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Tulip Nebula (Sh-101) close-up in HSOrgb

Posted on July 10, 2019November 1, 2020

https://www.astrobin.com/414611/

The Tulip Nebula (Sharpless 101) is an emission nebula in Cygnus.
It lies at an approximate distance of 6,000 light years from Earth and has a linear diameter of about 70 light years.
It’s apparent magnitude is 9.0 and it occupies an area of 16 x 9 arc minutes of apparent sky.

I used HSO palette with RGB stars. More than 33 hours of integration time, selecting only the best frames of the total valid frames captured (80%).

All c&c will be appreciated.

Technical card

Imaging telescope or lens:Altair Astro RC250-TT 10″ RC Truss Tube

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: 2568×3411

Dates:June 22, 2019,  June 23, 2019,  June 24, 2019,  June 26, 2019,  June 27, 2019, June 28, 2019

Frames:
Astrodon B Gen.2 E-series 36mm: 35×30″ (gain: 75.00) -20C bin 1×1
Astrodon G Gen.2 E-series 36mm: 35×30″ (gain: 75.00) -20C bin 1×1
Astrodon HA 36mm – 5nm: 131×600″ (gain: 200.00) -20C bin 1×1
Astrodon O-III 36mm – 5nm: 33×600″ (gain: 200.00) -20C bin 1×1
Astrodon R Gen.2 E-series 36mm: 35×30″ (gain: 75.00) -20C bin 1×1
Astrodon S-II 36mm – 5nm: 31×600″ (gain: 200.00) -20C bin 1×1

Integration: 33.4 hours

Avg. Moon age: 22.26 days

Avg. Moon phase: 48.88%

Astrometry.net job: 2789822

RA center: 299.944 degrees

DEC center: 35.352 degrees

Pixel scale: 0.671 arcsec/pixel

Orientation: 0.147 degrees

Field radius: 0.398 degrees

Data source: Own remote observatory

Remote source: Non-commercial independent facility

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