Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  PK128-04.1  ·  Sh2-188
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Simeis 22 / SH2-188 - The Dolphin Nebula (Bicolor), Frank Breslawski
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Simeis 22 / SH2-188 - The Dolphin Nebula (Bicolor)

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Simeis 22 / SH2-188 - The Dolphin Nebula (Bicolor), Frank Breslawski
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Simeis 22 / SH2-188 - The Dolphin Nebula (Bicolor)

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Description

And finally I also reprocessed my attempt on Simeis 22 (aka Sharpless 188, SH2-188 and the Dolphin Nebula). This time it's more like Hubble colors. Not that easy with only Bicolor data… ;-) This target is an unusual planetary nebula in the galactic disk, approximately 850 light-years away from earth in the northern constellation of Cassiopeia.

I spent around 13 hours for collecting H-Alpha and OIII data for this bicolor.

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Simeis 22 / SH2-188 - The Dolphin Nebula (Bicolor), Frank Breslawski

In these public groups

Narrowband imaging