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Topics - Mariner10

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1
General / Introduced lines into debayered images.
« on: 2019 February 16 19:58:38 »
Hi all,
Attached are images of the Horsed Head, one is after cosmetic correction has been applied and everything looks okay the other is after the debayering process has been applied. The problem should be obvious.
I've never had this occur before and I was hoping subsequent processing would remove the lines and gradients (if that's the correct terminology).
All images were taken with a OSC QHY8L, calibration files added.
The debayer matrix for that camera is GBRG which was applied and has successfully been applied in the past.
I tried all other debayer combinations but they all gave either the same result or made the same result worse.
Blink did not give any indication that there was going to be an issue and even when I applied the debayer process to just one sub the same result occurred.
Is there a problem here or will this effect be removed later in the processing procedures. I have already tried DBE and applied ABE afterwards both of which took out the vignetting but the lines are now more obvious.
Regards, Steve.

2
General / Error Message when using ImageCalibration
« on: 2019 February 02 22:44:23 »
Hi, I'm trying to calibrate by light frames with a superbias, master flat and master dark frames and I keep getting an error message, I've attached it as a Word document. Essentially It's saying there's incompatible image geometry and the calibration has failed. I've tried it without a flat, same result, without a bias, same result and without a dark with again the same result. I saved the originals in .xisf from .fits to see if that made any difference and again, they both failed.
Short of not using the calibration frames I'm lost as to where to go from here.
Thanks.

3
General / Balancing colour in HT
« on: 2019 January 24 21:50:03 »
Hi, I found a You Tube tutorial (quite old I think) which described the process of using HT and statistics to balance colour; : https://www.youtube.com/watch?v=1C_YMhLDlEc
This method no longer seems to work because I think there have been many updates (I couldn't get it to work) so I was wondering if there is a way of using the statistics for balancing the midtones in HT.
Cheers.

Steve

4
General / Preview Problems
« on: 2017 July 30 20:08:53 »
Hi people,
Two days ago (as a newbie) I was playing around with previews without any problems. So I was creating previews within previews, moving them to the work area etc. to see what could be done with them. I was creating them by using alt-N.
Yesterday I opened an image I was processing and tried to create a preview but alt-N wouldn't work and neither did the icons nor the options under the preview menu.
I shut PI down and opened it this morning and again I couldn't generate a preview until I read that they can be generated by going to the Image menu then down to the Mode sub-menu and selecting new preview (alt-N).
This worked fine using this method but even after creating a preview I still cannot use alt-N, I have to go back to the Image menu.
I notice that my preview icons have a small green circle with a plus sign in them which I'm not sure I've noticed before, could there be a setting somewhere that I need to do?
Any suggestions would be welcome.
Cheers.

Steve.

5
General / Image Calibration Error Message
« on: 2017 July 13 22:15:31 »
Hi people,
Can I ask for some advice please?
I’ve just started the processing process on a second image after completing my first one.
I'm right at the start of the process doing image integration.
As I'm a little slack I'm using the same calibration files (darks, bias and flats) as I did on the first image (without any issues) and I got the following error message on the second image:

ImageCalibration: Global context

Loading master calibration frames:
Loading calibration frame image:
C:/Users/User/Pictures/QHY8L/Master Calibration Files/superbias.fit
Reading FITS image: 32-bit floating point, 1 channel(s), 3328x2030 pixels: done
Normalizing sample values: done
40 FITS keywords extracted
Loading calibration frame image:
C:/Users/User/Pictures/QHY8L/Master Calibration Files/Master Dark.fit
Reading FITS image: 32-bit floating point, 1 channel(s), 3328x2030 pixels: done
Normalizing sample values: done
29 FITS keywords extracted
Loading calibration frame image:
C:/Users/User/Pictures/QHY8L/Master Calibration Files/Master Flat.fit
Reading FITS image: 32-bit floating point, 1 channel(s), 3328x2030 pixels: done
Normalizing sample values: done
35 FITS keywords extracted

Applying bias correction: master dark frame ...

Dark frame optimization thresholds:
Td0 = 0.00000000 (189 px = 0.003%)
*** Warning: The dark frame optimization threshold is probably too high (channel 0).
Computing master flat scaling factors ...
*** Error: Zero or insignificant scaling factor for flat frame channel# 0. (empty master flat frame image?)
<* failed*>

As I used the files on the first image with no issue I’m perplexed as to why I would be getting an error message now.
I tried doing another calibration of a flat file and using that instead of my original one and that too came up with the same error message.
Cheers.

Steve West

6
General / Colour Calibration
« on: 2016 December 31 23:21:43 »
Hi,
I have an image of the Rosette Nebula that is quite large and essentially full or red nebula and stars with very few dark areas.
When I want to do colour calibration and want to make the background darker I'm struggling to find an area dark enough for the preview box and the end result is quite ordinary.
I was wondering if there is anything that I can do to rectify this, if there's another process that will achieve the same result of darkening the background.
Thanks.

Steve.

