Calculation of error ?

Posted by PieterVuylsteke on May 19, 2021; 4:34pm
URL: http://astroimagej.170.s1.nabble.com/Calculation-of-error-tp1561.html

Hi,

I am new to astrometry and trying to decipher your program.

I did get a run on an image sequence, and the magnitude curve of the variable star looks ok.
The sequence was made with a ZWO 2600mc color camera (CMOS sensor), calibrated, debayered and green channel extracted in PixInsight.

But, I would like to understand the numbers for the error estimates

These are some numbers for the first photo :
Source-Sky_T1     12.459513
N_Src_Pixels_T1      480.432414
Source_Error_T1      10.131787
Source_AMag_T1     9.374163
Source_AMag_Err_T1   0.737586

The magnitude is 9.374, and the error 0.737586.

May I ask in what units the error is ? Is that in the same as in magnitude ?

Is there a list with an exact significance (formula, units) of the values one can find in the measurements table ?
       
Kind Regards,
Pieter