What operating system are you using?
Not in front of the computer right now but not sure i was getting more than one object to select.
The steps i’ve been going through are:
- Load your image as is (no histogram transformation, stretch, no selection in the picture or the like)
- Type eta carina in the search box
- Press Find
- Select the object (doesn’t matter that much in fact, it’s just a matter of specifying roughly the center of the image. Differents catalogues will return slightly different values but all RA/Dec should match from one to the other).
- Fill in focal length and pixel size
- Press OK
Anything you may be doing differently?
Maybe you could paste the part of the log related to this here, see if we can spot anything peculiar?
C.
Hi Vincent,
Thank you for your interest. My PC configuration is;
Intel(R) Core™ i7-4790K CPU @ 4.00GHz
Installed RAM 32.0 GB
System type 64-bit operating system, x64-based processor
Windows 10 Home Version 21H2.
Cs,
Tony
Please, disable your AV for testing purpose and retest the color calibration.
My procedure is exactly as you have described Cissou. Since my last post I reinstalled Siril again & plate solving / photometric calibration is working again so I believe we have ruled out any problem with my data, my procedure & Sirils ability. Reinstallation rectifies the issue (for how long remains to be seen), I believe the problem is related to the OS. I have looked at the system event viewer but couldn’t find any evidence relating to Siril there. How to diagnose this any further within the OS is beyond my capabilities but maybe the information from this thread can help someone more tech savvy to isolate the issue.
Cheers,
Tony
Yes I did try that Lock. It made no difference unfortunately. I reinstalled Siril which has solved the problem for the time being at least. My belief is that the OS is responsible somehow.
Cheers,
Tony
Could you show me your output logs?
Here is a screenshot of an image I just loaded which Siril plate solved successfully after the reinstall.
I’m not sure it’s possible access any output logs from any earlier sessions prior to the reinstall.
Unfortunately I didn’t save any from the failed sessions.
Cheers,
Tony
I thought I’d post an update to share my expeience with this issue & thank Cissou & Lock for their interest and support. My last post showed plate solving worked again after reinstalling Siril, following that I closed Siril & opened it again a few hours later. As you might have guessed plate solving was no longer working.
If look at the output log only 2 seconds elapse before getting the “Fail” notice, perhaps this is something of note. So after several failed attempts I reinstalled Siril again & plate solving worked like a charm every time & continued to do so as long as I kept Siril open. When I restart Siril plate solving fails again. This is the case consistently. So what happens to Siril after it is closed to prevent plate solving working when it is reopened again? Your guess is as good as mine. Is it my computer or is my experience consistent with other users with the same OS? All I can say is that reinstalling Siril solves the issue 100% of the time. Perhaps someone else with the same problem can chime in?
Cheers,
Tony
I am on windows 11 and have no issues. Just an informational post here
Che
If this was a consistent behaviour we would probably have been notified about it by many users. But since you’re with Windows, there is a random factor of the good will of microsoft and all other installed software: antivirus, firewalls and similar security systems, as siril is connecting to a remote website for this operation.
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Agreed, thank you for your input Vincent. It seems as though this issue is peculiar to my OS/PC. I’ll try to trace it via Windows logs.
Cheers,
Tony
Could you try again with disabled “Using cache” option?
Hi, been wondering about this for a while, just joined the forums to ask (gotta break this up… max 4 links per post?)
I have also never successfully performed Photometric Color Calibration, I always get:
I’ve tried 4-5 times following these instructions.
I’m on linux version 1.0.3.
I have tried various things like making selections, changing magnitude limit and catalog, crazy guesses for focal length. I have not found a way to specify multiple “reference stars”, searching another star replaces the first one.
I am using this camera, this lens, and these settings.
Here’s the FIT file of my stacked lights that I want to color calibrate: wetransfer
Here’s my
Log output
14:51:07: No catalog
14:51:32: No catalog
14:51:43: No catalog
14:51:57: No catalog
14:52:34: Solving on selected area: 0 0 4481 2623
14:52:44: Findstar: processing…
14:52:45: Catalog APASS size: 89 objects
14:52:45: Plate Solving failed. The image could not be aligned with the reference stars.
