Hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  Bubble nebula  ·  M 52  ·  NGC 7635  ·  NGC 7654
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Bubble nebula and M52, 


            Salvatore Iovene
Bubble nebula and M52
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Bubble nebula and M52

Acquisition details

Oct. 5, 2011
Avg. Moon age:
8.72 days
Avg. Moon phase:
Bortle Dark-Sky Scale:

RA center: 23h22m31s.9

DEC center: +61°2443

Pixel scale: 2.373 arcsec/pixel

Orientation: -95.118 degrees

Field radius: 0.910 degrees

Resolution: 620x412

File size: 188.8 KB

Locations: Home pier, Espoo, Finland


Only three hours could go into the making of this peculiar portrait, picturing the beautiful Bubble Nebula, aka NGC7635, and the bright open cluster M52.

The Bubble is an area of ionized hydrogen, currently being blown away by the stellar wind of a massive and hot central star, whose mass is believed to be twenty to forty times that of our Sun. The Bubble extends over a diameter of about 10 light-years, lies 11000 light-years away and is a set for very violent and turbulent processes at work.


Sky plot

Sky plot


Bubble nebula and M52, 


            Salvatore Iovene