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M31 closeup
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Jeff B
Yeah, treating it like a planetary image makes sense and there are some wicked good planetary imagers out there with bigger apertures too. An interesting challenge. Jeff
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Roland Christen
There's probably a way to do it by taking thousands of very short exposures with a noise-free CMOS camera and stacking them, similar to what planetary imagers do. back then I was using an old ST10 camera with 7.4 micron pixels and quite noisy to boot. I bumped the 10" to F22 with a Barlow to get the image scale up. I think this one was 10 x 5 minute exposures, so it was definitely affected by seeing.
Rolando
-----Original Message-----
From: Jeff B <mnebula946@...> To: main@ap-gto.groups.io Sent: Fri, Oct 15, 2021 10:08 am Subject: Re: [ap-gto] M31 closeup Pretty cool Roland. Very nice. The glob is obviously non-stellar in your old image and on the edge of resolving the outer stars. I bet the 12" with the latest cameras just might "get there". Nice comparison with the Hubble shot.
Jeff
On Fri, Oct 15, 2021 at 10:39 AM thefamily90 Phillips <thefamily90@...> wrote:
-- Roland Christen Astro-Physics
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Jeff B
Pretty cool Roland. Very nice. The glob is obviously non-stellar in your old image and on the edge of resolving the outer stars. I bet the 12" with the latest cameras just might "get there". Nice comparison with the Hubble shot. Jeff
On Fri, Oct 15, 2021 at 10:39 AM thefamily90 Phillips <thefamily90@...> wrote:
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thefamily90 Phillips
Nice!!
From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Roland Christen via groups.io <chris1011@...>
Sent: Friday, October 15, 2021 10:37:25 AM To: main@ap-gto.groups.io <main@ap-gto.groups.io> Subject: Re: [ap-gto] M31 closeup I did shoot one with my 10" Mak many years ago. Here's the image with inset of the Hubble shot:
 -----Original Message-----
From: Jeff B <mnebula946@...> To: main@ap-gto.groups.io Cc: main@ap-ug.groups.io <main@ap-ug.groups.io> Sent: Thu, Oct 14, 2021 8:50 pm Subject: Re: [ap-gto] M31 closeup Major cool Roland.
I bet you could also pick up some of the big M31 Globulars with that scope too. I've visually seen them as decidedly non-stellar in our 11" F12 achromat.
Give it a go.
Jeff
-- Roland Christen Astro-Physics
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Roland Christen
I did shoot one with my 10" Mak many years ago. Here's the image with inset of the Hubble shot:
-----Original Message-----
From: Jeff B <mnebula946@...> To: main@ap-gto.groups.io Cc: main@ap-ug.groups.io <main@ap-ug.groups.io> Sent: Thu, Oct 14, 2021 8:50 pm Subject: Re: [ap-gto] M31 closeup Major cool Roland.
I bet you could also pick up some of the big M31 Globulars with that scope too. I've visually seen them as decidedly non-stellar in our 11" F12 achromat.
Give it a go.
Jeff
-- Roland Christen Astro-Physics
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Jeff B
Major cool Roland. I bet you could also pick up some of the big M31 Globulars with that scope too. I've visually seen them as decidedly non-stellar in our 11" F12 achromat. Give it a go. Jeff
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Roland Christen
Hi Astronuts,
Just posted my final quickie image taken with the 12" F12.5 Mak-Cass. M31, familiar object, up close and personal.
https://www.astrobin.com/hzazjs/
Rolando
-- Roland Christen Astro-Physics
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