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Messages - acmalko

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General / Re: Masked stretch and big star appearance
« on: 2019 September 18 12:07:36 »
I have the same problem (Canon EOS), especially after a SPF deconvolution.
I use the method above.
Actually, I mix MaskedStretch and HistogramTransformation

Thanks for the idea of convolution on the stars :)

General / Re: Processing STC Dual band filter images
« on: 2019 August 11 12:59:51 »
I've seen this filter recently and I'd love to enhance an RVB picture with Ha and/or OIII. Not for imaging directly.

General / Re: DSLR - Cosmetic Correction and Dithering
« on: 2019 July 30 23:09:09 »
Yes !
You still have hot or deviant pixels after the masterdark substraction

Same thing !
Unable to reproduce error

Good job bulrichl

Perhaps should we analyse a flat rather than the masterflat ?

In this outputs of Statistics, the output format was set to 'Normalized Real [0,1]'. By multiplying these values by 65536, the 16-bit [0,65535] representation ar obtained.

This means that the CFA channels have following means (and in parentheses: the medians):
Code: [Select]
CFA0:  9728  (9797)
CFA1: 35053 (35190)
CFA2: 35058 (35196)
CFA3: 35119 (35278)

The ADC of the ASI294 has only 14 bit, but the data of the ASI294 are multiplied by factor 4 to the range 0 to 65535 by the camera driver. The values above for the green and blue channels are therefore OK.


Humm ok, I understand ;) There's no overexposition

What about the idea of problematic underexposed red channel ?

Oh and I think the statistics and histogram processes are in 16bits but you use a 14bits camera so personnally, I multiply by 4 the statistics numbers

Thanks for your explanations

A question to help me understand: had you 29.000 ADU on each channel ?
Secondly: why such high value ? (I know the theory, this is a serious question ;) )

Flats over exposed, yes, that's exactly what I mean. In your case, the green and blue channels are much more high than the red one, certainly saturated, overexposed. You can try without the masterflat, I'm pretty sure you'll have a better result of your stack.
Why is it ok with DSS ? I don't know
How much expose your flat ? I don't know actually. Mines are done easily with a canon camera and I use a pink screen to be sure that the 3 channels are in the same area of an histogram

Ok, bad masterflat, saturated.

You can presume it by differents ways.
1- problem of color on your stack
2- you still see dust after pretreatment


show us your masterflat...

General / Re: Suppress rejected subs data in SFS?
« on: 2019 June 24 10:47:11 »
Perhaps output choosen subframe, close SFS and re-open it with newly weighted subs ?

It works well, thanks :)

Tried 128 et 8 size stride. The last one was very time consuming  :sealed: ;D ;D

I've re-read the instructions written in the stand-alone version to remember what "stride" meant
Perhaps add those instructions in the readme file of the pi version ;)

Good job :) and thank you

General / Re: Jupiter Wavelet Processing using MLT
« on: 2019 June 21 08:29:22 »
Very nice, more subtle and pleasant result than mine. Definitely, I am not a planetary processor by any stretch of the imagination :)

You have applied restoration and deconvolution in unconventional ways, guessing a PSF by trial-error work. Despite that, the result is nice and plausible visually, and of course not more 'by eye' than an arbitrary multiscale transformation. Nice work.

Here is the result of my median-wavelet transform with the correct color balance:

Compared to yours, my version is definitely in the firing line. That's what happens when somebody trained to process deep-sky data dares playing with planets!  :cheesy:

Thanks :)
Of course, I tried many parameters to achieve a good result using RestorationFilter wich is the main process.
Deconvolution or MMT are not so good for me

General / Re: Jupiter Wavelet Processing using MLT
« on: 2019 June 21 08:23:17 »

I personnally use Pixinsight just after AS!3
I didn't knew how to align channel but thanks Juan, here I used Registax but you can tick the right case in AS!3 for a good result too

(some grammatical errors could appear, english is not my native language)

-channel alignment Registax
-Restoration filter
-Color calibration
-Saturation etc...

So did you use Registax in addition to PixInsight?

No, I only use Registax as a fast way to align rgb channels. I very dislike this software.

Don't forget the "RGB align" option in Autostakkert

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