Another April 9 Jupiter!

[matt]

I'm experimenting with image scale and processing at the moment.

To avoid the dreaded onion rings I am not going so hard on the wavelets.

It makes for a softer, less detailed image, but I think it's still aesthetically pleasing

I guess I'll have to wait for even better seeing for the data to allow for stronger processing.

This might look a little bright on some screens

It looks OK on mine.

This is a Mitchell 1.5x resample

[bird (Anthony Wesley)]

You could also try loading this into astra image, splitting into RGB, deconvoluting and then recombining.

cheers, Bird

[davidpretorius]

another nice one.................have you taken any B/W DMK's just to see if it is the camera???

[matt]

Cheers DP.

Been a bit slack as far as the DMK goes.

Will try to make an effort tonight because the comparison with the ToUcam should prove interesting.

I'm just having so much fun. I don't want to cruel it by having to worry about filter wheels and filters and blah blah blah...

I'll get around to it............one day

[davidpretorius]

yes, give it a rip........i was sooooo pissed at the filter stuff the other day, i whacked in the toucam..........i am now friends again with the filter and lumenera, but it was fun to swap it around.................and yes the seeing stayed crap for both cameras!!!

[matt]

This was an interesting experiment.

I notice that when I get to the Create Reference Frame stage of Registax and do a 1.5x Mitchell resample, the composite of the best 50 frames for the reference always looks great, but then the finished version (comprising more frames) falls away after I apply any additional processing.

That got me thinking. When it gets to the stack stage, perhaps I should only take the best 50-100 frames if I'm going to do my resampling in Registax.

So here's the result. It's a little grainier (coz of fewer frames) but overall less afflicted by onions rings.

Interesting

[davidpretorius]

last season, ice was down to 100 frames stacked, I sort of drew the line at 150 to 200 frames.............what sort of quality % are you getting in REG4 with the limit 95%, 85%???

[matt]

Originally Posted by davidpretorius

what sort of quality % are you getting in REG4 with the limit 95%, 85%???

Not sure I understand what you mean, Davo

I have the quality % set at 90

[davidpretorius]

if your best 50 frames are creating very nice images, then you may want to cut it off like you say to less images.

if you move the slider back and forth after the initial alignment and quality sort, you can get a good ideas where the images start to go wayward.

limit the number of images there and then further reduce at the stacking stage.

obviously less images to play with means less wavelets for worse seeing, but well worth the testing.

[matt]

Originally Posted by davidpretorius

if your best 50 frames are creating very nice images, then you may want to cut it off like you say to less images.

if you move the slider back and forth after the initial alignment and quality sort, you can get a good ideas where the images start to go wayward.

limit the number of images there and then further reduce at the stacking stage.

obviously less images to play with means less wavelets for worse seeing, but well worth the testing.

Yep. That's exactly what I do, Davo.

I take the best 90% from the first run, and then cull it down even further at Stacking.

But I think the secret is to stack that fewer number of frames when (as you say) the seeing is very nice.

I'm going to go with something between 100 and 200 for a while and see what happens.

Obviously, it will depend on the seeing.

Thanks, mate