ImageSolver fails

Feb 21, 2021
8
0
Hello,
a processed images I took in 2020 with my Celestron 11" in the focus. I got following final image and wanted to do ImageSolver and then PhotometricColorCalibration.
Starting with the Imagesolver it failed. I put the coordinates from M51 and started it, and got:


run --execute-mode=auto "C:/Program Files/PixInsight/src/scripts/AdP/ImageSolver.js"



Processing script file: C:/Program Files/PixInsight/src/scripts/AdP/ImageSolver.js



Searching in Sesame:


1562 bytes transferred in 0.48 s @ 3.18 KiB/s



Gaia: Global context

*** Error: No database files have been selected.

16.464 ms

* Using an automatically calculated limit magnitude of 12.24.

* Using the automatically selected GaiaDR2 catalog.

Seed parameters for plate solving:

Center coordinates: RA = 13 29 52.698, Dec = +47 11 42.93

Resolution: 1.526 as/px

Starting StarAlignment iteration



Downloading Vizier data:

http://vizier.u-strasbg.fr/viz-bin/asu-tsv?-source=I/345/gaia2&-c=202.469575 47.195258&-c.r=3.085281&-c.u=deg&-out.form=|&-out.add=_RAJ,_DEJ&-out=pmRA&-out=pmDE&-out=Source&-out=Gmag&-out=RPmag&-out=BPmag&-out=Plx&-out=RV&-out=Rad&-out=Lum&Gmag=<12.24

118120 bytes transferred in 4.67 s @ 24.71 KiB/s

Catalog Gaia DR2: 854 objects.

* Using the triangle similarity star matching algorithm.



StarAlignment: Processing view: Master_Lights_M51_ISO4000_120s_20200325

C:/Users/Alexander/AppData/Local/Temp/stars.csv:

Scanning star data: done

196 stars.

Master_Lights_M51_ISO4000_120s_20200325:

Structure map: done

Detecting stars: done

908 stars found.

Matching stars: done

70 putative star pair matches.

Performing RANSAC: done

* Previous attempt failed - this is try #2

useScaleDifferences=true

Matching stars: done

60 putative star pair matches.

Performing RANSAC: done

* Previous attempt failed - this is try #3

useScaleDifferences=false

* Target image: Limiting to 250 brightest stars.

Matching stars: done

39 putative star pair matches.

Performing RANSAC: done

* Previous attempt failed - this is try #4

useScaleDifferences=true

* Target image: Limiting to 250 brightest stars.

Matching stars: done

48 putative star pair matches.

Performing RANSAC: done

* Previous attempt failed - this is try #5

useScaleDifferences=false

* Reference image: Limiting to 125 brightest stars.

* Target image: Limiting to 125 brightest stars.

Matching stars: done

32 putative star pair matches.

Performing RANSAC: done

* Previous attempt failed - this is try #6

useScaleDifferences=true

* Reference image: Limiting to 125 brightest stars.

* Target image: Limiting to 125 brightest stars.

Matching stars: done

38 putative star pair matches.

Performing RANSAC: done

* Previous attempt failed - this is try #7

useScaleDifferences=false

* Reference image: Limiting to 60 brightest stars.

* Target image: Limiting to 60 brightest stars.

Matching stars: done

17 putative star pair matches.

Performing RANSAC: done

* Previous attempt failed - this is try #8

useScaleDifferences=true

* Reference image: Limiting to 60 brightest stars.

* Target image: Limiting to 60 brightest stars.

Matching stars: done

22 putative star pair matches.

Performing RANSAC: done

* Previous attempt failed - this is try #9

useScaleDifferences=false

* Reference image: Limiting to 30 brightest stars.

* Target image: Limiting to 30 brightest stars.

Matching stars: done

11 putative star pair matches.

Performing RANSAC: done

* Previous attempt failed - this is try #10

useScaleDifferences=true

* Reference image: Limiting to 30 brightest stars.

* Target image: Limiting to 30 brightest stars.

Matching stars: done

11 putative star pair matches.

Performing RANSAC: done

* Previous attempt failed - this is try #11

useScaleDifferences=false

* Reference image: Limiting to 15 brightest stars.

* Target image: Limiting to 15 brightest stars.

Matching stars: done

*** 5 star pair matches found - need at least six matched stars.

* Previous attempt failed - this is try #12

useScaleDifferences=true

* Reference image: Limiting to 15 brightest stars.

* Target image: Limiting to 15 brightest stars.

Matching stars: done

*** 0 star pair matches found - need at least six matched stars.

* Previous attempt failed - this is try #13

useScaleDifferences=false

* Reference image: Limiting to 8 brightest stars.

* Target image: Limiting to 8 brightest stars.

Matching stars: done

*** 0 star pair matches found - need at least six matched stars.

* Previous attempt failed - this is try #14

useScaleDifferences=true

* Reference image: Limiting to 8 brightest stars.

* Target image: Limiting to 8 brightest stars.

Matching stars: done

*** 0 star pair matches found - need at least six matched stars.

* Previous attempt failed - this is try #15

useScaleDifferences=false

* Target image: Limiting to 500 brightest stars.

Matching stars: done

57 putative star pair matches.

Performing RANSAC: done

* Previous attempt failed - this is try #16

useScaleDifferences=true

* Target image: Limiting to 500 brightest stars.

Matching stars: done

52 putative star pair matches.

Performing RANSAC: done

*** Error: Unable to find an initial set of putative star pair matches.

<* failed *>

*** Error: The image could not be aligned with the reference star field.

Please check the following items:

  • The initial coordinates should be inside the image.
  • The initial resolution should be within a factor of 2 from the correct value.
  • Adjust the star detection sensitivity parameter, so that the script can detect most of the stars in the image without mistaking noise for stars.
  • The catalog should be matched to the image. Choose the appropriate catalog and magnitude filter, so that the number of stars extracted from the catalog can be similar to the number of stars detected in the image.

*** Error: Unable to plate solve image: Alignment failed.

This usually happens because the initial parameters are too far from the actual metadata of the image.


Maybe you can help me?
Yours sincerely,

Alexander
 

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