Hello,
I am using the English version 11 of Prism.
When I select Analysis -> Quality check (stelar images), the resulting table does not compute the FWHM of my stars in a few images.
How do I set Prism to compute the FWHM of stars in the image?
Thank you.
FWHM values for images
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- Messages : 4530
- Enregistré le : 18 juin 2009, 22:41
- Localisation : 42
Re: FWHM values for images
I need to see an image. Please share one.
If you have a FWHM > 15 pixels this will not work and indicate that you MUST bin your image and have a proper sampling rate.
If you have a FWHM > 15 pixels this will not work and indicate that you MUST bin your image and have a proper sampling rate.
Cyril Cavadore, ALCOR-SYSTEM, Auteur de PRISM
http://www.alcor-system.com
Pour reporter vos problème, la marche à suivre est ici
viewtopic.php?f=7&t=1403
http://www.alcor-system.com
Pour reporter vos problème, la marche à suivre est ici
viewtopic.php?f=7&t=1403
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- Messages : 31
- Enregistré le : 09 août 2021, 10:03
Re: FWHM values for images
Sure, here is a link to a couple of fits files:
https://drive.google.com/drive/folders/ ... share_link
Thank you very much.
https://drive.google.com/drive/folders/ ... share_link
Thank you very much.
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- Messages : 1271
- Enregistré le : 20 juin 2009, 01:01
Re: FWHM values for images
No problem with yours images (Prism 32 bits version 11.2.3.21)
Centroid Settings:
![Image](https://i18.servimg.com/u/f18/14/65/52/82/centro10.png)
Analyze Settings:
![Image](https://i18.servimg.com/u/f18/14/65/52/82/settin10.png)
Results:
![Image](https://i18.servimg.com/u/f18/14/65/52/82/result10.png)
Marc
Centroid Settings:
![Image](https://i18.servimg.com/u/f18/14/65/52/82/centro10.png)
Analyze Settings:
![Image](https://i18.servimg.com/u/f18/14/65/52/82/settin10.png)
Results:
![Image](https://i18.servimg.com/u/f18/14/65/52/82/result10.png)
Marc
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- Messages : 31
- Enregistré le : 09 août 2021, 10:03
Re: FWHM values for images
Thank you I will try with those settings. My original settings was with "whole image". I will try 1/2 central zone
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- Messages : 31
- Enregistré le : 09 août 2021, 10:03
Re: FWHM values for images
I tried your settings Marc . In order to compute the FWHM, I have to check the option "Seeing computation area defined as above"("Caculs de seeing Sur zone define ci dessus").
With that option checked everything works.
Thank you.
With that option checked everything works.
Thank you.