Abell 35 - A Stromgren Sphere (Logan Carpenter)

Celestial hemisphere: Southern · Constellation: Hydra (Hya) · Contains: HD111865 · HD112039 · PK303+40.1 · Sh2-313

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Abell 35 - A Stromgren Sphere

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Abell 35 - A Stromgren Sphere

While looking for a planetary nebula to image that would be of reasonable size for my Skywatcher 120, I came across Abell35 and although having a very low surface brightness, I thought it might be a good challenging object. I had never heard of a Stromgren sphere until I started reading about this target and was surprised to read that the Rosette nebula was also an example of a Stromgren sphere. I also thought the "bow wave" in front and wrapping around the sides of the central star was also an interesting feature.

This is most integration time I have spent on an object so far and after seeing the individual 20 min Ha and OIII subs, I was concerned that I would have little to show for all the time spent but was pleasantly surprised by the amount of detail I was able to capture.

Original
Final
B

New Zealand Astrophotography
Southern Hemisphere Astro

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Status	Advanced success
Started	...
PixInsight job	FEJEVDGL9MR757I40BFW6FTK5ZHIQH57
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	12h53m33s.20
RA (top/left)	12h55m23s.30
RA (top/right)	12h55m11s.77
RA (bottom/right)	12h51m43s.68
RA (bottom/left)	12h51m53s.61

Dec (center)	-22°51′11″.10
Dec (top/left)	-23°23′41″.7
Dec (top/right)	-22°16′52″.6
Dec (bottom/right)	-22°18′37″.8
Dec (bottom/left)	-23°25′28″.5

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Abell 35 - A Stromgren Sphere

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