Congratulation, very good image. Achille ... http://www.lpl.arizona.edu/~rhill/images_moon/moon_montage20070127.jpg ... ___________________________________ ...
Hi Achille, your English is fine! I know about the drizzle resampling but normally find it gives me artifacts. I will try again but specifically using a...
Hi Dave, I know Cor is of that opinion, but I also believe that Cor would agree there is a limit for any given AVI as to how large a stack is valuable....
Hi all, On December 12, 2006 I had the session no. 2 out of 4 (the only one with the waning Moon at sunrise) I could have over that month. But it was the worst...
I got in the habit of using dark frames back when I was using an Astrovid 2000 video camera. That camera had so very much noise with a very distincting pattern...
Achille, nice image! These southern highland views are always interesting. Bob ... From: Achille Giordano To: lunar-observing@yahoogroups.com Sent: 1/31/2007...
Paolo, Excellent image despite the seeing. That certainly reveals aspects around Triesnecker not imaged before. I also like that sinuous rille in the upper...
Hi Stefan, I didn't mean to suggest this would be an easy thing to do :), but, as Tony suggested, varying the stack size and evaluating the contrast would seem...
I've tried drizzle up, down and sideways in Registax and Iris and always seemed to get more artifact then gain although it's always been at an oversampling of...
How SMART-1 has made European space exploration smarter http://www.esa.int/esaCP/SEMI0USMTWE_index_0.html From the above article: The flood of image data has...
Nice mosaic Rik. The only negative comment I can make is that overall I think the image is too dark. If you look at the histogram the midtone peak is down in...
Is this typical of the kind of noise you're seeing with short DMK stacks (200)? http://www.digital-flight.com/thebigeye/DMK%20noise.jpg I would agree, it's no...
The February 2007 issue of the A.L.P.O. Lunar Section's monthly newsletter, The Lunar Observer, has been uploaded to: http://www.zone-vx.com/tlo.pdf Bill...
Hi Tony - I would question whether this image shows DMK chip noise or artifacts from the processing routine. I use somewhat different workflow than most here...
No, the noise I saw was more patterned - actually a kind of zig-zag or cross hatch - I don't a good word for it. It was really only apparent in a fully...
I think that might be a chicken or egg question. The processing is certainly making the noise pattern visible but I'm pretty sure that if the variation wasn't...
An additional point on this is that to be really effective I'm pretty sure that the calibration frames need to be applied to each individual frame in the AVI...
Boy, yes. Not the same thing at all. It looks a lot like readout noise to me but I can't be sure. I get something similar if I take a raw DMK frame and hit it...
Ok, I think I've found part of the answer on this. Look at this sample frame test. Both are 2000 frame DMK stacks with the same level of wavelets applied. The...
I believe Registax applies it to each AVI frame and not just to the final stacked image. If memory serves I asked Cor that once upon a time way back in the...
Night and day difference. I always keep things in 16 bit mode until the image is posted so that's why I haven't seen that before. Bob ... From: Tony Gondola ...
I haven't tried bias frames - sounds like a worthwhile experiment. Flats are useful to remove vignetting and dust donuts, but I doubt that vignetting is a...
What's the most telescope-friendly one of all the NASA-nicknamed lunar formations? Barbara Mesa could be that one. It is depicted near the bottom of Antonin...
Hi Guys This processing discussion is way above my technical abilities, but one thing I've noticed in the past, is that if I adjust 'levels' in the final...
Hi Oliver, I see what you mean - there certainly are considerable similarities. And interesting that going to a larger bit depth might have been a cure in your...
Hi Geoff, Well now that is interesting! I just tried it and it did reduce the noise. Thank you for the tip! I don't really understand why this works, but ...
Bob, It seems to me the noise in your image is the same type of noise as I get after wavelets etc, but maybe a bit more patterned as a result of more...
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