Re: Negative values on the histogram - what do they mean?
Posted by magnusl on Jan 07, 2022; 4:47pm
URL: http://astroimagej.170.s1.nabble.com/Negative-values-on-the-histogram-what-do-they-mean-tp1713p1738.html
Hi!
Thanks. OK, so I understand the flat, that sounds OK. And you are correct (sorry for being unclear): I get - 7.738" meant this value as the lowest. But then why do I have a negative value as the lowest? Sometimes I even get a far lower value, a few thousands even, but the "black" value is still slightly above 0.
So: It seems my calibration is OK then, just not clear on how I can get a negative value at all there.
Magnus