Helix Nebula - NGC7293 (Hubble Color)

Greekastronomy · #1 21-08-2009, 11:10 PM

http://www.astrovox.gr/forum/album_pic.php?pic_id=9228

-> Telescope: LX200GPS 14" - Hyperstar 3
-> CCD: ATIK 16HR
-> Guiding Telescope: SkyWatcher 4"
-> Guiding Camera: Meade DSI 2
-> Guiding Software: PHD Guiding
-> Filter: Astronomik Ha, O3, S2
-> Processing: MaximDl / AstroArt / PhotoShop CS3
-> Exposure: Ha = 3hrs 38min / O3 = 90min / S2 = 130min
-> Date: 13, 15, 16, 18 August 2009
-> Place: Athens Greece

renormalised (Carl) · #2 22-08-2009, 12:29 AM

How are you mapping the NB filters?? Seems you map Ha to the green channel in many of your images. Try mapping it to the red channel.

In any case, it's a good shot, Antony

Greekastronomy · #3 22-08-2009, 06:48 AM

Thanks. I can not put tha Ha as red because it will be not Hubble palette then. Hubble palette is:
S2 = Red / Ha = Green / O3 = Blue
The truth is that i needed more S2 (red) frames for bringing up the Red color. Will do this in the next image. Thanks a lot again.

Antony

Kevnool (Kev) · #4 22-08-2009, 07:29 AM

Thats a great Helix in my books Anthony.
Clear as.
Cheers Kev.

multiweb (Marc) · #5 22-08-2009, 10:26 AM

Superb picture!

Details are so sharp, yet you've managed to keep the stars soft and nice. Great dat capture and processing. One of the best I've seen if not the best.

renormalised (Carl) · #6 22-08-2009, 11:13 AM

Quote:

Originally Posted by Greekastronomy

Thanks. I can not put tha Ha as red because it will be not Hubble palette then. Hubble palette is:
S2 = Red / Ha = Green / O3 = Blue
The truth is that i needed more S2 (red) frames for bringing up the Red color. Will do this in the next image. Thanks a lot again.

Antony

I know what the Hubble palette is, but there's nothing like a bit of experimentation

It's not just science, it's art, and a good artist (or scientist) shouldn't be afraid to mix things up

g__day (Matthew) · #7 22-08-2009, 12:44 PM

Superb!

gregbradley · #8 22-08-2009, 12:51 PM

Great shot.

The red is probably there already and needs red channel boosted in curves (you can do individual colour channels in curves). Try that to see if it is there already.

You can also bin o111 and S11 2x2 like you do with RGB to get a better signal/noise ratio.

Greg.

lesbehrens (Les) · #9 22-08-2009, 01:35 PM

wow. thats a very nice shot.

Rodstar (Rod) · #10 23-08-2009, 07:25 AM

Nice. Last night it looked rather blobby in my scope, good to be reminded what it looks like in all its glory!

Lester · #11 23-08-2009, 08:57 AM

Fantastic, detailed image.

Looking forward to more of your work.