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Old 11-05-2006, 10:32 PM
Dennis
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Vitello & Doppelmayer with MAPs

Hello,

Here are a couple of comparison images of Vitello & Doppelmayer, captured on 9th May 2006 at 19:53 AEST.

The seeing was swimming over the avi so I decided to follow up on Mike’s earlier suggestion and selected 5 separate points for alignment in Registax – refer to 2nd image for the 5 MAPs selected (white squares).

A lot of hard work and a bit fiddly, but I think it was worth the effort. What do you think? Can you see the differences between the MAP aligned and non MAP aligned versions?

Cheers

Dennis
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Click for full-size image (Vitello MAP Points.jpg)
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Old 13-05-2006, 09:42 AM
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ozzmosis
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yes indeed the top image is clearer for sure,, as soon as u look at it you see the difference. am sure gona do that imaging process it really works well. i can t wait to get a clear sky!
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Old 13-05-2006, 10:45 AM
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Robert_T
aiming for 2nd Halley's

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Hey Dennis, I don't know how you get the quality of either shot under swimmy seeing... mine always come out way blurrier unless the seeing is spot on. Not much in it to my eyes... looking carefully there's a little more fine detail in upper image - the larger crater upper center and I can seesome of the very smal craters clearer in that.

Did you use the same wavelets in each case?

cheers,
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Old 13-05-2006, 12:55 PM
Dennis
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Quote:
Originally Posted by Robert_T
Hey Dennis, I don't know how you get the quality of either shot under swimmy seeing... mine always come out way blurrier unless the seeing is spot on. Not much in it to my eyes... looking carefully there's a little more fine detail in upper image - the larger crater upper center and I can seesome of the very smal craters clearer in that.

Did you use the same wavelets in each case?

cheers,
Hi Robert

Wavelets were 1=20 for all the images. Here is a screen print showing how I stitch the multiple aligned sub-images to a master image. When I drag and drop a sub-image onto the master, I set it to negative so I can look for the null point to register it as best as I can. That is why there is a black square – it is the negative sub-image overlaying its positive twin on the full size master image.

Swimming meant that there were waves of good seeing passing over the image, so that when certain regions were very sharp and fully resolved, adjacent regions were more blurry or indistinct until the sharp wave hit them.

Cheers

Dennis
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