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Tulip Nebula (Sh-101) close-up in HSOrgb | by Carballada
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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.


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: 2568x3411


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% 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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Uploaded on July 10, 2019