Image of the day

Captured by
RICHARD COFER

VdB 141 Ghost Nebula

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Posts Made By: Greg Bradley

January 2, 2007 03:45 AM Forum: CCD Imaging and Processing/Deep Sky

Ok lets see if u guys can help me out

Posted By Greg Bradley

Rick,

I would start out with a modified Canon DSLR second hand from Astromart. There are plenty for under $1000. A 2nd hand Canon 350D would be the go. Hutech make the modification and they are often for sale on astromart for around $650-800 - something like that. I saw a modified 20D recently for $850 - that was way underpriced, they are normally worth about $1600.

With the money left over you can buy an F6.3 Celestron focal reducer and Images Plus to process the images.

Shoot the images with maximum ISO (sensitivity setting) and take say 30 secs to 90 seconds depending on your mounts tracking. You could also autoguide using a cheap DSI later on.

Take lots of images of the same thing say 20 or 30 x 60 seconds or longer (up to say 5 minutes with autoguiding) of most objects will come out looking nice. Much better than any DSI, Stellacam or anything else in that price bracket. It is maximum bang for your buck.

Greg.

January 7, 2007 01:43 AM Forum: CCD Imaging and Processing/Deep Sky

One from last night

Posted By Greg Bradley

Nice one David. Excellent autoguiding too.

Greg.

January 8, 2007 01:12 AM Forum: CCD Imaging and Processing/Deep Sky

M1 Widefield (LRGB)

Posted By Greg Bradley

Lovely shot. It gives a real 3D aspect to the space and stars.
Great tracking and lovely star colours.

M1 seems to have a slight pinkish/reddish cast though. Perhaps a lasso, feather 10 pixels and colour balance using colour balance or levels for red would do the trick so you don't affect your nice background star colours.

Greg.

January 9, 2007 11:33 PM Forum: CCD Imaging and Processing/Deep Sky

Autoguiding basics

Posted By Greg Bradley

Often the autoguiding port is a phone jack. The cable is a phone cable with phone jacks at each end. The cable has been wired for autoguiding specifically and isn't a standard phone cable though.

My Sbig camera has an RS 232 plug that fits into the camera (usually there is an adapter plug that converts the phone plug to an RS232 plug). This then plugs into my mount.

A Celestron mount almost for sure has one of these phone jacks for the autoguiding port. It should be labelled, my Nexstar 11 was.

Greg.

January 15, 2007 01:39 PM Forum: CCD Imaging and Processing/Deep Sky

horse `n`flame

Posted By Greg Bradley

Very nice Dietmar. I like the blue reflection nebula you captured very well.

Greg.

January 16, 2007 08:48 AM Forum: CCD Imaging and Processing/Deep Sky

M82 Galaxy

Posted By Greg Bradley

That's a stunner. Well done.
Blair Valley must be pretty dark?

Greg.

January 17, 2007 12:30 AM Forum: CCD Imaging and Processing/Deep Sky

M82 with 9"

Posted By Greg Bradley

Very nice.

Greg.

January 20, 2007 07:27 PM Forum: CCD Imaging and Processing/Deep Sky

Hickson 44

Posted By Greg Bradley

Very, very nice Dan.

Greg.

January 21, 2007 11:14 PM Forum: CCD Imaging and Processing/Deep Sky

Horsehead colour

Posted By Greg Bradley

It is short on colour time so it is mainly Ha. The Ha darker areas tend to be mottled so you are probably seeing that. It doesn't show on my monitor but that's another barrier to image processing - the monitor's performance.

I'll shoot some more colour once I capture this amazing comet that is around at the moment.

Greg.

January 21, 2007 11:17 PM Forum: CCD Imaging and Processing/Deep Sky

M82 reprocessed

Posted By Greg Bradley

Fantastic image Dietmar.
I personally would prefer a little more colour saturation but thats a personal preference.

Is it possible to coax a bit more red out of those jets? Levels/red channel and that area lassooed and feathered may bring out some more of the red jets?

Overall a fantastic image. I can see a lot of effort has gone into this and you've gotten so many things done right to get this.

Greg.