Jump to content

sgl_imaging_challenge_2021_annual.thumb.jpg.3fc34f695a81b16210333189a3162ac7.jpg

Recommended Posts

I've just done two processings of the same set of images.

The first is a single frame, sharpened and exposure controlled in PS, and the second one is 58 frames stacked in Registax, sharpened and unsharp masked in PS.

Am I either missing some advantages of Registax, or is there just little point stacking with lunar images?

post-17621-133877783174_thumb.jpg

post-17621-133877783177_thumb.jpg

Edited by badgerchap
Link to post
Share on other sites

The major thing i've noticed when stacking dslr moon images is that i always have a lot less noise in the stacked image which lets me sharpen further and also makes for a smoother cropped image .

Link to post
Share on other sites
Yes, don't use a DSLR.

I dunno, I'm relatively pleased with it, for a widefield view. I am in the middle of a webcam mod , which might be a better, but until I finish it in the next few days, it's DSLR only :/ Plus I melted my EQ5 Motor today, but still wanted to mess around with the settings on the dslr so only an object that can be taken without tracking was any good!

Link to post
Share on other sites

The DSLR is great for wide angle and single shot colour images of the moon. For hi res work, you can't beat "web cam" avi style imaging. Being able to grab 1000s of frames allows you to "freeze" the seeing and use the best for processing. Noise drops by the square root of the number of frames stacked, so you really have to stack a lot of images to get a good improvement, after which, you can stretch, and sharpen more. The low noise of the DSLR on a bright target like the moon negates some of the advantages of the web cam.

Great images BTW!!!

Cheers

Link to post
Share on other sites

I often do Lunar work with a DSLR and generally take and stack around 60-80 frames in Registax 5. It does improve the s/n ratio and allow you to produce a much sharper image. I agree "movie" cameras allow you to take and stack thousands of frames and will beat an SLR for fine detail shots on the few nights of really good seeing that we get.

I've attached a DSLR stack to show the sort of thing I've managed to get: (64 frames with a Canon 1100D and a 120ED APO and 2x Barlow Processed in R5 and PS CS5 to sharpen)

29March2012Moonx2.jpg

Edited by Bizibilder
Link to post
Share on other sites

WOW! I gotta get me a barlow! That's my biggest problem at the moment for lunar - smal scope and a big sensor makes for a tiny image. Might see if I can get hold of a decent 3x Tal. Would help no-end with my WL Solar imaging too!

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.