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Sh2-158 and Sh2-161b

Posted on December 3, 2020January 12, 2021

www.astrobin.com/a6yw4n/

It’s all about the NGC 7538 region in the constellation Cepheus.
This region of active star formation is located about 9,100 light-years from Earth.

The picture is a result of more than 78 hours of integration time in narrow band and rgb channels.
I could say that is a more complicated target than I thought at the beginning, it was difficult to post process this image due the high dynamic range needed to reveal all the details.

Technical card
Imaging telescopes or lenses: Teleskop Service TS Photoline 107mm f/6.5 Super-Apo · Altair Astro RC250-TT 10″ RC Truss Tube

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 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 · Astrodon L Gen.2 E-series 36mm

Accessory: Pegasus Astro Falcon Rotator · ZWO EFW · Astrolink 4.0 mini · Pegasus Astro Ultimate Powerbox v2 · MoonLite NiteCrawler WR30 · TALON6 R.O.R · MoonLite CSL 2.5″ Focuser with High Res Stepper Motor

Dates:Oct. 24, 2020 , Oct. 25, 2020 , Nov. 8, 2020 , Nov. 12, 2020 , Nov. 13, 2020 , Nov. 17, 2020

Frames:
Astrodon B Gen.2 E-series 36mm: 110×30″ (gain: 75.00) -20C bin 1×1
Astrodon G Gen.2 E-series 36mm: 110×30″ (gain: 75.00) -15C bin 1×1
Astrodon HA 36mm – 5nm: 224×600″ (gain: 200.00) -20C bin 1×1
Astrodon O-III 36mm – 5nm: 117×600″ (gain: 111.00) -15C bin 1×1
Astrodon R Gen.2 E-series 36mm: 110×30″ (gain: 75.00) -20C bin 1×1
Astrodon S-II 36mm – 5nm: 113×600″ (gain: 111.00) -15C bin 1×1

Integration: 78.4 hours

Avg. Moon age: 16.02 days

Avg. Moon phase: 33.72%

Astrometry.net job: 4054629

RA center: 0h 3′ 14″

DEC center: +67° 16′ 4″

Pixel scale: 0.797 arcsec/pixel

Orientation: 0.709 degrees

Field radius: 0.399 degrees

Resolution: 2304×1684

Locations: AAS Montsec, Àger, Lleida, Spain

Data source: Own remote observatory

Remote source: Non-commercial independent facility

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