FW: M4
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Dan Crowson
This one can be found in the Gallery section (page 26) of the June, 2017 Reflector. The magazine can be found here - https://www.astroleague.org/files/reflector/Reflector%20-%20June%202017_singe%20pgs.pdf.
Also note that fellow Dark Sky New Mexico imager Brian Ottum also has an image on the same page.
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From: Dan Crowson [mailto:dcrowson@...]
Sent: Sunday, May 08, 2016 6:50 PM To: 'Dan Crowson' Subject: M4
M4 (NGC 6121) is a Shapley-Sawyer class IX (http://en.wikipedia.org/wiki/Shapley%E2%80%93Sawyer_Concentration_Class) globular cluster located approximately 7,200 light-years away in Scorpius. It is easy to find in the sky because it is just over a degree away from the bright (magnitude ~1) star Antares (bottom right in the image).
NGC 6144 is the class XI globular at the top right.
Luminance – 12x600s – 120 minutes – binned 1x1 RGB – 8x300s – 40 minutes each – binned 2x2
240 minutes total exposure – 4 hours
Imaged on April 4th and 8th, 2016 at the Danville Conservation Area (New Florence, Missouri) with a SBIG ST-8300M on an Astro-Tech AT90EDT at f/6.7 603mm.
LRGB - https://www.flickr.com/photos/dcrowson/26627906420/sizes/l
Dan ----
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Eric Africa <eja24601@...>
Congrats Dan and Brian!
From: DarkSkyNewMexico@... on behalf of 'Dan Crowson' dcrowson@... [DarkSkyNewMexico]
Sent: Monday, June 19, 2017 8:52 PM To: 'Dan Crowson' Subject: [DarkSkyNewMexico] FW: M4 This one can be found in the Gallery section (page 26) of the June, 2017 Reflector. The magazine can be found here - https://www.astroleague.org/files/reflector/Reflector%20-%20June%202017_singe%20pgs.pdf.
Also note that fellow Dark Sky New Mexico imager Brian Ottum also has an image on the same page.
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From: Dan Crowson [mailto:dcrowson@...]
M4 (NGC 6121) is a Shapley-Sawyer class IX (http://en.wikipedia.org/wiki/Shapley%E2%80%93Sawyer_Concentration_Class) globular cluster located approximately 7,200 light-years away in Scorpius. It is easy to find in the sky because it is just over a degree away from the bright (magnitude ~1) star Antares (bottom right in the image).
NGC 6144 is the class XI globular at the top right.
Luminance – 12x600s – 120 minutes – binned 1x1 RGB – 8x300s – 40 minutes each – binned 2x2
240 minutes total exposure – 4 hours
Imaged on April 4th and 8th, 2016 at the Danville Conservation Area (New Florence, Missouri) with a SBIG ST-8300M on an Astro-Tech AT90EDT at f/6.7 603mm.
LRGB - https://www.flickr.com/photos/dcrowson/26627906420/sizes/l
Dan ----
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Bernard Miller
Congratulations to both of you. Nice images, both.
Bernard
From: DarkSkyNewMexico@... [mailto:DarkSkyNewMexico@...]
Sent: Monday, June 19, 2017 5:52 PM To: 'Dan Crowson' Subject: [DarkSkyNewMexico] FW: M4
This one can be found in the Gallery section (page 26) of the June, 2017 Reflector. The magazine can be found here - https://www.astroleague.org/files/reflector/Reflector%20-%20June%202017_singe%20pgs.pdf.
Also note that fellow Dark Sky New Mexico imager Brian Ottum also has an image on the same page.
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From: Dan Crowson [mailto:dcrowson@...]
M4 (NGC 6121) is a Shapley-Sawyer class IX (http://en.wikipedia.org/wiki/Shapley%E2%80%93Sawyer_Concentration_Class) globular cluster located approximately 7,200 light-years away in Scorpius. It is easy to find in the sky because it is just over a degree away from the bright (magnitude ~1) star Antares (bottom right in the image).
NGC 6144 is the class XI globular at the top right.
Luminance – 12x600s – 120 minutes – binned 1x1 RGB – 8x300s – 40 minutes each – binned 2x2
240 minutes total exposure – 4 hours
Imaged on April 4th and 8th, 2016 at the Danville Conservation Area (New Florence, Missouri) with a SBIG ST-8300M on an Astro-Tech AT90EDT at f/6.7 603mm.
LRGB - https://www.flickr.com/photos/dcrowson/26627906420/sizes/l
Dan ----
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Mark Hanson
Nice image Dan
From: DarkSkyNewMexico@... [mailto:DarkSkyNewMexico@...]
Sent: Monday, June 19, 2017 7:52 PM To: 'Dan Crowson' Subject: [DarkSkyNewMexico] FW: M4
This one can be found in the Gallery section (page 26) of the June, 2017 Reflector. The magazine can be found here - https://www.astroleague.org/files/reflector/Reflector%20-%20June%202017_singe%20pgs.pdf.
Also note that fellow Dark Sky New Mexico imager Brian Ottum also has an image on the same page.
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From: Dan Crowson [mailto:dcrowson@...]
M4 (NGC 6121) is a Shapley-Sawyer class IX (http://en.wikipedia.org/wiki/Shapley%E2%80%93Sawyer_Concentration_Class) globular cluster located approximately 7,200 light-years away in Scorpius. It is easy to find in the sky because it is just over a degree away from the bright (magnitude ~1) star Antares (bottom right in the image).
NGC 6144 is the class XI globular at the top right.
Luminance – 12x600s – 120 minutes – binned 1x1 RGB – 8x300s – 40 minutes each – binned 2x2
240 minutes total exposure – 4 hours
Imaged on April 4th and 8th, 2016 at the Danville Conservation Area (New Florence, Missouri) with a SBIG ST-8300M on an Astro-Tech AT90EDT at f/6.7 603mm.
LRGB - https://www.flickr.com/photos/dcrowson/26627906420/sizes/l
Dan ----
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