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Sharpless 188, 


            Peter Goodhew
Sharpless 188

Sharpless 188

Technical card

Resolution: 3973x2345

Dates:Aug. 15, 2018

Astrodon 5nm H-Alpha filter: 32x1200" bin 1x1
Astrodon 5nm H-Alpha filter: 10x1800" bin 4x4
Astrodon Blue: 10x300" bin 1x1
Astrodon Green: 10x300" bin 1x1
Astrodon OIII 3 nm: 12x1200" bin 1x1
Astrodon OIII 3 nm: 3x1800" bin 4x4
Astrodon Red: 10x300" bin 1x1

Integration: 23.7 hours

Avg. Moon age: 4.57 days

Avg. Moon phase: 21.87% job: 2209908

RA center: 22.679 degrees

DEC center: 58.374 degrees

Pixel scale: 0.533 arcsec/pixel

Orientation: 110.016 degrees

Field radius: 0.342 degrees

Locations: e-Eye, Fregenal de la Sierra, Extramadura, Spain

Data source: Own remote observatory

Remote source: IC Astronomy Observatories


Sharpless 2-188, also known as Simeis 22 or the Dolphin Nebula. I found this very faint, so ended up shooting some Ha and OIII subs at bin 4x4 for 30 minutes. Processed in CCDStack and Photoshop CS2.



Peter Goodhew
License: None (All rights reserved)

Sky plot

Sky plot


Sharpless 188, 


            Peter Goodhew