This method is in regular use for planetary and deep space imaging Allen , and has been for some time. There are various bits of software that will do the task of picking out the best frames , which can then be stacked to form the final image. Its no problem with a target that just sits there and doesnt move.......but if you can come up with a tracking programme that will give me a zillion frames of a fast moving satellite....the aspect of which is changing constantly , not to mention the shadow effect from its solar panels.................and I'll buy it ! Phil and Mike ( list members) have perfected their own software that will track birds accurately , but even that will only give them a max of about 20-30 frames which can be stacked ... ie frames that show the satellite in exactly the same attitude/shadow effect........sadly , not a zillion frames :O) When tracking say ISS by hand...I usually get about 100 useable frames over a two minute period from 2-3000 frames , of which I dump about half , then single out the final few to make up an animation. As you can see from the strip http://mysite.wanadoo-members.co.uk/satcom_transits/stationstrip.jpg the view of the station is constantly changing. throughout the pass. We are drifting a bit OT here , but in closing , I would suggest the best way to appreciate the problems relating to satellite imaging is to give it a go ! Wasn't it Mr Chien who labelled it an "Extreme Sport " ? :O) John ----- Original Message ----- From: "Allen Thomson" <thomsona@flash.net> To: <SeeSat-L@satobs.org> Sent: Thursday, May 03, 2007 10:03 PM Subject: Re: Orbital surveillance satellites now exceed 1 inch resolution? > > --- John Locker <john@satcom.freeserve.co.uk> wrote: > >>> If only it was that simple !!!! :O) > > I take it you've tried looking at a zillion frames and encountered > problems with getting good ones and combining them into a better image. > What goes wrong? > > ------------------------------------------------------------------------- > Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: > http://www.satobs.org/seesat/seesatindex.html > > > ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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