Centaurus A

Terry B · #1 07-04-2008, 10:31 PM

Dear All
I took this image a few nights ago after playing with the dim Abell PNs
It is 12 x 5 mins taken as sRAW files with my 40D. I did this to make smaller files that don't take as long to process on my less than fast computer. I didn't realise that Iris doesn't like sRAW files and refused to make them into colour images. I then tried DSS and it was happy to stack them. It seems much harder to control the output levels with DSS compared to Iris but I suppose it is what you are use to.

Scope is my VC200L at 1800mm guided with Q-guide and guidemaster.

Dietmar · #2 08-04-2008, 03:57 AM

hey, that's a nice shot!

iceman (Mike) · #3 08-04-2008, 05:11 AM

Lovely image Terry, I like the scale and detail. The outer halo appears a bit blue though.

skwinty (Steve) · #4 08-04-2008, 05:34 AM

Hi Terry
Very slick pic!!

Tamtarn · #5 08-04-2008, 01:08 PM

Nice work Terry. Good detail stars are spot on.

Agree with Mike a little less blue would make it even better.

RB (Andrew) · #6 08-04-2008, 01:16 PM

Nice scale & detail Terry but I agree with the others, just a tad too blue.

Terry B · #7 08-04-2008, 01:56 PM

Quote:

Originally Posted by RB

Nice scale & detail Terry but I agree with the others, just a tad too blue.

I agree. Because of the change in my usual processing for the sRAW file I couldn't use the normal G2 star balance that I usually use and had to guess. Not scientific at all

Alchemy (Clive) · #8 08-04-2008, 04:52 PM

those 40ds sure do the job, shot at f9 too

Terry B · #9 08-04-2008, 11:30 PM

I have fiddled with the colour balance. I think this is better.

iceman (Mike) · #10 09-04-2008, 04:58 AM

Better colours but now overexposed at the core.

marc4darkskies (Marcus) · #11 09-04-2008, 08:25 AM

Quote:

Originally Posted by Terry B

I have fiddled with the colour balance. I think this is better.

Are you using Photoshop? If you are, make sure you "preserve luminosity" while fiddling with the colour balance - this will help stop the burn out you've added at the core.

I think you've got a good image there!

Cheers, Marcus

Terry B · #12 09-04-2008, 09:16 AM

Quote:

Originally Posted by marc4darkskies

Are you using Photoshop? If you are, make sure you "preserve luminosity" while fiddling with the colour balance - this will help stop the burn out you've added at the core.

I think you've got a good image there!

Cheers, Marcus

Sadly I don't have photoshop but am using gimp. It obviously takes lots of practice to do this well.

Tamtarn · #13 10-04-2008, 12:47 AM

Just noticed the reprocessed image looks much better Terry