Sh2-188 in Cassiopeia

Sh2-188 in Cassiopeia - Astrophotography - Martin Rusterholz

The image is of Sharp­less 2–188 (Sh2-188), an unusu­al plan­et­ary neb­ula loc­ated in the con­stel­la­tion Cas­si­opeia. The expand­ing gas from the plan­et­ary neb­ula is col­lid­ing with ambi­ent gas in the inter­stel­lar medi­um. The neb­ula is nearly cir­cu­lar in shape but is much bright­er to the south­east (lower right) because the cent­ral star is mov­ing rap­idly in that dir­ec­tion. Faint wisps of gas can also be seen in the oppos­ite dir­ec­tion. The cent­ral star is blueish start just below the bright orange star in the cen­ter of the nebula.

Details

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RCOS 14.5″ f/​8
ASA DDM85
Andor CG16M
Astro­don Gen2
HaOIIIR­GB 760:1000:280:260:240 min.
ROSA Remote Obser­vat­or­ies South­ern Alps
© Mar­tin Ruster­holz, Astrophotographer

Find­er Chart Sh2-188 in Cassiopeia

M15 in Pegasus Sky Chart Astrophotography Martin Rusterholz

Image cre­ated by Skychart