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Sh2-170 Little Rosette Nebula details in SHOrgb | by Carballada
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Sh2-170 Little Rosette Nebula details in SHOrgb

www.astrobin.com/vvc3mi/

 

Iteration on the Sharpless catalogue of faint nebulae.

 

It's not a common object, and here is the close up. Very faint and difficult. I am really proud of it :D

 

Sh2-170 is an emission nebula in Cassiopeia at around 7500 light years away.

The bright star at the centre of the nebula is ionising the surrounding hydrogen gas, causing the nebula to glow.

This nebula is about 2/3 the diameter of the full moon.

 

Technical card

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

 

Imaging camera:ZWO ASI1600MM-Cool

 

Mount:Mesu 200 Mk2

 

Guiding telescope or lens:Celestron OAG Deluxe

 

Guiding camera:ZWO ASI174 Mini

 

Focal reducer:Riccardi Reducer/Flattener 0.75x

 

Software:Main Sequence Software Seqence Generator Pro, Pleiades Astrophoto PixInsight

 

Filters:Astrodon L Gen.2 E-series 36mm, 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: 2328x1760

 

Dates:Sept. 25, 2019, Sept. 26, 2019, Sept. 27, 2019, Sept. 28, 2019

 

Frames:

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: 97x600" (gain: 200.00) -20C bin 1x1

Astrodon O-III 36mm - 5nm: 35x600" (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: 30x600" (gain: 200.00) -20C bin 1x1

 

Integration: 27.9 hours

 

Avg. Moon age: 27.48 days

 

Avg. Moon phase: 6.38%

 

Astrometry.net job: 2980353

 

RA center: 0.392 degrees

 

DEC center: 64.612 degrees

 

Pixel scale: 1.007 arcsec/pixel

 

Orientation: 91.169 degrees

 

Field radius: 0.408 degrees

 

Locations: AAS Montsec, Àger, Lleida, Spain

 

Data source: Own remote observatory

 

Remote source: Non-commercial independent facility

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Uploaded on October 13, 2019