I have just got the PixInsight trial, so I have been trying to compare images to APP.
However I can't get PixInsight Star Alignment to work with images that were fine in APP.
I started off with the WeightedBatchPreProcessor script, which failed at the StarAlignment step, so now I have been trying running just StarAlignment with the debayered calibrated images.
The best I have get is about 5 pair matches:
I have uploaded this image and a reference one, plus a JPG from using the APP integration which I have stretched in PI Histogram tool (which is much better than APP... I hoped to just use PI for all the steps)
See my GDrive link: https://drive.google.com/drive/folders/1UwcadxBg6JglcRssQu-kthyZWNEpKu6_?usp=sharing
However I can't get PixInsight Star Alignment to work with images that were fine in APP.
I started off with the WeightedBatchPreProcessor script, which failed at the StarAlignment step, so now I have been trying running just StarAlignment with the debayered calibrated images.
The best I have get is about 5 pair matches:
Code:
Loading target file:
D:/Astro/ZWO_Galaxies/PixInsight/calibrated/light/debayered/M_51_Light_016_c_d.xisf
Loading image: w=4944 h=3284 n=3 RGB Float32
3 image properties
92 FITS keyword(s) extracted.
ICC profile extracted: 'sRGB IEC61966-2.1', 3144 bytes.
Noise reduction:
Structure map:
Detecting stars: done
20 stars found.
Computing intersection ...
Intersection:
R1 : { 421, 189, 4871, 3145} 31 stars
R2 : { 423, 182, 4873, 3138} 17 stars
alpha_21 : 0 deg
Matching stars:
6 putative star pair matches.
Performing RANSAC: done
* Previous attempt failed - this is try #2
useScaleDifferences=false
Matching stars:
10 putative star pair matches.
Performing RANSAC: done
* Previous attempt failed - this is try #3
useScaleDifferences=true
* Reference image: Limiting to 30 brightest stars.
Matching stars:
*** 4 star pair matches found - need at least six matched stars.
* Previous attempt failed - this is try #4
useScaleDifferences=false
* Reference image: Limiting to 30 brightest stars.
Matching stars:
8 putative star pair matches.
Performing RANSAC: done
* Previous attempt failed - this is try #5
useScaleDifferences=true
* Reference image: Limiting to 15 brightest stars.
* Target image: Limiting to 15 brightest stars.
Matching stars:
*** 3 star pair matches found - need at least six matched stars.
* Previous attempt failed - this is try #6
useScaleDifferences=false
* Reference image: Limiting to 15 brightest stars.
* Target image: Limiting to 15 brightest stars.
Matching stars:
*** 3 star pair matches found - need at least six matched stars.
* Previous attempt failed - this is try #7
useScaleDifferences=true
* Reference image: Limiting to 8 brightest stars.
* Target image: Limiting to 8 brightest stars.
Matching stars:
*** 5 star pair matches found - need at least six matched stars.
* Previous attempt failed - this is try #8
useScaleDifferences=false
* Reference image: Limiting to 8 brightest stars.
* Target image: Limiting to 8 brightest stars.
Matching stars:
*** 5 star pair matches found - need at least six matched stars.
*** Error:
*** Error: Unable to find an initial set of putative star pair matches.
I have uploaded this image and a reference one, plus a JPG from using the APP integration which I have stretched in PI Histogram tool (which is much better than APP... I hoped to just use PI for all the steps)
See my GDrive link: https://drive.google.com/drive/folders/1UwcadxBg6JglcRssQu-kthyZWNEpKu6_?usp=sharing