Date
1 - 6 of 6
NGC5457 (M101) Pin wheel in the Great Bear - The AP155 Galaxy Safari resumes with rattle snakes
|
I'm finally back up and running! There was an equipment issue at the remote observatory that required a late night stay in freezing weather and no heat! I know that's nothing for the folks up east, but I'm a sissy. It's is a pretty remote location with no cell service or humans in the middle of a 14,000 acre ranch. There are a bunch of rattle snakes for company. Fortunately they're not active now.
I managed to bag 2 different galaxies after the moon set Monday and Wednesday night. I'm pretty happy with the color I was able to pull out of M101 with only 2.8 hours of integration. The dark skies really make a difference. CCD Inspector showed the subs with a contrast ratio of 11.93-13.36. Of course the CNR was about 2.3-4.0 before the moon completely set. That's not bad imaging broadband. I'm sure it could be better, but with 17 subs, the stack had virtually no color background noise. https://astrob.in/full/ff1uc5/0/ John Jennings
|
|
|
|
Roland Christen
Very nice results.
Roland
-----Original Message-----
From: John Jennings <johnrogerjennings@...> To: main@ap-ug.groups.io Sent: Sat, Jan 15, 2022 12:57 pm Subject: [ap-ug] NGC5457 (M101) Pin wheel in the Great Bear - The AP155 Galaxy Safari resumes with rattle snakes I'm finally back up and running! There was an equipment issue at the remote observatory that required a late night stay in freezing weather and no heat! I know that's nothing for the folks up east, but I'm a sissy. It's is a pretty remote location with no cell service or humans in the middle of a 14,000 acre ranch. There are a bunch of rattle snakes for company. Fortunately they're not active now.
I managed to bag 2 different galaxies after the moon set Monday and Wednesday night. I'm pretty happy with the color I was able to pull out of M101 with only 2.8 hours of integration. The dark skies really make a difference. CCD Inspector showed the subs with a contrast ratio of 11.93-13.36. Of course the CNR was about 2.3-4.0 before the moon completely set. That's not bad imaging broadband. I'm sure it could be better, but with 17 subs, the stack had virtually no color background noise. https://astrob.in/full/ff1uc5/0/ John Jennings
|
|
|
|
John Jennings
Thanks Roland.
|
|
|
|
Pete Lardizabal
Beauty John!!! 😎 Pete
On Jan 15, 2022, at 1:57 PM, John Jennings <johnrogerjennings@...> wrote:
|
|
|
|
ROBERT WYNNE
Well done and worth the environmental hazards. -Best, Robert
|
|
|
|
John Jennings
Thanks Robert, Pete.
Always looking to avoid environmental hazards. No CareFlite rides for me! The things we do to get an image... John
|
|
|