Abell 7


Dan Crowson
 

Abell 7 (PN A66 7, PN G215.5-30.8, PK 215-30.1 and others) is a faint planetary nebula located approximately 1614 light-years away (Gaia DR2) in Lepus. I found several mentions of the planetary being approximately 20,000 years old with the central star being 10 billion but I couldn’t find any cited papers. From a southern hemisphere site, this would be a good target for narrowband because it seems to be bright in OIII as well as Ha.

 

Luminance – 12x900s – 180 minutes – binned 1x1

RGB – 6x600s – 60 minutes each – binned 2x2

 

360 minutes total exposure – 6 hours

 

Imaged on January 11th and 12th, 2021 from Dark Sky New Mexico at Rancho Hidalgo (Animas, New Mexico) with a SBIG ST-8300M on an Astro-Tech AT90EDT at f/6.7 603mm.

 

LRGB - https://www.flickr.com/photos/dcrowson/50870743423/sizes/l/

 

Dan

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

 


Gregg Ruppel
 

This little guy is really faint; I’m surprised you captured as much as you did with your refractor. Thanks for sharing.

Gregg

Visit my astronomy & astrophotography site
www.greggsastronomy.com

On Jan 24, 2021, at 1:24 PM, Dan Crowson <dcrowson@...> wrote:



Abell 7 (PN A66 7, PN G215.5-30.8, PK 215-30.1 and others) is a faint planetary nebula located approximately 1614 light-years away (Gaia DR2) in Lepus. I found several mentions of the planetary being approximately 20,000 years old with the central star being 10 billion but I couldn’t find any cited papers. From a southern hemisphere site, this would be a good target for narrowband because it seems to be bright in OIII as well as Ha.

 

Luminance – 12x900s – 180 minutes – binned 1x1

RGB – 6x600s – 60 minutes each – binned 2x2

 

360 minutes total exposure – 6 hours

 

Imaged on January 11th and 12th, 2021 from Dark Sky New Mexico at Rancho Hidalgo (Animas, New Mexico) with a SBIG ST-8300M on an Astro-Tech AT90EDT at f/6.7 603mm.

 

LRGB - https://www.flickr.com/photos/dcrowson/50870743423/sizes/l/

 

Dan

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

 


Brian Ottum
 

Faint but colorful

 

From: DarkSkyNewMexico@groups.io <DarkSkyNewMexico@groups.io> On Behalf Of Dan Crowson
Sent: Sunday, January 24, 2021 3:24 PM
To: 'Dan Crowson' <dcrowson@...>
Subject: [DarkSkyNewMexico] Abell 7

 

Abell 7 (PN A66 7, PN G215.5-30.8, PK 215-30.1 and others) is a faint planetary nebula located approximately 1614 light-years away (Gaia DR2) in Lepus. I found several mentions of the planetary being approximately 20,000 years old with the central star being 10 billion but I couldn’t find any cited papers. From a southern hemisphere site, this would be a good target for narrowband because it seems to be bright in OIII as well as Ha.

 

Luminance – 12x900s – 180 minutes – binned 1x1

RGB – 6x600s – 60 minutes each – binned 2x2

 

360 minutes total exposure – 6 hours

 

Imaged on January 11th and 12th, 2021 from Dark Sky New Mexico at Rancho Hidalgo (Animas, New Mexico) with a SBIG ST-8300M on an Astro-Tech AT90EDT at f/6.7 603mm.

 

LRGB - https://www.flickr.com/photos/dcrowson/50870743423/sizes/l/

 

Dan

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