It's a NASA developed method of combining images (used with the Hubble Space Telescope). It uses multiple undersampled dithered images and can correct for geometric distortion. In other words, it allows you to take stacked or mosaic images while correcting for field rotation. The Meade software will track and stack using two stars - to handle field rotation (i.e. imaging using an alt-az mount). And it's a free update to the autostar suite software - which they now call 'AutoStar Envisage'. Here are a couple URLs: http://www.meade.com/autostar/update/index.html http://www.stsci.edu/ftp/science/hdf/combination/drizzle.html Clear skies, Dale.

-----Original Message----- From: utah-astronomy-bounces+dale.hooper=sdl.usu.edu@mailman.xmission.com [mailto:utah-astronomy- bounces+dale.hooper=sdl.usu.edu@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Tuesday, September 13, 2005 1:15 PM To: Utah Astronomy Subject: RE: Re: [Utah-astronomy] DSI with drizzle [was Generators]

I haven't heard of Drizzle, Dale -- what is it? Thanks, Joe

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