Carina AGAIN!!!

DJScotty (Scott) · #1 19-01-2015, 11:58 PM

I just can't leave well alone!

Had one final crack at reprocessing this gem.
Have to admit, I am fairly happy with it now.
Same data
Ha - 15 minute subs, 5 hours
SII - 15 minute subs - 3 hours
OIII - 15 minute subs - 5 hours
Processed with FITS liberator (love it! thanks ALPAL) and Photoshop CS6
Taken through ED80 with 0.85 focal reducer with Atik 11000 on AZEQ6
Full size here
http://www.astrobin.com/149808/
Thanks for looking
DJ Scotty

RickS (Rick) · #2 20-01-2015, 08:51 AM

It's a bit blown out in brighter areas, Scott. I can't see the Keyhole?

Slawomir (Suavi) · #3 20-01-2015, 02:19 PM

Hi Scott,

Your photos are getting better and better

As Rick mentioned, perhaps more experimentation with stretching will allow preserving detail in brighter areas while bringing out fainter regions. I think you can also further improve aligning of the images.

Looking forward to seeing you next attempt at the Carina.

Good luck!

DJScotty (Scott) · #4 20-01-2015, 02:39 PM

Thanks Rick and Slawomir.
Yes working on that. Going to do 2 different stretches and mask them together. Run out of time. Moving house!

DJScotty (Scott) · #5 20-01-2015, 02:44 PM

Oh, my 10 inch newtonian has arrived. Going to attempt a 4 panel mosaic. Any tips anyone?

traveller (Bo) · #6 20-01-2015, 02:45 PM

Lots of detail Scott, well done.
I noticed a horizontal line 1/3 of the way down, was that a stacking artefact?
Thanks
Bo

DJScotty (Scott) · #7 20-01-2015, 02:56 PM

Thanks Bo.
That is a column of dead pixels on the class 2 sensor of the Atik 11000.
Removed half of it but ran out of time. Will remove the rest when I revise soon.
Once again thanks!

Slawomir (Suavi) · #8 20-01-2015, 06:54 PM

Quote:

Originally Posted by DJScotty

Oh, my 10 inch newtonian has arrived. Going to attempt a 4 panel mosaic. Any tips anyone?

I have recently used PixInsight to create a 2 by 2 panels mosaic and it worked very well.

Tutorial: http://www.youtube.com/watch?v=H2r3ZYqCaP8

One hint from me would be to make sure you have enough overlap between the images; something between 10 and 20 %, so you have margin for cropping the edges and seamlessly stitching the panels.

Good luck with the move!

alpal · #9 20-01-2015, 08:34 PM

Hi Scott,
did you trouble with NASA FITS Liberator?
It's all blown out in the bright areas.
Maybe you have further stretched the brighter areas afterwards?

cheers
Allan