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Captured by
RICHARD COFER

VdB 141 Ghost Nebula

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Posts Made By: Greg Bradley

September 27, 2005 03:18 AM Forum: CCD Imaging and Processing/Deep Sky

m42 - 300D modified...

Posted By Greg Bradley
Great shot. There is some coma in the top left side. Is that because your camera was not square in the visual back? Sometimes visual backs have a bit of sloop in them and you have to push them hard up into the visual back before you lock them down. Also it is good to have screws on both sides or 3 sides of the visual back holding the camera in evenly so it is not leaning down out of square.

Also perhaps the collimation of your scope is out.

Greg.

September 29, 2005 08:38 AM Forum: CCD Imaging and Processing/Deep Sky

Perseus Double Cluster

Posted By Greg Bradley
That is a stunner.

Greg.

September 30, 2005 07:52 AM Forum: CCD Imaging and Processing/Deep Sky

IC 405 Flaming Star HaRGB

Posted By Greg Bradley
I haven't seen that one before. Great object. I like the luminous centre part.

Greg.

October 4, 2005 09:07 AM Forum: CCD Imaging and Processing/Deep Sky

NGC6992 - Veil Nebula from Last Night

Posted By Greg Bradley
Very, very nice.

Greg.

October 5, 2005 09:11 AM Forum: CCD Imaging and Processing/Deep Sky

Reworked M33 from Utah

Posted By Greg Bradley
That's a great M33. One of the best I've seen.

Greg.

October 7, 2005 08:08 PM Forum: CCD Imaging and Processing/Deep Sky

Another M33 -- nothing too special

Posted By Greg Bradley
Hi Tom,

Your shots just get better and better.

When you say LRGB 60:40:40:40 what were the subexposure times?

How do you do that many if it were a lot which I suspect? Do you use the autograb feature of CCDOps? I just remembered you use Maxim DL, so does that allow you to program in say 20 shots in each colour at 3 minutes? Ir do you have to sit there and take each 3 minute shot and autoguide setup on each one, or does the auguiding simply continue why you take more and more shots

I am in the learning curve for my Sbig 2000XM and took a lot of shots last week. But I sat there taking each individual subexposure
unguided for now.

Best,

Greg.

October 9, 2005 08:52 PM Forum: CCD Imaging and Processing/Deep Sky

M 82, redo

Posted By Greg Bradley
That looks great. Amazing how that object has the red pluming out in the centre both ways.

Greg.

October 10, 2005 06:41 AM Forum: CCD Imaging and Processing/Deep Sky

The Baby Nebula - IC1848 Region

Posted By Greg Bradley
I like your shots Jimmy. I like also the stars having nice colours.

Greg.

October 10, 2005 06:46 AM Forum: CCD Imaging and Processing/Deep Sky

Kodak versus Sony CCD chips

Posted By Greg Bradley
The SXV line of Starlight Express cameras don't need to take darks as the dark current is so low. That is one major difference.

Another major difference is the starlight cameras do not use a separate guide chip but has the main imaging chip provide the guiding image so it means exposures take longer for the same picture.

It seems you can pick up an SXV 9 for a lot less than an equivalent Sbig though so they seem to be good bang for buck. I have seen lots of fantastic images from the SXV9. Seems to me to be the equal of the lesser SBigs.

Greg.

October 11, 2005 07:59 PM Forum: CCD Imaging and Processing/Deep Sky

I got a NASA APOD!

Posted By Greg Bradley
Good on ya Tommie boy!

Greg.

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