Date   
Comet 68P/Klemola

Dan Crowson
 

Comet 68P/Klemola was mentioned as being visible and brighter than 11th magnitude with a bright moon. Unfortunately, this was a mistake or a short-lived outburst. Photometry on the exposures that make up this short video show it to be at magnitude 15.3.

 

68P/Klemola

2019-09-18 - Animas, NM

03:10:07 - 03:39:24 UTC

Astro-Tech AT12RCT - SBIG STF-8300M

Luminance:  15x120s binned 2x2

 

https://www.flickr.com/photos/dcrowson/48770992267

 

See Gregg Ruppel’s image taken at the same time here - http://www.greggsastronomy.com/Comet%2068P%20Klemola.html.

 

Dan

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

 

Re: Leo Triplet 4 panel mosaic

Madhup Rathi
 

Thanks, Bernard.

 

From: DarkSkyNewMexico@groups.io [mailto:DarkSkyNewMexico@groups.io] On Behalf Of Bernard Miller
Sent: Tuesday, September 17, 2019 7:03 PM
To: DarkSkyNewMexico@groups.io
Subject: Re: [DarkSkyNewMexico] Leo Triplet 4 panel mosaic

 

Madhup,

 

Really beautiful image. Great job on the mosaic. Not a seam anywhere. You would never know it is not a single image.

 

Bernard

 

 

From: DarkSkyNewMexico@groups.io On Behalf Of Madhup Rathi
Sent: Sunday, September 15, 2019 7:40 PM
To: DarkSkyNewMexico@groups.io
Subject: [DarkSkyNewMexico] Leo Triplet 4 panel mosaic

 

A 4 panel mosaic. Each set was taken for 14 luminance image of 20 minutes each and supplemented with 7 images each of 20 minutes of each color, thereby accumulating data for each part of the 4-part panel for 8 hours, for a total of 32 hours on this image.

 

 

 


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Re: Leo Triplet 4 panel mosaic

Bernard Miller
 

Madhup,

 

Really beautiful image. Great job on the mosaic. Not a seam anywhere. You would never know it is not a single image.

 

Bernard

 

 

From: DarkSkyNewMexico@groups.io On Behalf Of Madhup Rathi
Sent: Sunday, September 15, 2019 7:40 PM
To: DarkSkyNewMexico@groups.io
Subject: [DarkSkyNewMexico] Leo Triplet 4 panel mosaic

 

A 4 panel mosaic. Each set was taken for 14 luminance image of 20 minutes each and supplemented with 7 images each of 20 minutes of each color, thereby accumulating data for each part of the 4-part panel for 8 hours, for a total of 32 hours on this image.

 

 




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Re: Leo Triplet 4 panel mosaic

Dan Crowson
 

Madhup,

 

I noticed after posting that most of your images are biased to blue/purple. I’m guessing that is your style.

 

Thanks for posting,

Dan

 

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

 

From: DarkSkyNewMexico@groups.io [mailto:DarkSkyNewMexico@groups.io] On Behalf Of Madhup Rathi
Sent: Monday, September 16, 2019 10:53 PM
To: DarkSkyNewMexico@groups.io
Subject: Re: [DarkSkyNewMexico] Leo Triplet 4 panel mosaic

 

Thanks Dan. I thought galaxies look good like that.

 

From: DarkSkyNewMexico@groups.io [mailto:DarkSkyNewMexico@groups.io] On Behalf Of Dan Crowson
Sent: Sunday, September 15, 2019 11:08 PM
To: DarkSkyNewMexico@groups.io
Subject: Re: [DarkSkyNewMexico] Leo Triplet 4 panel mosaic

 

Madhup,

 

Excellent detail and composition.

 

The color looks a little purple?

Dan

 

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

 

From: DarkSkyNewMexico@groups.io [mailto:DarkSkyNewMexico@groups.io] On Behalf Of Madhup Rathi
Sent: Sunday, September 15, 2019 9:40 PM
To: DarkSkyNewMexico@groups.io
Subject: [DarkSkyNewMexico] Leo Triplet 4 panel mosaic

 

A 4 panel mosaic. Each set was taken for 14 luminance image of 20 minutes each and supplemented with 7 images each of 20 minutes of each color, thereby accumulating data for each part of the 4-part panel for 8 hours, for a total of 32 hours on this image.

