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Old 23-09-2023, 04:35 PM
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strongmanmike (Michael)
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NGC 253 The Silver Dollar Galaxy

This is a perenial favourite and like many others, I have also hit it a few times over the years too Of course, not under the much-improved conditions of my new observatory (see comparison with my last effort below)

Conditions in Spring are often windy in this region and this year has been no exception and commensurate with this, the seeing hasn't been the usual sharpness previously enjoyed at Eagleview and for the two nights of this capture, the average FWHM, as measured by MaximDL, of most subs hovered around 2.1" with a few up at 2.4" and several at 2.0" unfortunately the best Lum subs only had an average FWHM of 2.0" ..this is however still as good or better than the handful of the very best nights I experienced over eight years at my previous observatory!..so while I was a little dissapointed, I'll take it

Never the less, some decent details have been revealed and I was particularly happy with the detail in the back ground galaxies too. One of the challenges in a good image of NGC 253, is to be able to capture and reveal the very faint outer halo that envelopes the galaxy and given the dark skies over my observatory I was able to acheive this and show it in a natural colour image!...happy with this....sigh, juuuust wish it had been one of the several FWHM nights of 1.5" I've had and the telescope wasn't buffeted by wind gusts ...oh well, can't win'em all...

OK hope you like it and as usual, all images are best viewed on a proper computer monitor in a dimly lit room

NGC 253 Close up viewed on Pbase

NGC 253 Close up viewed on Flickr

Faint outer stellar halo

Lastly...and even without Eagleview's best conditions, compare to my last shot of this galaxy from my previous observatory at Wallaroo in 2018, all be it a quickie at low altitude...all the same imaging gear...but no comparison!

Mike
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Last edited by strongmanmike; 24-09-2023 at 10:50 AM.
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Old 23-09-2023, 04:54 PM
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Hi Mike,
that's great and you've pulled out far more detail than the old 2018 picture.


cheers
Allan
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Old 23-09-2023, 06:05 PM
matlud (Mathew)
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Beautiful Mike! A really great image with great detail, a nice natural palette and plenty of faint background fuzzies across the field. Must be so pleasing to see these kind of results rolling in from the new obs. CS, Mat
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Old 23-09-2023, 06:26 PM
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Nice work Mike. The Ha looks nice
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Old 23-09-2023, 06:54 PM
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That turned out very well despite the windy conditions which can be a challenge.

Gre.
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Old 23-09-2023, 07:01 PM
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Nice colours great detail
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Old 23-09-2023, 09:45 PM
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strongmanmike (Michael)
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Quote:
Originally Posted by alpal View Post
Hi Mike,
that's great and you've pulled out far more detail than the old 2018 picture.
cheers
Allan
Yeah it's hard to believe they were both taken with the same scope, camera, control and processing software

Quote:
Originally Posted by matlud View Post
Beautiful Mike! A really great image with great detail, a nice natural palette and plenty of faint background fuzzies across the field. Must be so pleasing to see these kind of results rolling in from the new obs. CS, Mat
Thanks a lot Mat, yes, it is, I'm definitely happy Eagleview has proved to be a good astro site

Quote:
Originally Posted by gregbradley View Post
That turned out very well despite the windy conditions which can be a challenge.

Greg.
The wind was just annoying, once the dome was pointing into the wind (North), it softened quite a few subs Actually the Sirrius dome was better in this regard where I was able to close the lower shutter and this saved me a few times out at Wallaroo and allowed imaging is stiff winds, this cannot be done with the Scope domes.

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Nice colours great detail
Thanks Trev
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Old 23-09-2023, 09:47 PM
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strongmanmike (Michael)
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Nice work Mike. The Ha looks nice
Cheers Terry

Mike
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Old 23-09-2023, 10:44 PM
Startrek (Martin)
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Mike,
Conditions may not have been ideal but this image is excellent
Fine detail , resolution and colour is tremendous
Well done !!
Isn’t it a wonderful Galaxy to image , I’ve racked up plenty of hours both with OSC and Mono over the past few months

Best

Martin
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Old 24-09-2023, 07:31 AM
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Ryderscope (Rodney)
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Fantastic and definitely worth taking a peek at the old and the new. This is an excellent rendition of this perennial favourite
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Old 24-09-2023, 08:14 AM
markas (Mark)
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Great detail, Mike - in spite of the less than ideal seeing. Interesting contrast to the previous visit!
Mark
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  #12  
Old 24-09-2023, 09:22 AM
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strongmanmike (Michael)
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Quote:
Originally Posted by Startrek View Post
Mike,
Conditions may not have been ideal but this image is excellent
Fine detail , resolution and colour is tremendous
Well done !!
Isn’t it a wonderful Galaxy to image , I’ve racked up plenty of hours both with OSC and Mono over the past few months

Best

Martin
Quote:
Originally Posted by Ryderscope View Post
Fantastic and definitely worth taking a peek at the old and the new. This is an excellent rendition of this perennial favourite
Quote:
Originally Posted by markas View Post
Great detail, Mike - in spite of the less than ideal seeing. Interesting contrast to the previous visit!
Mark
Thanks guys ...yes, given the frequency of sub 2" seeing up at Eagleview has been surprisingly high, I have come to expect it all the time now guess I've gotten greedy...and perhaps a little unrealistic, seems my expectations have gone up Of course, I still have plenty of opportunity to enhance this effort over the next couple of months, should I find the seeing back at 1.5" one night ...of course, I may have moved on by then too, I may wish to use any good nights to image something small too..? I have a few targets in mind....

Mike
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Old 24-09-2023, 10:43 AM
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Andy01 (Andy)
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Looks great Mike - you must be delighted with your new digs & obsy!
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  #14  
Old 24-09-2023, 11:04 AM
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strongmanmike (Michael)
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Quote:
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Looks great Mike - you must be delighted with your new digs & obsy!
Thanks Andy, yeah, pretty happy, seeing wise even my ordinary nights at Eagleview are better than my best nights were at Wallaroo and the darkness and transparency are much greater

Mike
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Old 24-09-2023, 11:23 AM
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Amazing detail Mike. Always fun when you're able to trump past efforts with latest gear - and you've had the ultimate imaging makeover with the site.

Sounds like dome not really an optional extra in semi-alpine setting. Did you have much trouble with snow affecting access in winter?
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Old 24-09-2023, 11:39 AM
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strongmanmike (Michael)
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Quote:
Originally Posted by RobF View Post
Amazing detail Mike. Always fun when you're able to trump past efforts with latest gear - and you've had the ultimate imaging makeover with the site.

Sounds like dome not really an optional extra in semi-alpine setting. Did you have much trouble with snow affecting access in winter?
Cheers Rob it's all the same imaging gear and software, just a new site

The wind is an issue all around the ACT this time of year, when I was out at Wallaroo, imaging before I had a dome, many nights were affected by stiff breezes and winds this time of year, softened and even ruined many an image sadly...

Mike
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