Sharpless 200


Dan Crowson
 

Sharpless 200 (LBN 674, PK 138+04 1, PN HDW 2 (Hartl-Dengl-Weinberger 2), PN HeWe 2 and others) is an old planetary nebula located in Cassiopeia.

 

Ha – 34x1800s – 1020 minutes – binned 1x1

RGB – 8x300s – 40 minutes each – binned 2x2

 

1140 minutes total exposure – 19 hours

 

Imaged over seven nights in November, 2019 and January and December, 2020 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.

 

HaRGB - https://www.flickr.com/photos/dcrowson/51704407181/sizes/l/

 

This target would probably benefit from OIII. It is very faint in Ha.

 

Dan

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

 


MJ Post
 

Dan - Yes, the Bear Claw is very faint in H-alpha.  I posted a similar image, but HOO, on Nov. 5 that shows much more O III light than H-alpha for this planetary.  I'm surprised Sharpless found enough H-light here to warrant a catalog number!

MJ

On 11/25/2021 11:09 AM Dan Crowson <dcrowson@...> wrote:


Sharpless 200 (LBN 674, PK 138+04 1, PN HDW 2 (Hartl-Dengl-Weinberger 2), PN HeWe 2 and others) is an old planetary nebula located in Cassiopeia.


Ha – 34x1800s – 1020 minutes – binned 1x1

RGB – 8x300s – 40 minutes each – binned 2x2


1140 minutes total exposure – 19 hours


Imaged over seven nights in November, 2019 and January and December, 2020 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.


HaRGB - https://www.flickr.com/photos/dcrowson/51704407181/sizes/l/


This target would probably benefit from OIII. It is very faint in Ha.


Dan

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



Gregg Ruppel
 

Nice capture of a very faint target.  Thanks for sharing.

Gregg

Visit my astronomy & astrophotography site
www.greggsastronomy.com

On Nov 25, 2021, at 11:09 AM, Dan Crowson <dcrowson@...> wrote:



Sharpless 200 (LBN 674, PK 138+04 1, PN HDW 2 (Hartl-Dengl-Weinberger 2), PN HeWe 2 and others) is an old planetary nebula located in Cassiopeia.

 

Ha – 34x1800s – 1020 minutes – binned 1x1

RGB – 8x300s – 40 minutes each – binned 2x2

 

1140 minutes total exposure – 19 hours

 

Imaged over seven nights in November, 2019 and January and December, 2020 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.

 

HaRGB - https://www.flickr.com/photos/dcrowson/51704407181/sizes/l/

 

This target would probably benefit from OIII. It is very faint in Ha.

 

Dan

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