 

 

Re: Leo Triplet 4 panel mosaic

Madhup Rathi
 

Thanks Dan. I thought galaxies look good like that.

 

From: DarkSkyNewMexico@groups.io [mailto:DarkSkyNewMexico@groups.io] On Behalf Of Dan Crowson
Sent: Sunday, September 15, 2019 11:08 PM
To: DarkSkyNewMexico@groups.io
Subject: Re: [DarkSkyNewMexico] Leo Triplet 4 panel mosaic

 

Madhup,

 

Excellent detail and composition.

 

The color looks a little purple?

Dan

 

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

 

From: DarkSkyNewMexico@groups.io [mailto:DarkSkyNewMexico@groups.io] On Behalf Of Madhup Rathi
Sent: Sunday, September 15, 2019 9:40 PM
To: DarkSkyNewMexico@groups.io
Subject: [DarkSkyNewMexico] Leo Triplet 4 panel mosaic

 

A 4 panel mosaic. Each set was taken for 14 luminance image of 20 minutes each and supplemented with 7 images each of 20 minutes of each color, thereby accumulating data for each part of the 4-part panel for 8 hours, for a total of 32 hours on this image.

 

 

Re: Leo Triplet 4 panel mosaic

Brian Ottum
 

Great colors and detail.

 

From: DarkSkyNewMexico@groups.io [mailto:DarkSkyNewMexico@groups.io] On Behalf Of Madhup Rathi
Sent: Sunday, September 15, 2019 10:40 PM
To: DarkSkyNewMexico@groups.io
Subject: [DarkSkyNewMexico] Leo Triplet 4 panel mosaic

 

A 4 panel mosaic. Each set was taken for 14 luminance image of 20 minutes each and supplemented with 7 images each of 20 minutes of each color, thereby accumulating data for each part of the 4-part panel for 8 hours, for a total of 32 hours on this image.

 

 

Re: Leo Triplet 4 panel mosaic

Dan Crowson
 

Madhup,

 

Excellent detail and composition.

 

The color looks a little purple?

Dan

 

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

 

From: DarkSkyNewMexico@groups.io [mailto:DarkSkyNewMexico@groups.io] On Behalf Of Madhup Rathi
Sent: Sunday, September 15, 2019 9:40 PM
To: DarkSkyNewMexico@groups.io
Subject: [DarkSkyNewMexico] Leo Triplet 4 panel mosaic

 

A 4 panel mosaic. Each set was taken for 14 luminance image of 20 minutes each and supplemented with 7 images each of 20 minutes of each color, thereby accumulating data for each part of the 4-part panel for 8 hours, for a total of 32 hours on this image.

 

 

Leo Triplet 4 panel mosaic

Madhup Rathi
 

A 4 panel mosaic. Each set was taken for 14 luminance image of 20 minutes each and supplemented with 7 images each of 20 minutes of each color, thereby accumulating data for each part of the 4-part panel for 8 hours, for a total of 32 hours on this image.

 

 

Re: NGC 6752

Gregg Ruppel
 

Nicely processed! Thanks for sharing.

Gregg

Visit my astronomy & astrophotography site

On Sep 14, 2019, at 1:22 PM, Bernard Miller <bgmiller011@...> wrote:

Hi,

 

This is NGC 6752. It is globular cluster about 13,000 light years away in the constellation Pavo. It is the third brightest globular cluster in the sky behind Omega Centauri and 47 Tucanae. It holds over 100,000 stars in a sphere about 100 light years in diameter.

 

Comments and suggestion appreciated.

 

http://www.azstarman.net/CDK/NGC6752.htm

 

Thanks,

 

Bernard

 


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NGC 6752

Bernard Miller
 

Hi,

 

This is NGC 6752. It is globular cluster about 13,000 light years away in the constellation Pavo. It is the third brightest globular cluster in the sky behind Omega Centauri and 47 Tucanae. It holds over 100,000 stars in a sphere about 100 light years in diameter.

