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Messages - acmalko

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1
Bug Reports / Re: Translucent frames
« on: 2019 December 15 02:03:49 »
Many thanks Juan and the Pixinsight's team for your job, hunting bugs is not an easy task and need a lot of time.

Today, with the v1.8.8-3, my bug was solved so it probably was an openGL bug with my MSI GTX970 card and its driver or the effect of manual desintallation

No more unreadables translucents frames  ;D

2
Because with BayerDrizzle, there is no interpolation.
BayerDrizzle will use subs before debayer. We debayer them only for alignment.

I usually use it with scale=1 and Drop Shrink=1

3
General / Re: Photometric Colour Calibration
« on: 2019 November 09 01:49:33 »
You're right, probably too early to conclude. It was just a question about our respective experiences.
Let's check the Vizier's servers

4
General / Re: Photometric Colour Calibration
« on: 2019 November 08 23:45:39 »
Yes I do.
Since the 1.8.8 version.

Try UCAC3 catalog

5
General / Re: Calibration - Master Bias Vs Dark flats
« on: 2019 November 03 23:24:59 »

6
General / Re: Starnet Installation Problem (Checkpoint error)
« on: 2019 November 03 23:23:59 »
https://pixinsight.com/forum/index.php?topic=13691.msg82710#msg82710

Well known bug
"Open the Process Console and paste the following command:

cd "C:/Program Files/PixInsight/bin"

After that, StarNet will work. I will address this issue in the next version."

7
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 :)

8
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.


9
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

10
Same thing !
Unable to reproduce error

Good job bulrichl

11
Perhaps should we analyse a flat rather than the masterflat ?

12
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.

Bernd

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

What about the idea of problematic underexposed red channel ?

13
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

14
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 ;) )

15
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


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