Tulip Nebula (Sh-101) close-up in HSOrgb
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.
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
Dates:June 22, 2019, June 23, 2019, June 24, 2019, June 26, 2019, June 27, 2019, June 28, 2019
Astrodon B Gen.2 E-series 36mm: 35x30" (gain: 75.00) -20C bin 1x1
Astrodon G Gen.2 E-series 36mm: 35x30" (gain: 75.00) -20C bin 1x1
Astrodon HA 36mm - 5nm: 131x600" (gain: 200.00) -20C bin 1x1
Astrodon O-III 36mm - 5nm: 33x600" (gain: 200.00) -20C bin 1x1
Astrodon R Gen.2 E-series 36mm: 35x30" (gain: 75.00) -20C bin 1x1
Astrodon S-II 36mm - 5nm: 31x600" (gain: 200.00) -20C bin 1x1
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