Jupiter 22/04/2015

[james_screech]

8" SCT, 2.5x powermate, ASI120MM ZWO RGB filters 5000 frames stacked for each filter.

James

[michael.h.f.wilkinson]

Nice detail and good colour balance

[Pete Presland]

That is very promising imagesome nice detail showing, but there is some red dots along the left hand side of the disc. Are these from a miss-aligned "R" channel?

[james_screech]

That is very promising imagesome nice detail showing, but there is some red dots along the left hand side of the disc. Are these from a miss-aligned "R" channel?

They are due to WinJupos de-rotation and combination of the different channels, it sometimes leave artifacts at the limb.

James

[Pete Presland]

They are due to WinJupos de-rotation and combination of the different channels, it sometimes leave artifacts at the limb.

James

Is that using it to derotate and combine all in one go?  I have never been brave enough to try Winjupos is it easy to learn?

[cgarry]

They are due to WinJupos de-rotation and combination of the different channels, it sometimes leave artifacts at the limb.

James

Changing the LD value is your friend here!

Cheers,

Chris

[james_screech]

Is that using it to derotate and combine all in one go?  I have never been brave enough to try Winjupos is it easy to learn?

Yes it was de-rotation and combine. I don't use most of the features, I mainly use the de-rotate RGB, which also requires image measurement. I have tried avi de-rotate but find I get better images with shorter 1min avis with high gain. For example with Jupiter I'm using an exposure of 9 - 10 ms and a gain of 90 on my ASI120MM, 8" SCT and 2.5x powermate and stack 5000 of the approx 6000 frames.

James

[james_screech]

Changing the LD value is your friend here!

Cheers,

Chris

I've never been able to figure out just what LD does, it brightens the limb during measurement but I didn't think it did anything else.

James