Jupiter from Murrumbateman, July 22

Seanie, I'd give this one 6 stars out of 5

Sorry Dave, you can only have 5 - I already called 'shotgun'! :lol:

Truly impressive results and work!

Many congrats ... I am not sure I have seen finer work in relation to this planet.

I've made a short set of 3 video clips, for each of red,green and blue from the raw data for this image for those of you who have more bandwidth than you can use

I have downloaded them .... thanks for making them available.

What do you use for a luminance layer? An average of two of the RGB channels?

ayiomamitis - I don't do a separate luminance layer, this is straight RGB. I process each of the 3 channels separately and use Astra Image to combine the 3 final images.

regards, Bird

Bird,

Thanks for the additional info. Your result is even more impressive given it is only RGB.

I wanted to ask you some basic questions surrounding the processing (if you don't mind):

(1) do you use the complete disk for stacking or concentrate on a small contrasty feature such as the GRS? If the latter, do you use multiple alignment points?

(2) do you use the best frame as a base of reference or an "average" frame?

(3) what type of sharpening do you use?

Thanks for making the RGB files available. I just had a look and they are impressive.

Bird,

Thanks for the additional info. Your result is even more impressive given it is only RGB.

I wanted to ask you some basic questions surrounding the processing (if you don't mind):

(1) do you use the complete disk for stacking or concentrate on a small contrasty feature such as the GRS? If the latter, do you use multiple alignment points?

I use multipoint alignment in registax, 128 pixel window, maybe 3 or 4 points. If the GRS is visible then it's one of the points, other targets are polar spots etc.

(2) do you use the best frame as a base of reference or an "average" frame?

I use the best frame as chosen by registax, and then use the "create reference frame" option to make a reference that's a stack of the best 150 frames.

(3) what type of sharpening do you use?

I use both sharpening and smoothing to try and differentiate detail from noise.

Some wavelet sharpening in registax, then fft-filter lowpass smoothing in Astra Image, followed by either ME or LR deconvolution (sharpening) in Astra Image.

Later, in the Gimp, I use selective gaussian blur to dispose of more noise, and then selective unsharp mask to recover detail.

I treat each of the channels differently, optimising by eye the best set for each. I try and keep green nice and smooth, and don't bother about recovering too much detail in blue since we can't really see it anyway.

Thanks for making the RGB files available. I just had a look and they are impressive.

no problem!

regards, Bird