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 Post subject: NGC 7331
PostPosted: Mon Aug 26, 2019 9:25 am 
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Joined: Sun Oct 25, 2009 3:56 pm
Posts: 1321
Location: Caithness
Yay! A clear and successful night imaging. :lol:
Galaxy NGC 7331 is an unbarred spiral galaxy about 40 million light-years away in the constellation Pegasus. It was discovered by William Herschel in 1784. NGC 7331 is the brightest member of the NGC 7331 Group of galaxies. It has a radius of 60,000 light years and contains around 1.4 billion stars.
This was imaged with a Celestron C8 and Starlight Express SXVR-H9C with a 0.5 reducer. 10x300 secs + 3x600 secs.

Image

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BRIAN
Celestron Nexstar 8SE, Ioptron CEM 25P mount
Altair Astro 102 ED refractor with Lunt B600 CaK diagonal
Coronado PST DS, Daystar Quark
ZWO ASI120MM camera, Canon 1000D (astro modified), Starlight Express SXV H9-C.
Gallery: http://www.astrobin.com/users/smerral/


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 Post subject: Re: NGC 7331
PostPosted: Tue Aug 27, 2019 5:51 pm 
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Joined: Fri Dec 03, 2004 9:58 pm
Posts: 3628
Location: Wellingborough
Brian,

Another good'un for your collection 8)

regards,

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Brian
52.3N 0.6W
Wellingborough UK.

254mm LX90 on Superwedge, WO ZS66SD, Helios 102mm f5 on EQ1, Hunter 11x80, Pentax 10x50
ASI120MC Toucam Pros 740k/840k/900nc mono, Pentax K110D
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 Post subject: Re: NGC 7331
PostPosted: Wed Aug 28, 2019 9:03 am 
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Joined: Mon Jan 18, 2010 9:25 am
Posts: 5334
Lovely photo.

It is quite a long time since I last saw this galaxy.

The mass of the galaxy may be as high as 140 billion suns, I think.

A value, perhaps on Wikipedia, gives 1,400 billion suns, but this may be a mistake.

I haven't actually weighed it :)

Regards,
David


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