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Captured by
Douglas Rollain

Lion Nebula SH2-132 - RC71

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Posts Made By: Greg Bradley

September 7, 2006 02:06 PM Forum: CCD Imaging and Processing/Deep Sky

Lagoon with no stars

Posted By Greg Bradley
Following a nice example of the Lagoon with stars removed to highlight the nebula here is one I did.

It certainly highlights the nebula. Also this nebula has a faint blue reflection nebula surrounding it which the high light throughput of the fluorite FS152 has shown from my dark site. Canon 20D.

Greg.

September 9, 2006 07:19 AM Forum: CCD Imaging and Processing/Deep Sky

The Omega Nebula

Posted By Greg Bradley
As I have learnt new skills with Photoshop which is a world in itself I have gone back to a few images I was never happy with.

This one processed up much better than my original attempt.

This was taken from my backyard observatory, RCOS 12.5 inch, Sbig ST2000XM, RGB plus UHC filter.

Photoshop, plus Noel Carboni astro tools.

Greg.

September 9, 2006 02:20 PM Forum: CCD Imaging and Processing/Deep Sky

The Orion Nebula

Posted By Greg Bradley
From a few weeks ago.

Modified Canon 20D and Tak FSQ106N on a Tak NJP mount.
20 x 2 minutes, 5 x 10 seconds for the core.

Took me all night to process this one.

Greg.

September 9, 2006 11:41 PM Forum: CCD Imaging and Processing/Deep Sky

Trifid and Lagoon widefield redo

Posted By Greg Bradley
Similarly I redid the processing on my Lagoon Trifid shot from a few weeks ago. It had a lot more in it that I didn't bring out in the processing. As I learn more about Photoshop this becomes easier.

FSQ/STL11000XCM, 42minutes (21 x 2mins unguided).

Greg.

September 16, 2006 07:10 AM Forum: CCD Imaging and Processing/Deep Sky

Sculptor Galaxy

Posted By Greg Bradley
FS152 F6, 11 x 1min, 2 x 2 minutes, modified Canon 20D camera.

Greg.

September 16, 2006 10:33 PM Forum: CCD Imaging and Processing/Deep Sky

Coronis Australis

Posted By Greg Bradley
Here's one you don't see everyday.

This is not too far from the Lagoon Nebula.

FSQ/STL11000XCM from my backyard observatory. 16 x 2 minutes unguided.

Greg.

September 20, 2006 01:39 AM Forum: Refractors

TMB152/175 v FS152 v TOA150 v AP155 v TEC 160 fluo

Posted By Greg Bradley
There are some really high quality scopes up for sale on Astromart.

I am wondering of the relative merits of the above scopes?

Apart from the obvious gain of more aperture is a good thing what are the relative merits of this fine group of APO's?

I currently own a Tak FS152 and its pluses are it is very light, well made, quick cool down, superior light throughput to most other scopes being a fluorite doublet but does have some slight (quite slight) false colour.

The TOA 150 is 44lbs, the TMB175 cnc is 55lbs, the TEC I am not sure but I don't think it is very heavy, nor is the AP. The FS152 is 24lbs plus rings/finder scope (another 8 or so).

I am interested in weight, colour correction, sharpness of optics, sutiability for CCD imaging (ie. availability of accessories like focal reducers and fittings and a good focuser). Cool down time is not that big an issue for me living in temperate Australia.


Greg.

September 27, 2006 11:16 AM Forum: CCD Imaging and Processing/Deep Sky

Milky Way Mosaic

Posted By Greg Bradley
I decided last year to capture the Milky Way while its in its splendour, down under, from horizon to horizon. From my dark site observatory.

http://www.pbase.com/gregbradley/image/67613313

Modified Canon 20D, 4 x 20 secs each, no tracking at all, standard Canon 18-55mm lens at 18mm, F3.5, ISO 3200.

Images Plus and Photoshop for creating the mosaic (using the merge photo command)

Greg.

October 7, 2006 01:04 PM Forum: Digital SLR AstroPhotography

Sigma cameras

Posted By Greg Bradley
Has anyone had any experience with the Sigma DSLRs for astrophotography?

The different approach to the chip colour handling is superior if it has low noise for high ISO DSLR astrophotgraphy which the earlier models may not have been able to do.

There is now an SD14 model just released. On paper it should be superior as long as the other factors above that can make it unsuitable for astro-photography.

Greg.

October 15, 2006 03:21 AM Forum: CCD Imaging and Processing/Deep Sky

Orion Nebula reprocessed

Posted By Greg Bradley
I have been working on processing this again on and off for a few weeks now. I finally got it to the stage where I was happy with it.

FS152, modified Canon 20D.

Greg.

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