 

Comments and suggestion appreciated.

 

http://www.azstarman.net/CDK/NGC6752.htm

 

Thanks,

 

Bernard

 


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Re: Arp 171

Bernard Miller
 

Nice work Dan. It looks like a pair of eyes looking back at you.

 

Bernard

 

 

From: DarkSkyNewMexico@groups.io On Behalf Of Dan Crowson
Sent: Tuesday, September 10, 2019 3:30 PM
To: 'Dan Crowson' <dcrowson@...>
Subject: [DarkSkyNewMexico] Arp 171

 

Arp 171 consists of NGC 5718 (UGC 9459 and others) at the center interacting with IC 1042 (UGC 9457 and others) above and to the right. Located approximately 390 million light-years away in Virgo, these are in Arp’s ‘Galaxies with diffuse counter-tails’ class. I’m not sure if he was talking about the faint plumes to the bottom left or something else.

 

Luminance – 24x600s – 240 minutes – binned 1x1

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

 

360 minutes total exposure – 6 hours

 

Imaged May 25th and June 5th, 6th, 19th, 20th and 22nd, 2019 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/48712053026/sizes/l

 

Dan

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

 


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Arp 171

Dan Crowson
 

Arp 171 consists of NGC 5718 (UGC 9459 and others) at the center interacting with IC 1042 (UGC 9457 and others) above and to the right. Located approximately 390 million light-years away in Virgo, these are in Arp’s ‘Galaxies with diffuse counter-tails’ class. I’m not sure if he was talking about the faint plumes to the bottom left or something else.

 

Luminance – 24x600s – 240 minutes – binned 1x1

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

 

360 minutes total exposure – 6 hours

 

Imaged May 25th and June 5th, 6th, 19th, 20th and 22nd, 2019 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/48712053026/sizes/l

 

Dan

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

 

Re: NGC 6188 - The Great Wall of Ara (Narrowband using Hubble Palette)

Howard Anderson
 

Hi Bernard,
Absolutely beautiful!
Thanks,
Howard

On 9/7/2019 17:42, Bernard Miller wrote:

Hi,

 

This is NGC 6188, also known as the Great Wall of Ara. It is an emission nebula and star forming region about 4,000 light years away in the constellation Ara. Just above the wall in the picture is the open cluster NGC 6193. This cluster is an infant in Astronomical terms being a mere 1 -3 million years old. The stars in this cluster are largely responsible for the emission nebula. The nebula spans about 600 light years.

 

Comments and suggestion appreciated.

 

http://www.azstarman.net/CDK/NGC6188_NB.htm

 

Thanks,

 

Bernard

 


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Arp 73

Dan Crowson
 

Arp 73 consists of IC 1222 (UGC 10461 and others) the spiral at the bottom of the image and SDSS J163514.15+461232.6, the ‘Companion on arms’ on the left side. These are located approximately 440 million light-years away in Hercules.

 

IC 2221 (UGC 10468 and others) is the spiral near the top of the image. Much like Arp 73, this one also has a companion in SDSS J163440.40+462402.4.

 

Luminance – 24x600s – 240 minutes – binned 1x1

RGB – 8:12:8x300s – 40:60:40 minutes each – binned 2x2

 

380 minutes total exposure – 6 hours 20 minutes

 

Imaged May 23rd, 26th, 27th, 28th and 29th, 2019 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/48702822826/sizes/l

 

Dan

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

 

Re: NGC 6188 - The Great Wall of Ara (Narrowband using Hubble Palette)

Brian Ottum
 

So cool to see new stuff, and so well done!

Brian

 

 

From: DarkSkyNewMexico@groups.io [mailto:DarkSkyNewMexico@groups.io] On Behalf Of Bernard Miller
Sent: Saturday, September 07, 2019 8:42 PM
To: DarkSkyNewMexico@groups.io
Subject: [DarkSkyNewMexico] NGC 6188 - The Great Wall of Ara (Narrowband using Hubble Palette)

 

Hi,

 

This is NGC 6188, also known as the Great Wall of Ara. It is an emission nebula and star forming region about 4,000 light years away in the constellation Ara. Just above the wall in the picture is the open cluster NGC 6193. This cluster is an infant in Astronomical terms being a mere 1 -3 million years old. The stars in this cluster are largely responsible for the emission nebula. The nebula spans about 600 light years.