14:53:00: Solving on selected area: 0 0 4481 2623
14:53:09: Findstar: processing…
14:53:09: Catalog APASS size: 89 objects
14:53:10: Plate Solving failed. The image could not be aligned with the reference stars.
14:56:10: Solving on selected area: 0 0 4481 2623
14:56:44: Findstar: processing…
14:56:44: Catalog NOMAD size: 430 objects
14:56:44: Plate Solving failed. The image could not be aligned with the reference stars.
15:00:50: Solving on selected area: 0 0 4481 2623
15:00:52: Findstar: processing…
15:00:52: Catalog Bright stars size: 56 objects
15:00:53: Plate Solving failed. The image could not be aligned with the reference stars.
15:00:57: Solving on selected area: 0 0 4481 2623
15:00:59: Findstar: processing…
15:00:59: Catalog Bright stars size: 56 objects
15:00:59: Plate Solving failed. The image could not be aligned with the reference stars.
15:01:03: Solving on selected area: 0 0 4481 2623
15:01:11: Findstar: processing…
15:01:13: Catalog PPMXL size: 77068 objects
15:01:13: Plate Solving failed. The image could not be aligned with the reference stars.
15:04:14: Solving on selected area: 0 0 4481 2623
15:06:50: Findstar: processing…
15:06:51: Catalog Gaia EDR3 size: 29949 objects
15:06:51: Plate Solving failed. The image could not be aligned with the reference stars.
15:18:31: Solving on selected area: 0 0 4481 2623
15:18:43: Findstar: processing…
15:18:55: Catalog APASS size: 23968 objects
15:18:55: Plate Solving failed. The image could not be aligned with the reference stars.
15:23:53: Saving FITS: file cropped_r_bkg_pp_light_stacked.fit, 3 layer(s), 4481x2623 pixels
15:25:55: Saving FITS: file /home/kujo/Pictures/photocalibration_could_not_be_aligned.fit, 3 layer(s), 4481x2623 pixels
15:34:37: Solving on selected area: 0 0 4481 2623
15:34:47: Findstar: processing…
15:34:58: Catalog APASS size: 26494 objects
15:34:58: Plate Solving failed. The image could not be aligned with the reference stars.
15:40:59: Solving on selected area: 0 0 4481 2623
15:41:12: Findstar: processing…
15:41:23: Catalog APASS size: 26494 objects
15:41:24: Plate Solving failed. The image could not be aligned with the reference stars.
15:43:28: Solving on selected area: 0 0 4481 2623
15:44:06: Findstar: processing…
15:44:17: Catalog NOMAD size: 29831 objects
15:44:17: Plate Solving failed. The image could not be aligned with the reference stars.
35mm is really wide field. Therefore astrometry is not easy because field has distortion we can’t handle yet.
Hello,
I too am having problems getting the Photometric Color Calibration to plate solve an image. I have an image taken with a 50mm lens on a full frame DSLR camera. I tried all the suggestions on how to get to it plate solve, nothing works.
Is 50mm too wide to expect Siril to plate solve an image? I’ve given up trying to plate solve a image taken with a 14mm lens, that is very wide and it has complex distortions, but I was really hoping a simple 50mm would work.
What is the expected widest focal length that should be able to be plate solved?
The reason I want to use Photometric Color calibration is to get accurate colors of a star field. The normal color calibration doesn’t create correct colors for me.
I can share the 50mm image if anyone wants to try getting it to plate solve.
Thanks
Nick
No 50mm is not too wide. You should do it.
Try to select an object before platesolving.
Thank you for the reply lock042.
I tried what you suggested, and it did not work. I will reinstall Siril and see it that makes a difference. I have uploaded the result.fit file if you want to try yourself. (link below) The file size is 291,856,320 bytes.
The file has a bit of a blurred landscape on the bottom edge. I tried cropping it, but still it still did not plate solve. The star 45 Oph is almost in the center and that’s the object I selected before trying to plate solve. This was taken with a 50mm lens, 5.97um pixel pitch, all the photometric data looked OK.
Thanks,
Nick