NGC 7023 - Narrow FieldPosted By Greg Bradley |
Very, very nice Jim.
Greg.
Greg.
Posts Made By: Greg Bradley
September 25, 2006 07:35 AM
Forum:
CCD Imaging and Processing/Deep Sky
September 25, 2006 11:50 AM
Forum:
CCD Imaging and Processing/Deep Sky
Back from Hiatus - North American and PelicanPosted By Greg Bradley |
Awesome Jose and great to hear from you again.
Greg.
Greg.
September 25, 2006 11:24 PM
Forum:
Digital SLR AstroPhotography
A very windy M33Posted By Greg Bradley |
Hi Ivan,
That technique for correcting star trails is written up at Neil Flemings astro-site.
I have used it numerous times since and it can work quite well. In fact it can be used to create some interesting effects like erase the stars almost completely out of a nebula so you see only the nebula.
It is basically this:
1. Create a duplicate layer.
2. Change it from normal to darken.
3. Select the move tool
4. Use the arrow keys to move it slightly one direction or another and you will see the stars shrink. You can also select the offset filter and punch in numbers to see what effect it causes.
You can also resize the image doubling or tripling it and thenusing the offset filter for finer control.
You can also use the colour range tool to select the object of interest in the image and then select inverse so the move effect is only on the background stars and not the object as it tends to blur slightly.
By the way I have a policy of not using my expensive glass in high winds as they can put a lot of dust on the objective.
Greg.
That technique for correcting star trails is written up at Neil Flemings astro-site.
I have used it numerous times since and it can work quite well. In fact it can be used to create some interesting effects like erase the stars almost completely out of a nebula so you see only the nebula.
It is basically this:
1. Create a duplicate layer.
2. Change it from normal to darken.
3. Select the move tool
4. Use the arrow keys to move it slightly one direction or another and you will see the stars shrink. You can also select the offset filter and punch in numbers to see what effect it causes.
You can also resize the image doubling or tripling it and thenusing the offset filter for finer control.
You can also use the colour range tool to select the object of interest in the image and then select inverse so the move effect is only on the background stars and not the object as it tends to blur slightly.
By the way I have a policy of not using my expensive glass in high winds as they can put a lot of dust on the objective.
Greg.
September 26, 2006 05:30 AM
Forum:
Refractors
TMB152/175 v FS152 v TOA150 v AP155 v TEC 160 fluoPosted By Greg Bradley |
Thanks Jim.
Greg.
Greg.
September 28, 2006 12:12 AM
Forum:
CCD Imaging and Processing/Deep Sky
Widefield CocoonPosted By Greg Bradley |
Nice shot Dan.
12 hours eh? You are really going for it mate.
Greg.
12 hours eh? You are really going for it mate.
Greg.
September 28, 2006 11:55 PM
Forum:
CCD Imaging and Processing/Deep Sky
NGC 253Posted By Greg Bradley |
Nice shot Louie. I think it looks fine.
Sometimes you just need a dark site to get more detail for the exposure length. Were you expecting more brightness?
That is a big ask for more detail from 66mm aperture. I think the result is outstanding for the scope size.
Greg.
Sometimes you just need a dark site to get more detail for the exposure length. Were you expecting more brightness?
That is a big ask for more detail from 66mm aperture. I think the result is outstanding for the scope size.
Greg.
October 3, 2006 10:28 AM
Forum:
CCD Imaging and Processing/Deep Sky
M38 and NGC1907 -- Better color and sparklePosted By Greg Bradley |
Sensational image Tom.
Greg.
Greg.
October 3, 2006 10:34 AM
Forum:
CCD Imaging and Processing/Deep Sky
NGC6946 and NGC6939Posted By Greg Bradley |
Wow, what an absolutely gorgeous shot. That is quite a unique image. I love the framing; a beautiful contrast of objects and those Ha regions in the galaxy are stunning.
Greg.
Greg.
October 5, 2006 04:59 AM
Forum:
Digital SLR AstroPhotography
NGC 6960Posted By Greg Bradley |
Wow, you really got that one right! Beautiful.
Greg.
Greg.
October 8, 2006 12:22 PM
Forum:
CCD Imaging and Processing/Deep Sky
Cocoon - HaLRGBPosted By Greg Bradley |
Great image Jim. Wonderful star colours as well.
Greg.
Greg.
Funding Member
