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.



BiColor Version



 Sh2-188  20min Ha Subframe

Sh2-188 20min Ha Subframes x 22 = 440 min combined image



 Sh2-188  20min OIII Subframe

Sh2-188 20min OIII Subframes x 13 = 260 min combined image



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




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