Quote:
Originally Posted by Shiraz
As Lee says, at 3.5 arcsec, you are heavily undersampled, so FWHM is probably not a very useful measure, because the star FWHMs will be similar to or smaller than the pixel size and what is reported will depend on where the stars fall on the pixel boundaries.
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In that case, am I to assume that reported values for my wide field system are inaccurate too? It might be prudent to obtain
one of these. Just don't fall off the chair when you see the price.