NGC 7331 + Stephan Quintet mosaic

[Dan_Paris]

  Hi,

sorry  for not being original but this is one of the showpieces of the season! This is actually a project that started last year. My plan was to do a two-panel mosaic of NGC7331 and the Quintet but unfortunately seeing was very bad for NGC7331 in 2022. Last night the seeing conditions were rather good over Paris so I shot new luminance data. Quality of both panels is now roughly the same: 1.9" vs. 1.75" in terms of FWHM and m=21.1 vs. m=20.9 in terms of limiting magnitude.

For each panel there is about 5 hours of luminance and 30 min for each color filter, shot from my Bortle 7 backyard near Paris. The setup consists of a 200/800 Newtonian astrograph on an AP900 mount with an ASI183mm mono camera.

Here's first a crop on NGC7331 and friends

 

A crop on the Quintet

 

And finally the mosaic (right click for the full-resolution, which worth a visit):

 

clear skies,

Dan

 

 

Edited August 23, 2023 by Dan_Paris

[GalaxyGael]

that's a handsome view, with a great 3D rendering of 7331's volume

[Dan_Paris]

Thanks Colm !

 

clear skies,

 

Dan

[peter shah]

Beautiful work...super detail love the fov

[mackiedlm]

Super view. Well done.

 

[ollypenrice]

Beautifully done and from near Paris???  Congratulations!  (I live not too far from where Stéphan discovered the Quintet.)

Olly

[Dan_Paris]

Thanks a lot @peter shah, @mackiedlm and  @ollypenrice !

 

2 hours ago, ollypenrice said:

from near Paris??? 

Yes, 20km precisely.

2 hours ago, ollypenrice said:

I live not too far from where Stéphan discovered the Quintet

Near Marseille ? I guess the Peltier of your cameras have a harsh time these days...

 

 

[ollypenrice]

2 minutes ago, Dan_Paris said:

Thanks a lot @peter shah, @mackiedlm and  @ollypenrice !

 

Yes, 20km precisely.

Near Marseille ? I guess the Peltier of your cameras have a harsh time these days...

 

 

Not too near.  I'm in the 05, Hautes Alples, at 900m altitude but, yes, it's hot.  35C today.  Dark sky, though, which is why I find your image particularly impressive.

Olly

[Dan_Paris]

27 minutes ago, ollypenrice said:

Not too near.  I'm in the 05, Hautes Alples, at 900m altitude but, yes, it's hot.  35C today.  Dark sky, though, which is why I find your image particularly impressive.

Thanks Olly.  That's a dream region for deep sky lovers indeed.