Print Page - Califirnia

Title: Califirnia
Post by: Whitters on Oct 18, 2009, 21:02:39

4 hours of NGC1449, 48 x 300s Tamron 105mm f2.5 camera lens used at f4. MX916 camera, Astornomik ha filter.
17th October 2009.
Processing levels and curves

(http://82.69.92.28/Astronomy/images/MX916/2009_10_17/NGC1449-48x300Ha.png)

Title: Re: Califirnia
Post by: Daniel on Oct 18, 2009, 23:15:19

Nice image, wish i could get that FOV, black point looks a little clipped, but the detail in there is lovely!

Daniel
:O)

Title: Re: Califirnia
Post by: MarkS on Oct 19, 2009, 06:23:53

I like that Paul. Very sharp and plenty of detail there.

That lens/camera cobination is giving you a very useful field of view.

Mark

Title: Re: Califirnia
Post by: Whitters on Oct 19, 2009, 09:16:47

Thanks guys. Looking at the image on my monitor at work it appears to be moe clipped than my laptop which is callibrated. Both screens are LCD. What does anyone else see?

Title: Re: Califirnia
Post by: Daniel on Oct 19, 2009, 11:38:29

This is the problem I get at work too, these monitors are supposed to be calibrated, but if that's correct my laptop must be way off!

Daniel
:O)

Title: Re: Califirnia
Post by: Mike on Oct 19, 2009, 11:43:19

It looks clipped to me. Your other image does too. They look very 'flat', almost as if they have been reduced in the bit depth somehow. Can you post a link up to your FITS files so we can have a play?

Title: Re: Califirnia
Post by: Whitters on Oct 19, 2009, 20:48:19

http://82.69.92.28/Astronomy/images/MX916/2009_10_17/ choose the fit file and "save the link as"

Title: Re: Califirnia
Post by: Whitters on Oct 19, 2009, 21:25:39

Looks like there is a problem with my system start-up, It runs the gamma loader but then resets the display :-( MS Vista thinking it knows best no doubt! :evil:
I re-ran the gamma loader and you are right all the subtle detail is lost. Bugger! I'll have another go

Title: Re: Califirnia
Post by: RobertM on Oct 20, 2009, 15:38:01

Paul, very nicely framed and lovely fov. On thing I always consider is resampling the individual subs before stacking and in your case, especially as you have so many subs, it would definitely be worthwhile trying. Double the size of each sub then stack, I would hope for better resolution with little or no noticable increase in noise or other artifacts. Worth a try anyway...

Robert

Title: Re: Califirnia
Post by: Whitters on Oct 21, 2009, 22:01:59

Thanks Robert, sounds like a plan.

Title: Re: Califirnia
Post by: Whitters on Nov 10, 2009, 09:02:19

Reprocessed double sized as Robert suggested. The monitor was not being callibrated, this is now sorted. how does this look?
(http://82.69.92.28/Astronomy/Images/MX916/2009_10_17/NGC1449-48x300Ha_t4.png)

Title: Re: Califirnia
Post by: JohnP on Nov 10, 2009, 09:26:26

Small......!

Title: Re: Califirnia
Post by: Tony G on Nov 10, 2009, 13:40:04

John,

I wouldn't say that 100 light year long was small. :D

Tony G

Title: Re: Califirnia
Post by: Mike on Nov 10, 2009, 18:25:09

yeah it's half the size

Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: Whitters on Oct 18, 2009, 21:02:39