Sh2-188 Dolphin Nebula
Sh2-188 Dolphin Nebula TriColor & BiColor
Sh2-188 also known as PNG128.0-4.1 and Simeis22 The Dolphin Nebula in the constellation Cassiopeia is a planetary nebula. It is approxmiatly 850 light years from Earth This an asymmetrical shaped planetary nebula.
Crop
BiColor Version
Crop
Sh2-188 20min Ha Subframe
Sh2-188 20min Ha Subframes x 22 = 440 min combined image
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Sh2-188 20min OIII Subframe
Sh2-188 20min OIII Subframes x 13 = 260 min combined image
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Sh2-188 20min SII Subframe
Sh2-188 20min SII Subframes x 13 = 260 min combined image
Scope TMB130mm
Camera Apogee U8300
Mount Atlas EQG
Filters Astrodon Ha5nm OIII3nm SII3nm
Exposures Ha 7.3hrs OIII 4.3hrs SII 4.3hrs 20min subs Total 16hrs
Location Connellsville Pa. Home Observatory 2012