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Contains:  The star 10Cas
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Sharpless 2-170 in Cassiopeia - HaOIII_RGB

Technical card

Resolution: 3178x2206

Dates:Oct. 9, 2018

Astrodon Tru-Balance LRGB E-Series Gen 2 Blue: 12x600" bin 1x1
Astrodon Tru-Balance LRGB E-Series Gen 2 Green: 12x600" bin 1x1
Astrodon Ha 5nm: 17x1200" bin 1x1
Astrodon OIII 5nm: 18x1200" bin 1x1
Astrodon Tru-Balance LRGB E-Series Gen 2 Red: 12x600" bin 1x1

Integration: 17.7 hours

Avg. Moon age: 0.38 days

Avg. Moon phase: 0.16% job: 2329271

RA center: 0.668 degrees

DEC center: 64.938 degrees

Pixel scale: 2.095 arcsec/pixel

Orientation: 269.659 degrees

Field radius: 1.126 degrees

Locations: E-EyE, Fregenal de la Sierra, Extremadura, Spain

Data source: Unknown


Sharpless 2-170 (sometimes referred to as the Little Rosette Nebula) is an emission nebula that is around 7,500 light years away in the constellation of Cassiopeia.

Sh 2-170 was imaged between 5 and 9 October 2018 from two remote imaging rigs in Spain that are owned and operated by Barry Wilson and me. In addition to gathering SHO data for a 'Hubble Palette' image, RG & B data were collected. This is a HaOIII_RGB image with Ha mapped to the Red channel and OIII mapped to the Green and Blue channels.

Capture details are as follows:

Telescopes: Takahashi FSQ 106 x2
Camera: QSI 683 WSG x2
Filters: Astrodon & Astronomik 5nm & 6nm NB
Mount: 10 Micron GM1000HPS & 10 Micron GM2000HPS

Ha: 17 x 1200s
OIII: 18 x 1200s
Red: 12 x 600s
Green: 12 x 600s
Blue: 12 x 600s

A total of 17 hours 40 minutes exposure.

Data Capture: Steve Milne & Barry Wilson
Image Processing: Steve Milne



Steve Milne
License: None (All rights reserved)

Sky plot

Sky plot


Sharpless 2-170 in Cassiopeia - HaOIII_RGB, 


            Steve Milne