission, reflection, and dark nebulosity.
It is widely known as the Cave Nebula, is an ionized H II region with ongoing star formation activity, at an estimated distance of 725 parsecs (2400 light-years) from Earth.
(description credits: wikipedia)

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: 1656×2230

Dates:Oct. 5, 2018, Oct. 7, 2018, Nov. 2, 2018, Nov. 6, 2018

Frames:
Astrodon B Gen.2 E-series 36mm: 23×1" (gain: 200.00) -20C bin 1×1
Astrodon G Gen.2 E-series 36mm: 23×1" (gain: 200.00) -20C bin 1×1
Astrodon HA 36mm – 5nm: 50×300" (gain: 200.00) -20C bin 1×1
Astrodon O-III 36mm – 5nm: 23×300" (gain: 200.00) -20C bin 1×1
Astrodon R Gen.2 E-series 36mm: 23×1" (gain: 200.00) -20C bin 1×1
Astrodon S-II 36mm – 5nm: 23×300" (gain: 200.00) -20C bin 1×1

Integration: 8.0 hours

Avg. Moon age: 26.41 days

Avg. Moon phase: 13.11%

Astrometry.net job: 2365517

RA center: 344.185 degrees

DEC center: 62.624 degrees

Pixel scale: 2.932 arcsec/pixel

Orientation: 359.390 degrees

Field radius: 1.131 degrees

Locations: Berga Resort, Berga, Barcelona, Spain

Data source: Backyard

via Flickr https://flic.kr/p/2a7e5fL

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