Log in

View Full Version here: : Very deep Eta Carina Neb in Ha


tornado33
27-05-2007, 09:44 PM
Used the 6 inch Schmidt Newtonian Cometracker tonight, with plenty of moonlight and the Ha filter to take the deepest Ha image Ive done with the 6 inch. 1.25 hours total

5x15mins ISO400, Idas uv/ir and Baader 7Nm Ha filters. MPCC coma corrector. 6 inch F3.6 meade Cometracker scope, hand guided. Image masked in Photoshop after processed with flats, dark and offset frames in Iris as usual. Hutech modded 350D used. Quickly processed will see if I can improve it later on. Would no doubt get less noise with a cooled camera, though as quite chilly wasnt too much noise visible in the dark frame tonight.
Scott
PS heres a larger version
http://www.iceinspace.com.au/uploads/etacar%205x15minsiso%20400ha%206inc hmaskedbig.jpg

ballaratdragons
27-05-2007, 09:50 PM
Scott, that is another stunning shot!!!!

The stringy make up of the black gas is so clear!!!!!!!!!!!!!!!!!!!

Ric
27-05-2007, 09:57 PM
Wow, what a beauty Scott. So much fine detail everywhere.

cheers

tornado33
27-05-2007, 10:20 PM
Thanks all. I was pleasantly surprised to get that detail under a bright moonlit sky.
Scott

seeker372011
27-05-2007, 10:50 PM
ooooh,, verry deep indeed

h0ughy
28-05-2007, 07:14 AM
Well a bit of noise in that;) but what a stunning shot:thumbsup:

Garyh
28-05-2007, 08:41 AM
Fantastic shot Scott..heaps of detail!

spearo
28-05-2007, 07:50 PM
Lovely shot, very wide field of capture!
looks great and sharp as a tack too
very nice image
cheers
frank

tornado33
28-05-2007, 08:27 PM
Thanks all. It definately pays to do an hour or more with narrowband imaging. I took about a dozen short 15 second test shots at ISO1600 to check focus, adjust and re check till stars were as small as I could get.
Scott

PhotonCollector
29-05-2007, 10:33 AM
Hi Scott,
That's an excellent image, very deep and rich with detail. Well done!

xelasnave
29-05-2007, 02:09 PM
Frame it..fantastic
alex

2020BC
29-05-2007, 05:53 PM
A classic H-alpha shot.:thumbsup:

Dr Nick
29-05-2007, 06:08 PM
That is amazing! ;)

tornado33
29-05-2007, 09:53 PM
Thanks all. The masking technique definately helps. I save the original.pic image file in Iris as a .tiff then open it in Photoshop, using Levels to get a very bright image, burnt out in the bright parts, save that, the re open the original and use Levls to only show the bright parts, save that, and mask the dark one over the bright one, using this proceedure
http://www.astropix.com/PFA/SAMPLE4A/SAMPLE4A.HTM