GradientXterminator surprise!

[avandonk]

Just got a license for GradientXterminator and did a few pictures with it after Photoshop etc. Then I did one with GradientXterminator before any other processing (after stacking with Registar).Then adjusted levels etc in PS then used GradientXterminator again.
The second pic is the same starting data but using GX last.

This is the result and its better than using GradientXterminator last. I don't know what happened.
Larger version 800k
http://users.bigpond.net.au/avandonk/OR_RM_HH.jpg

Bert

[janoskiss]

Don't know what is up with the GX, but you are really a master of the deep with that ED80 of yours, Bert. Such awesome images from such a little scope. :)

[avandonk]

Sorry should have given details, taken with a 300mm F2.8L at F2.8.
8x60sec exposures at ISO 1600. LPR filter. Stacked with Registar.

Bert

[Octane]

Bert,

I'm outside in the cold taking dark frames after photographing Crux again, but this time with a serial cable that I built today.

I have been staring non-stop at that first image for about five minutes now.

Truly beautiful work, mate.

I hope to be able to take images like that one day.

Regards,
Humayun

[avandonk]

I will put up a higher resolution one tomorrow. I only have 10M of webspace. Thanks for the comment Humayun, but like most pop stars I am not an overnight success. We all start somewhere and can only get better with hard work. When I see what can be done only makes me want to learn more.

Bert

[Itchy]

Hi Bert,

Your examples demonstrate the importance of STARTING with as flat a field as you can. That way, the stretching process doesn't enhance the faults as well as the real data. Better still is to apply flats to the subexposures to eliminate it before stacking.

Nice shot BTW

Cheers

Cheers

[RB]

Thanks for the tip Itchy.

:)

[tornado33]

with GX, when you draw around the object in Photoshop, do you select Inverse before running GX? If not then it may make the gradient worse, I found that out the hard way myself :(

Hope you dont mind, but I ran the 2nd pic through my GX, it seems to have smoothed out the gradient :)
Scott

[avandonk]

Hi tornado33 don't mind at all. Yes I did do the inverse. The difference between the two pictures was GX before PS and PS before GX. If you want can send you the original raw frames of anything and then you can play with 73m tiffs. Aquiring the images at the best quality is hard enough but then the digital processing is a black art. Still, it keeps us off the streets and out of the pubs.

Bert

[tornado33]

HI Bert
yep the digital processing sure is a black art often I go over old images to find I can improve them.
Yes feel free to send some Raws to
tornado33@gmail.com
and I will see what I can do :)
I will soon be sending some of mine to Tony to see what he and Images Plus can do, it might be easier to use than Iris which is what I also use here
Scott

[avandonk]

I used a PS plug in called VignetRemover first and then GX and then levels and curves.
http://users.bigpond.net.au/avandonk/Or_rm_hh2.jpg

Seems to have worked much better.

Bert

[[1ponders]]

Beautiful images guys.

Scott and Bert. What settings are you using for the GX? What areas are you selecting and then inverting before applying GX

[avandonk]

I just used the settings as in the tutorial. And the pic below shows the approximate areas.

Bert

[tornado33]

Yes thats how I did it too, I selected similar areas in the image.
Scott

[davidpretorius]

you guys do some truly awesome stuff!! well done!