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View Full Version here: : The Tarantula Nebula


2020BC
11-11-2006, 12:00 PM
Your comments and suggestions on this image would be much appreciated.:)

click here to view (888 KBytes) (http://www.zodiaclight.com/images/Tarantula12x3MinsAutoGuided20Aug06A utoDarkedBias4.jpg)

Exposure:12x3 Mins ISO1600
Scope: Orion 80ED with crosshairs
Camera: Canon 350D (umnod)
Guidedscope: Meade LXD-75 SN-8"
Mount: Meade LXD-75 & Autostar
Guiding: MaxDSLR and Mintron 13V1C video camera
Process: MaxDSLR and Photoshop

atalas
11-11-2006, 12:18 PM
Nice shot Bill !

2020BC
11-11-2006, 12:20 PM
It's not too "light" ? I only have a CRT computer monitor, and it displays slightly differently to the new LCD screens. Hope the shadows are not too noisey ?

atalas
12-11-2006, 03:32 AM
It is a bit bright Bill,you probably didn't set the shadows end properly as you stretch .

Was this shot in light polluted skies or a dark site ? If It was try and use a LP filter( IDAS-LPS is good choice) because this will increase your dinamic range and help keep gradients down.

I would say you have a huge slope on the shadows end of your histogram which you don't want,and is telling you that you have a bright sky.

If you've stretched your backround that much you have taken away brightness levels that should of been allocated to other areas in the image.

PS only reads "255 brightness levels" meaning different shades of brighness and when there not allocated in the right place, other places don't get the brightness they need and you start getting a washed out look which leeds to low contrast in the image.

This will prevent your image from popping well and you end up with that very flat look.

So looking at this we see that too much brightness has been allocated to the background so that means that other brightness areas don't get what they need.
It is a very good shot Bill ! well processed and probably only these few issues are preventing It from being a great image.

Well done mate !

2020BC
12-11-2006, 08:00 AM
Thanks, Louie.:thumbsup:

Octane
12-11-2006, 01:57 PM
Bill,

You're having too much fun with that part of the sky!

You'll have a few images to show at CAS this week!

Lovely work.

Regards,
Humayun

Ric
13-11-2006, 08:02 AM
Hi Bill, thats a great image of the Tarantula.
It stands out very nicely against the backdrop of stars, I like the colours as well.

top stuff

spearo
13-11-2006, 07:05 PM
Hi
I echo Ric's comments
nice work
frank

Garyh
14-11-2006, 09:22 AM
I think you done a great job there for a unmodded camera, sharp and well guided...good job Bill
Cheers