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Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: Daniel on Sep 07, 2009, 23:48:26

Title: M16 re-process RRGB test
Post by: Daniel on Sep 07, 2009, 23:48:26
Hi All, I mentioned a while back about experimenting with using the strongest channels in an image as a Luminance to bring out detail, here's my M16 from a while back re-processed using the red channel as a Luminance as well as perfoming deconvolution on the luminance channel rather than the colour.

Anyway, here's a full view and a closeup

Daniel
:O)

(http://farm3.static.flickr.com/2538/3897587263_6effa42951_o.jpg)

(http://farm4.static.flickr.com/3535/3897587279_0666c86eb2_o.jpg)
Title: Re: M16 re-process RRGB test
Post by: Mike on Sep 08, 2009, 00:00:40
Something weird going on with the top right corner of the stars. But overall a nice image.
Title: Re: M16 re-process RRGB test
Post by: Carole on Sep 08, 2009, 19:56:00
That looks smashing Daniel, any chance of posting the earlier version for comparison?

Carole
Title: Re: M16 re-process RRGB test
Post by: Daniel on Sep 08, 2009, 20:50:09
Thanks guy's, The weird star problems are a little over zealous use of deconvolution, might redo that tonight on the way home from work with some masking.

Here's the original, still has quite a lot of detail but the processing has been a little more aggressive on this one.

Daniel
:O)

(http://farm4.static.flickr.com/3444/3757418907_5f7bca8b94_o.jpg)
Title: Re: M16 re-process RRGB test
Post by: MarkS on Sep 08, 2009, 21:26:51

Nice one Daniel - that re-process looks really good.

Mark
Title: Re: M16 re-process RRGB test
Post by: Carole on Sep 09, 2009, 20:07:30
Yes the stars look much better in the re-processed one, less bloated.   Also some seem to have become less prominent.

Well worth doing.

Carole
Title: Re: M16 re-process RRGB test
Post by: Simon E on Sep 09, 2009, 21:26:54
So what kind of setup is needed to get such a cool image. This is the kind of stuff that makes it all worth while. Is the camera an expensive camera, and is the scope something like a 20 " dob?

Looks well cool though

si
Title: Re: M16 re-process RRGB test
Post by: Daniel on Sep 10, 2009, 18:12:25
Hi Simon, admitedly I did take this one on my big ol' 14" hyperstar setup with a canon eos 40D, that said, it's not needed really some of the best images I've taken I took with my 120mm refractor such as this one (http://farm4.static.flickr.com/3093/3160686224_1458828d4b_o.jpg)


The 40D isn't too expensive compared with most dedicated astro camera's, if your just getting into it i'd say DSLR is definitely the way to go.

The 14" setup is really just to save on time really, I can do as much imaging in an hour as I would normally in a whole night with the hyperstar, which is handy as I don't get that much spare time.

Daniel
:O)
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