Hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  10 Cas  ·  Sh2-170  ·  The star 10Cas
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Sh2-170 Little Rosette Nebula in HSOrgb, 



    
        

            Jose Carballada
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Sh2-170 Little Rosette Nebula in HSOrgb

Imaging telescopes or lenses: Teleskop Service TS Photoline 107mm f/6.5 Super-Apo

Imaging cameras: ZWO ASI1600MM-Cool

Mounts: Astro-Physics Mach-1 GTO CP4

Guiding telescopes or lenses: Celestron OAG Deluxe

Guiding cameras: QHYCCD QHY5III174

Focal reducers: Riccardi Reducer/Flattener 0.75x

Software: Pleiades Astrophoto PixInsight  ·  Astro-Physics AAPC  ·  Seqence Generator Pro

Filters: Astrodon O-III 36mm - 5nm  ·  Astrodon S-II 36mm - 5nm  ·  Astrodon R Gen.2 E-series 36mm  ·  Astrodon G Gen.2 E-series 36mm  ·  Astrodon B Gen.2 E-series 36mm  ·  Astrodon HA 36mm - 5nm

Accessory: ZWO EFW  ·  MoonLite NiteCrawler WR30


Dates:Dec. 20, 2018Dec. 31, 2018Jan. 4, 2019

Frames:
Astrodon B Gen.2 E-series 36mm: 45x10" (gain: 200.00) -20C bin 1x1
Astrodon G Gen.2 E-series 36mm: 45x10" (gain: 200.00) -20C bin 1x1
Astrodon HA 36mm - 5nm: 49x600" (gain: 200.00) -20C bin 1x1
Astrodon O-III 36mm - 5nm: 20x600" (gain: 200.00) -20C bin 1x1
Astrodon R Gen.2 E-series 36mm: 45x10" (gain: 200.00) -20C bin 1x1
Astrodon S-II 36mm - 5nm: 20x600" (gain: 200.00) -20C bin 1x1

Integration: 15.2 hours

Avg. Moon age: 21.55 days

Avg. Moon phase: 41.22%


Astrometry.net job: 2520233

RA center: 0h 1' 34"

DEC center: +64° 37' 2"

Pixel scale: 2.932 arcsec/pixel

Orientation: 90.447 degrees

Field radius: 1.189 degrees


Resolution: 2328x1760

Locations: AAS Montsec, Àger, Lleida, Spain

Data source: Own remote observatory

Remote source: Non-commercial independent facility

Description

Next one from the Sharpless catalogue of faint nebulae.
It's not a common object, and of course... it's faint.
Sh2-170 is an emission nebula in Cassiopeia at around 7500 light years away.
Always taken pictures of the past, something that happened 7500 year a go and now arrive to the earth.
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.

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