HORSeHEAD

[alan meehan (Alan)]

Last night was the first clear night we have had for ages so i got my first horsehead 25x5 min shots iso400 10inch newt.have some marks in the middle of the frame they are in the camera dont know how to get rid of them any suggestions
Thanks ALAN

[Matt Wastell (Matt)]

Nice one Alan. A great image!

[multiweb (Marc)]

That's a beauty Alan! Dithering and flat fielding would get rid of those marks when stacking.

[lacad01 (Adam)]

Great work Alan

[alan meehan (Alan)]

Originally Posted by multiweb

That's a beauty Alan! Dithering and flat fielding would get rid of those marks when stacking.

Thanks Marc ill give that a try,

[jase (Jason)]

Great rendition of the Horsehead Alan with pleasing detail to boot. The green cast across the image appears to be reducing some of the vibrant colours of the area from coming through. Perhaps try adjusting curves as shown below. Dropping the green channel will darken the image so you'll need to counteract by raising the RGB overall. In the curve below, I've also performed a subtle contrast adjustment to the blue channel, this is simply to taste.

If the reds become too vibrant from the above adjustment, it is possible to wash out detail. To address this you can drop the saturation a little and increase the lightness shown in the second attachment.

See what you think.

[AlexN]

Alnitak looks very odd for an image that was apparently taken with a newtonian? No diffraction spikes! Looks very "APO" to me!

Good looking image.. I think Jase is on the money! ^^


Edit - Duh... Im an idiot... Schmidt Newtonian!?

[leinad (Dan)]

Great image Alan Good control of noise too.

[alan meehan (Alan)]

Thanks Jase i will give it a sidonio and try what you suggest
Alan

[dpastern (Dave Pastern)]

Nice shot Alan. I don't see any Green tinge myself, but I'm a newbie to all of this, Jase is an old hand.

Dave

[Kal (Andrew)]

Nice shot Alan. I've tried Jase's suggestion on your pic (I'll take a tutorial while I am here ) and his advice is spot on

[alan meehan (Alan)]

Thanks guys i have had a play and did what Jase has suggested and i think i have done ok ,just need more practice
AL

[mexhunter (César)]

Hello Alan:
It is a good image.
I like but this second version.
Many greetings
Cesar

[tornado33]

Great work. yes the 2nd version has more accurate colour I think. theres plenty of data to work with too
Scott

[Hagar (Doug)]

Very nice Alan, Hard getting the colours right isn't it.

[jase (Jason)]

Well done Alan