7
General / Error Message when using ImageCalibration
« on: 2016 December 26 18:31:40 »
Hi, I've been using PI for processing some time now (still consider myself a newbie) but after taking images of my last two objects I keep getting an error message when using either ImageCalibration or BatchPreProcessing for both sets of images.
I use a QHY8L one shot colour and haven't had this issue before.
The error message reads:
ImageCalibration: Global context

Loading master calibration frames:
Loading calibration frame image:
C:/Users/User/Pictures/QHY8L/Master Calibration Files/superbias.fit
Reading FITS image: 32-bit floating point, 1 channel(s), 3328x2030 pixels: done
40 FITS keywords extracted
Loading calibration frame image:
C:/Users/User/Pictures/QHY8L/Master Calibration Files/Master Dark.fit
Reading FITS image: 32-bit floating point, 1 channel(s), 3328x2030 pixels: done
29 FITS keywords extracted
Loading calibration frame image:
C:/Users/User/Pictures/QHY8L/Master Calibration Files/Master Flat.fit
Reading FITS image: 32-bit floating point, 1 channel(s), 3328x2030 pixels: done
35 FITS keywords extracted

Dark frame optimization thresholds:
Td0 = 0.00049688 (14471 px = 0.214%)
Computing master flat scaling factors ...
s0 = 0.247188

Calibration of 13 target frames:
* Using 4 worker threads

Calibrating target frame 1 of 13
Loading target frame:
C:/Users/User/Pictures/QHY8L/Astronomy Photos/To be Processed/Helix Neb Springs Sep 2016/NGC 7293 Helix Neb-1-300s-0-C0.fit
Reading FITS image: 16-bit integers, 1 channel(s), 3040x2016 pixels: done

* Waiting for running tasks to terminate ...
*** Error: Incompatible image geometry
<* failed *>

I think I understand the problem but I'm not sure why I'm getting it. All lights are identical in size and format (FIT).
My masters have been used in processing in the past without any issues there and nothing has changed in that regard. My camera settings haven't changed either.
Any suggestions would be appreciated.

Steve

8
General / Processing CR2 (RAW) Files
« on: 2016 July 09 23:12:17 »
Hi,
Another newbie DSLR question (seems to be a few of these).
I simply cannot get my Canon DSLR images, saved as CR2 files, to process.
I can open them individually in PI no problems but whenever I try to pre-process I constantly get the following error message:

* Waiting for running tasks to terminate ...
*** Error: Incompatible image geometry
<* failed *>

I've tried the Batch Preprocessing script and the Image Calibration process and both come up with the same message.
I've set Pure RAW in the Format Explorer with the same result.
I've even tried opening each image and saving them in either the XISF or FITS extension first then processing and the same error message comes up.
My calibration files were done using a QHY8L OSC camera so I don't know if that is upsetting things or not.
Any suggestions would be appreciated.

Steve

9
Off-topic / Error message when using Batch Pre-Processing
« on: 2016 June 18 01:09:39 »
Hi everybody,
I'm very new to PixInsight but thanks to a whole bunch of tutorials the learning curve has commenced.
I generally use the Batch Pre-Processing script to commence processing of my images and every time I have I keep getting an error message (I've copied and pasted it below from the Process Console).
The problem doesn't appear to have a negative effect on the final outcome but there again as I always get the error message I don't really know.
So I would appreciate any help with it please. The error message is at the bottom of the script but I've included all the details in the event they are helpful.
Regards.

Steve (Mariner10)

51 FITS keyword(s) extracted.
Noise reduction: done
Structure map: done
Detecting stars: done
711 stars found.
Matching stars: done
672 putative star pair matches.
Performing RANSAC: done
671 star pair matches in 271 RANSAC iterations.
Summary of model properties:
Inliers     : 0.999
Overlapping : 1.000
Regularity  : 0.984
Quality     : 0.981
Root mean square error:
delta_RMS   :  0.116 px
RMS error deviation:
sigma_RMS   :  0.051 px
Peak errors:
delta_x_max :  0.457 px
delta_y_max :  0.373 px
Transformation matrix:
     +0.9999     +0.0000     -0.1417
     -0.0000     +1.0000     -0.2190
     +0.0000     -0.0000     +1.0000
scale       : 1.000
scale-X     : 1.000
scale-Y     : 1.000
rotation    :     -0.00 deg
dx          :     -0.14 px
dy          :     -0.22 px
Generating registered image
Homographic Projection / Lanczos-3 interpolation, c=0.30: done
Registration successful.
Writing output file: C:/Users/Steves/Pictures/Backyard EOS/QHY20160102/Springs 11.03.16/LMC/Batch Preprocessed/registered/LMC-5-120s-0-C0-2_c_d_r.xisf
Writing image: w=3328 h=2030 n=3 RGB Float32
72 FITS keyword(s) embedded.
Writing output file: C:/Users/Steves/Pictures/Backyard EOS/QHY20160102/Springs 11.03.16/LMC/Batch Preprocessed/registered/LMC-5-120s-0-C0-2_c_d_r.drz

Registering target image 10 of 10
Loading target file:
C:/Users/Steves/Pictures/Backyard EOS/QHY20160102/Springs 11.03.16/LMC/Batch Preprocessed/calibrated/light/debayered/LMC-5-120s-0-C0_c_d.xisf
Loading image: w=3328 h=2030 n=3 RGB Float32
*** Error: Parsing 32-bit floating point expression: conversion error:
1.?#QNAN (line=59,column=160)

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