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Astrophotography...
http://forum.celestialmatters.org/viewtopic.php?f=9&t=927
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Author:  t00fri [ Sat, 20-10-18, 16:17 GMT ]
Post subject:  Re: Astrophotography...

Quote:
By the way - I hope that I can try imaging the Draco Triplet you mentioned earlier, but it will have to wait for next year, maybe around April. Before that, our house is in the way - no unobstructed view in northern direction.


Well, Mother Nature can never be pushed aside ;-)
So I have some further time for fine-tuning the Draco Triplet display until April ...

Since my two collaborators are currently again in "pause" mode for professional reasons, I returned to galaxy rendering and texture aspects in the meantime.

E.g. I experimented with inserting another galactic "dust layer"(with a gradient) into the galaxy templates for the various Hubble types. This renders things a little more "washed out" like in the real Universe ...

Example of a Sb-type galaxy (NGC 6978):

[click on image for a bigger image]
Attachment:
ngc6978_Sb.jpg
ngc6978_Sb.jpg [ 40.12 KiB | Viewed 292 times ]


Let's wait and see...

Cheers,
Fridger

Author:  fenerit [ Tue, 13-11-18, 11:33 GMT ]
Post subject:  Re: Astrophotography...

Amazing shot of NGC 7331 group and Stephan's Quintet. You go deep, indeed! ;) 8)

Author:  schreiberste [ Fri, 16-11-18, 8:26 GMT ]
Post subject:  Re: Astrophotography...

Apropos deep... :D

This is my newest image: the perfectly edge-on galaxy NGC 891 next to the Abell 347 galaxy cluster.
The result could surely be improved by even more exposure time, but even now with 5 1/2 hours (199 x 100 seconds) there are a lot of faint galaxies visible.
The colors are more or less "artistic", as I really had a hard time to get naturally looking star colors across the whole image. Somehow there was a bad color gradient from the center towards the edges.
But I think for an image taken with a DSLR on a small 6" under always much too bright city sky it turned out quite ok ;)

Steffen

Attachments:
File comment: NGC 891 and Abell 347
ngc891_2018-11_(199x100s_driz_hist_bgx_cc_dt_gimp_fw).jpg
ngc891_2018-11_(199x100s_driz_hist_bgx_cc_dt_gimp_fw).jpg [ 2.2 MiB | Viewed 155 times ]

Author:  t00fri [ Fri, 16-11-18, 11:17 GMT ]
Post subject:  Re: Astrophotography...

Nice!

And as usual -for comparison- NGC 891 from celestia.Sci

A) Wide view with bright star HIP 11185 / HD 14771/ SAO 38002
Attachment:
n891.jpg
n891.jpg [ 28.49 KiB | Viewed 148 times ]


B) NGC 891 zoomed
Attachment:
n891_big.jpg
n891_big.jpg [ 28.45 KiB | Viewed 148 times ]


Cheers,
Fridger

Author:  fenerit [ Fri, 16-11-18, 23:59 GMT ]
Post subject:  Re: Astrophotography...

Great Andromeda shot and screendumps!

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