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How to find FWHM? 
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#1
Jan3111, 10:21 AM

P: 2

Hi,
I've been searching on google for minutes but couldn't find out a consistent way so far. I mean, it seems everybody has something to say about it :) My data consists of pixel values (ADU's). I am writing a script to obtain fwhm of seeing disk. By definition of the gaussian curve, i should only calculate the standart deviation of these values theni get fwhm=stdev*2.355 . Am I correct? Or should i obtain a gaussian fit then i calculate fwhm as its name suggests? Thanks in advance, bugra 


#2
Feb111, 08:53 PM

Sci Advisor
HW Helper
P: 2,482

If you do it both ways, and the answers are different, what does that tell you about the fitting algorithm that you used?



#3
Feb911, 07:03 AM

P: 2

for multiple sources on the same frame, should fwhm be same?



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