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Contains:  Sh2-188
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SH2-188, Simeis 22, PK 128.0-04.1, 


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SH2-188, Simeis 22, PK 128.0-04.1

Technical card

Dates:July 19, 2018

Astronomik H Alpha 12 nm 1.25": 10x600" -10C bin 1x1
Astronomik LRGB 1.25" Type IIc: 40x300" -10C bin 1x1
Astronomik O III 12nm 1.25": 8x600" -10C bin 1x1
Astronomik S II 12nm 1.25": 8x600" -10C bin 1x1

Integration: 7.7 hours

Darks: ~-20

Flats: ~140

Bias: ~120

Avg. Moon age: 7.06 days

Avg. Moon phase: 46.60% job: 2160859

RA center: 1h 30' 25"

DEC center: +58° 26' 10"

Pixel scale: 1.149 arcsec/pixel

Orientation: 2.216 degrees

Field radius: 0.332 degrees

Resolution: 1457x1487

Locations: Homeobservatory , Roding, Bayern, Germany

Data source: Backyard


An extraordinary planetary nebula in the constellation Cassiopeia. Since the central star has a very high self-movement, he pushes a shock wave in front of him. The PN was discovered in the Year 1951. The distance is estimated at about 800 light-years.

Data from 17/18/19 July 2018




Sky plot

Sky plot


SH2-188, Simeis 22, PK 128.0-04.1,