Sharpless 112
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Dan Crowson
Sharpless 112 (DWB 174 and others) is a nebula ionized by BD+45 3216. This one is located approximately 5,675 light-years away in Cygnus.
Ha – 24x1800s – 720 minutes – binned 1x1 Luminance – 24x600s – 240 minutes – binned 1x1 RGB – 10:8:9x300s – 50:40:45 minutes each – binned 2x2
1095 minutes total exposure – 18 hours 15 minutes
Imaged over ten nights in October, 2020 and May, June and October, 2021 at 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/51807523792/sizes/l/ HaRGB - https://www.flickr.com/photos/dcrowson/51808596948/sizes/l/
Dan ----
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Bernard Miller
Dan,
Really nice color on this one.
Bernard
From: DarkSkyNewMexico@groups.io On Behalf Of Dan Crowson
Sent: Saturday, January 8, 2022 4:04 PM To: 'Dan Crowson' <dcrowson@...> Subject: [DarkSkyNewMexico] Sharpless 112
Sharpless 112 (DWB 174 and others) is a nebula ionized by BD+45 3216. This one is located approximately 5,675 light-years away in Cygnus.
Ha – 24x1800s – 720 minutes – binned 1x1 Luminance – 24x600s – 240 minutes – binned 1x1 RGB – 10:8:9x300s – 50:40:45 minutes each – binned 2x2
1095 minutes total exposure – 18 hours 15 minutes
Imaged over ten nights in October, 2020 and May, June and October, 2021 at 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/51807523792/sizes/l/ HaRGB - https://www.flickr.com/photos/dcrowson/51808596948/sizes/l/
Dan ----
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Gregg Ruppel
Nice work, Dan. I think you could push the saturation a bit on the Ha version. Thanks for sharing.
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Gregg www.greggsastronomy.com
On Jan 8, 2022, at 3:04 PM, Dan Crowson <dcrowson@...> wrote:
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Dan Crowson
Thanks Gregg. I wasn’t real happy with the Ha version so I held out for luminance. With few exceptions, it seems like my camera is weak in Ha and I think it has a better QE than yours.
I tried to saturate after reading this but it seemed to make the nebula a very odd red and pulled the red out of the background.
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From: DarkSkyNewMexico@groups.io <DarkSkyNewMexico@groups.io> On Behalf Of Gregg Ruppel
Sent: Saturday, January 8, 2022 5:48 PM To: DarkSkyNewMexico@groups.io Subject: Re: [DarkSkyNewMexico] Sharpless 112
Nice work, Dan. I think you could push the saturation a bit on the Ha version. Thanks for sharing.
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Gregg Ruppel
There is a significant amount of fainter Ha in the background:
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http://greggsastronomy.com/IMAGES/Sh2-112_HaRGB.jpg Gregg www.greggsastronomy.com
On Jan 8, 2022, at 3:59 PM, Dan Crowson <dcrowson@...> wrote:
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Dean Glace
DAN,
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Nice....I like the red enhancement from the Ha... Dean
On Jan 8, 2022, at 6:04 PM, Dan Crowson <dcrowson@...> wrote:
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