Berkeley 7


Dan Crowson
 

Berkeley 7 is a trumpler (https://en.wikipedia.org/wiki/Trumpler_classification) class III 2 p open cluster located approximately 7175 light-years away in Cassiopeia.

 

Luminance – 24x300s – binned 1x1 – 120 minutes

RGB – 8x180s – 24 minutes each – binned 2x2

 

182 minutes total exposure – 3 hours 2 minutes

 

Imaged December 11th, 2021 from Dark Sky New Mexico at Rancho Hidalgo (Animas, New Mexico) with a SBIG STF-8300M on an Astro-Tech AT12RCT at f/8 2432mm.

 

LRGB - https://www.flickr.com/photos/dcrowson/51821572367/sizes/l/

 

Dan

----          
Dan Crowson                          dcrowson@...
Dardenne Prairie MO               http://www.crowson.com

 


Gregg Ruppel
 

A nice addition to your Berkeley collection!  Thanks for sharing.
Clear skies,

Gregg
Visit my astronomy & astrophotography site
http://www.greggsastronomy.com/
On 1/15/2022 1:15 PM, Dan Crowson wrote:

Berkeley 7 is a trumpler (https://en.wikipedia.org/wiki/Trumpler_classification) class III 2 p open cluster located approximately 7175 light-years away in Cassiopeia.

 

Luminance – 24x300s – binned 1x1 – 120 minutes

RGB – 8x180s – 24 minutes each – binned 2x2

 

182 minutes total exposure – 3 hours 2 minutes

 

Imaged December 11th, 2021 from Dark Sky New Mexico at Rancho Hidalgo (Animas, New Mexico) with a SBIG STF-8300M on an Astro-Tech AT12RCT at f/8 2432mm.

 

LRGB - https://www.flickr.com/photos/dcrowson/51821572367/sizes/l/

 

Dan

----          
Dan Crowson                          dcrowson@...
Dardenne Prairie MO               http://www.crowson.com

 



Bernard Miller
 

Beautiful Dan. This one does not have as many red stars as some of the others.

 

Bernard

 

 

From: DarkSkyNewMexico@groups.io On Behalf Of Dan Crowson
Sent: Saturday, January 15, 2022 1:15 PM
To: 'Dan Crowson' <dcrowson@...>
Subject: [DarkSkyNewMexico] Berkeley 7

 

Berkeley 7 is a trumpler (https://en.wikipedia.org/wiki/Trumpler_classification) class III 2 p open cluster located approximately 7175 light-years away in Cassiopeia.

 

Luminance – 24x300s – binned 1x1 – 120 minutes

RGB – 8x180s – 24 minutes each – binned 2x2

 

182 minutes total exposure – 3 hours 2 minutes

 

Imaged December 11th, 2021 from Dark Sky New Mexico at Rancho Hidalgo (Animas, New Mexico) with a SBIG STF-8300M on an Astro-Tech AT12RCT at f/8 2432mm.

 

LRGB - https://www.flickr.com/photos/dcrowson/51821572367/sizes/l/

 

Dan

----          
Dan Crowson                          dcrowson@...
Dardenne Prairie MO               http://www.crowson.com

 




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