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[rdryfoos]

When I compare a drizzle integrated stack and a non drizzle integrated stack in SFS, the drizzle integrated stack has a FWHM way higher for the same data.  In order to to really compare FWHM, Eccentricity, noise and SNR between a drizzled and non drizzled image--should the pixel scale be changed (in system parameters) for the drizzled image? 

Thanks,

Rodd

[mschuster]

When upsampling I think you can scale the FWHM measured in pixels by the upsampling factor for comparison purposes.

Eccentricity probably should be compared directly, ie no scaling.

SNR's are very much not comparable, due to the pixel correlation and pixel coverage image scaling.

Thanks,
Mike