Log in

View Full Version here: : The Sombrero Galaxy


DiscoDuck
21-05-2020, 10:25 PM
A mix of 14+ hours of L and 5 hours RGB from under light polluted Adelaide suburban skies and 2+ hours of L from a dark sky (though with poor seeing) I managed to get out under last weekend as lockdown restrictions/guidelines are easing :-)

Full resolution available on Astrobin for the crop (https://www.astrobin.com/full/kzmytm/B/)and full field.
(https://www.astrobin.com/full/kzmytm/0/)
I've always thought the starfield around M104 was fairly boring but in the full frame shot there's that nice coloured trio at the top right. At that scale, the galaxy is a bit lost maybe though.

And I was curious as to the apparent concentration of "stars" around the galaxy and wondering if they were globular clusters. Turns out a lot of them are - Rolf Olsen has done some dedicated work identifying them in one of his images here (https://www.universetoday.com/95801/astrophoto-incredible-deep-view-of-globular-clusters-swarming-the-sombrero-galaxy/?fbclid=IwAR2VpuKpCjMzWPXdTDxANGZk4 OwkipIlkvldzjtt1cbEdDt5pgYomGXi88s
)which is rather cool!

DavidU
21-05-2020, 10:44 PM
:thumbsup:

AnakChan
22-05-2020, 01:29 AM
8x of L over RGB! I love your crop, there's so much detail to the disc and looks 3D.

Saturn488
22-05-2020, 03:00 AM
Nice and crisp, great shot!

Placidus
22-05-2020, 06:37 AM
That is pin sharp.

strongmanmike
22-05-2020, 07:58 AM
Nice Mexican hat Paul, M104 is bright enough to shoot a reasonable result even under light polluted skies :thumbsup: Those three stars used to be my last star hop to finding M104 visually...before GOTO :)

Mike

DiscoDuck
22-05-2020, 08:27 AM
Thanks Dave, Sean, Chrys, Mike n Trish and Mike.


Mike: yes, I chose it because I thought I might have a hope of an image while locked in suburbia! :( That said, though the core is incredibly bright, it took a lot of data to subdue the noise in the edges of the galaxy and in the halo.

PeterSEllis
22-05-2020, 08:39 AM
Nice shot Paul, dealing with light pollution in Suburbia is no fun at all, but with persistence you can still get some good stuff.

Peter

DiscoDuck
22-05-2020, 08:44 AM
Thanks Peter. Yes, persistence is the word. At 60 seconds per exposure, that was over 1000 luminance subs :) PixInsight was groaning under the weight!

Bart
22-05-2020, 09:51 AM
Nothing wrong there, Ducky old boy! Top job, great detail, lovely stars!

DiscoDuck
22-05-2020, 09:54 AM
Thanks Barty! :)

marc4darkskies
22-05-2020, 10:07 AM
You should be very happy with that Paul! Colours and detail very good! :thumbsup:

DiscoDuck
22-05-2020, 03:24 PM
Thank you, Marcus.

multiweb
23-05-2020, 08:26 AM
Looking good Paul. Nice one. :thumbsup:

DiscoDuck
23-05-2020, 11:37 AM
Thanks Marc.

Ryderscope
23-05-2020, 05:19 PM
Excellent work Paul. A ‘top hat’ :thumbsup:

DiscoDuck
23-05-2020, 05:54 PM
Thanks Rodney. :D