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 Post subject: Registax wavelets
PostPosted: Sat Jul 07, 2012 12:06 pm 
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Joined: Sun May 25, 2008 12:48 pm
Posts: 8051
Location: UK
File this under "why didn't I try this sooner?"

Short version: I played with the wavelet sharpening function in registax. This happened:

Image Image
Left: unprocessed output after stacking in AutoStakkert of sun in H-alpha. This is representative of the raw output of single frames other than the lower noise.
Right: after loading file into registax and randomly playing with wavelet settings

I think it no understatement that this makes a night and day difference for surface detail, which is otherwise lost in the low contrast. Previously I have tried different methods like aggressive unsharp and even HDR techniques to try and bring it out with varied success.

Image Image

This deliberately higher exposed shot of the same region was intended to bring out the prominences. They're visible even before processing, but after it sharpens up nicely.

In both cases there's some issues with bright/dark rings on high contrast edges like you would get with unsharp, so I'll have to play about with optimising that some more.

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Canon DSLRs: 7D2, 7D1, 5D2, 1D, 600D, 450D full spectrum, 300D IR mod
Lenses: EF 35/2, 85/1.8, 135/2+SF, 28-80 V, 70-300L, 100-400L, TS-E 24/3.5L, MP-E 65, EF-S 10-18, 15-85
3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 50/1.4A, 150 macro, 120-300 f/2.8 OS
Compacts: Sony HX9V, Fuji X100.


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 Post subject: Re: Registax wavelets
PostPosted: Sun Jul 08, 2012 1:17 pm 
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Joined: Sun May 25, 2008 12:48 pm
Posts: 8051
Location: UK
Still playing with wavelets. I also note it's in PixInsight although no easier for me to comprehend what the different options do!

Image Image
Jupiter 20 Aug. 2009.
2650mm f/26 1/10s ISO400 on 50D

Left: 7/17 jpeg shots stacked , presumably with whatever Registax version was current in 2009.
Right: unknown of 17 jpeg shots stacked with Registax 5.1. Seems to look nicer than Registax 6, at least with the various settings I've randomly plugged in.

_________________
Canon DSLRs: 7D2, 7D1, 5D2, 1D, 600D, 450D full spectrum, 300D IR mod
Lenses: EF 35/2, 85/1.8, 135/2+SF, 28-80 V, 70-300L, 100-400L, TS-E 24/3.5L, MP-E 65, EF-S 10-18, 15-85
3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 50/1.4A, 150 macro, 120-300 f/2.8 OS
Compacts: Sony HX9V, Fuji X100.


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