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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


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



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% 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