M52, the Bubble, and lots going on at the border of Cassiopeia and Cepheus (Robin Livermore)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: 1 Cas · 2 Cas · 4 Cas · Bubble Nebula · HD217943 · HD218067 · HD218229 · HD218375 · HD218439 · HD218440 · HD218997 · HD219286 · HD219287 · HD219460 · HD219634 · HD219854 · HD220016 · HD220056 · HD220057 · HD220074 · HD220102 · HD220130 · HD220147 · HD220167 · HD220180 · HD220369 · HD220760 · HD220770 · HD220819 · HD220999 · And 69 more.

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M52, the Bubble, and lots going on at the border of Cassiopeia and Cepheus

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M52, the Bubble, and lots going on at the border of Cassiopeia and Cepheus

This is another ticked off my list of broadband targets that are more often imaged in narrowband. I went for a 2 panel mosaic to get a nice squarish field around the central targets of M52, the bubble nebula and companions, and to provide a reach from Sharpless 2-153 on the left to 2-156 (IC1470) on the right.

There's so much going on in this field, plenty of which is uncatalogued. As well as M52 there is the smaller open cluster NGC7510 to the lower right, lots of emission nebulosity (I can count five Sharpless catalogue objects as well as others), lots of dust and quite a few areas of reflection nebulosity. And then near the centre, that strange bubble-like planetary nebula NGC 7635.

I've tried to bring out the details without overdoing it, and to contain the brightest areas as best I can. The stars are obviously pared back, but I also wanted them to take a full part in the image ( if you look too closely at the stars, you'll find a bit of flaring, probably caused by the obstructions in the light path of the RASA).

Original
Final
B

B

Description: tone down brighter areas

Uploaded: ...

ZWO ASI2400MC Users
Sharpless2 Objects
Celestron RASA

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Status	Advanced success
Started	...
Astrometry.net job	8881106
PixInsight job	RMA31L79U8GT33KW8DJZ9FTRW3F7JH1V
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	23h18m56s.14
RA (top/left)	23h35m38s.55
RA (top/right)	23h01m36s.51
RA (bottom/right)	23h03m55s.89
RA (bottom/left)	23h34m34s.37

Dec (center)	+60°57′00″.2
Dec (top/left)	+62°33′38″.5
Dec (top/right)	+62°27′47″.5
Dec (bottom/right)	+59°13′19″.7
Dec (bottom/left)	+59°18′32″.2

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M52, the Bubble, and lots going on at the border of Cassiopeia and Cepheus

M52, the Bubble, and lots going on at the border of Cassiopeia and Cepheus

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M52, the Bubble, and lots going on at the border of Cassiopeia and Cepheus

M52, the Bubble, and lots going on at the border of Cassiopeia and Cepheus

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