Dawes limit for HST?

On Tue, 10 Aug 2004 07:42:29 GMT, "MikeThomas" wrote:

What is PSF?

That's the point spread function. It is essentially the profile you see at the
image plane of a point source. For a telescope on ground, its size is usually
determined by the seeing conditions. In space, it should be determined by the
optics alone. In the case of the WFPC2 instrument, the pixels are larger than
the spot size the telescope is capable of producing. That is called
undersampling, and it means that the resolution of the images are limited by the
camera, not the optics.


Here is a link that may help.

http://hubblesite.org/newscenter/new...eases/2004/25/

They don't really detail the processing. If they didn't use the drizzle
technique, than what we are seeing is less resolution than the telescope is
actually capable of.

_________________________________________________

Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com