 

Comments and suggestion appreciated.

 

http://www.azstarman.net/CDK/NGC6188_NB.htm

 

Thanks,

 

Bernard

 

 

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NGC 6188 - The Great Wall of Ara (Narrowband using Hubble Palette)

Bernard Miller
 

Hi,

 

This is NGC 6188, also known as the Great Wall of Ara. It is an emission nebula and star forming region about 4,000 light years away in the constellation Ara. Just above the wall in the picture is the open cluster NGC 6193. This cluster is an infant in Astronomical terms being a mere 1 -3 million years old. The stars in this cluster are largely responsible for the emission nebula. The nebula spans about 600 light years.

 

Comments and suggestion appreciated.

 

http://www.azstarman.net/CDK/NGC6188_NB.htm

 

Thanks,

 

Bernard

 


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Berkeley 53

Dan Crowson
 

Berkeley 53 is a trumpler (https://en.wikipedia.org/wiki/Trumpler_classification) class III 2 m open cluster located approximately 10,100 light-years away in Cygnus. More information can be found in a paper here - https://arxiv.org/abs/0908.2950.

 

Luminance – 12x300s – binned 1x1 – 60 minutes

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

 

132 minutes total exposure – 2 hours 12 minutes

 

Imaged September 3rd and 4th, 2019 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/48684044968/sizes/l

 

Dan

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

 

Re: M2

Bernard Miller
 

Dan,

 

Nice job. Good resolution in the core.

 

Bernard

 

 

From: DarkSkyNewMexico@groups.io On Behalf Of Dan Crowson
Sent: Wednesday, September 4, 2019 3:31 PM
To: 'Dan Crowson' <dcrowson@...>
Subject: [DarkSkyNewMexico] M2

 

M2 (NGC 7089) is a Shapley-Sawyer class II (http://en.wikipedia.org/wiki/Shapley%E2%80%93Sawyer_Concentration_Class) globular cluster located approximately 37,500 light-years away in Aquarius.

 

Luminance – 24x600s – 240 minutes – binned 1x1

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

 

360 minutes total exposure – 6 hours

 

Imaged August 26th and 31st and September 3rd, 2019 from 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/48679492132/sizes/l

 

Also see my previous 600mm refractor image here - https://www.flickr.com/photos/dcrowson/28882776594.

 

Dan

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

 


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Re: M2

Brian Ottum
 

I like the blue stragglers

 

From: DarkSkyNewMexico@groups.io [mailto:DarkSkyNewMexico@groups.io] On Behalf Of Dan Crowson
Sent: Wednesday, September 04, 2019 6:31 PM
To: 'Dan Crowson' <dcrowson@...>
Subject: [DarkSkyNewMexico] M2

 

M2 (NGC 7089) is a Shapley-Sawyer class II (http://en.wikipedia.org/wiki/Shapley%E2%80%93Sawyer_Concentration_Class) globular cluster located approximately 37,500 light-years away in Aquarius.

 

Luminance – 24x600s – 240 minutes – binned 1x1

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

 

360 minutes total exposure – 6 hours

 

Imaged August 26th and 31st and September 3rd, 2019 from 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/48679492132/sizes/l

 

Also see my previous 600mm refractor image here - https://www.flickr.com/photos/dcrowson/28882776594.

 

Dan

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

 

M2

Dan Crowson
 

M2 (NGC 7089) is a Shapley-Sawyer class II (http://en.wikipedia.org/wiki/Shapley%E2%80%93Sawyer_Concentration_Class) globular cluster located approximately 37,500 light-years away in Aquarius.

 

Luminance – 24x600s – 240 minutes – binned 1x1

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

 

360 minutes total exposure – 6 hours

 

Imaged August 26th and 31st and September 3rd, 2019 from 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/48679492132/sizes/l

 

Also see my previous 600mm refractor image here - https://www.flickr.com/photos/dcrowson/28882776594.

 

Dan

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