how do I find ADU values?

[alacant]

I have a flat frame and want values in the corners and the centre.

I have GIMP, APT, DSS...

Cheers, clear skies and TIA

 

[andyboy1970]

I don't use GIMP but if it's like photoshop there is an info window you can open and it gives you the value of the pixels where your mouse pointer is.

[alacant]

35 minutes ago, andyboy1970 said:

an info window

Thanks. It doesn't show. Grrrr. Not under the pull-downs either.

[almcl]

There was a thread (which I now can't find a trace of) in which someone showed a screenshot of FITS Liberator giving values for pixels on the different RGB frames.  I couldn't get it to work with my setup for some reason (no input values displayed by FITS Lib) but as it's a free program might be worth a download?

[andyboy1970]

Sorry, thinking of Neb3

[alacant]

1 hour ago, almcl said:

There was a thread

Thanks. Yes. I think this one. However, the link to the screenshot is missing:(

Anyway, here's fits liberator. No sign of adu that I can find and no mention of it in the help. Anyone know where it's lurking?

Still hoping...

[Cozzy]

Hiya Alacant is this any good for you.

 

https://docs.gimp.org/2.2/en/gimp-view-info.html

 

Tim