Re: How is this done?

From: Chris L Peterson (clp_at_alumni.caltech.edu)
Date: 06/18/04 

Date: Fri, 18 Jun 2004 04:00:20 GMT

On Fri, 18 Jun 2004 03:51:44 GMT, "UncoBiwie" <mh@yahoo.com> wrote:

>So the camera has to be exactly still and fire off multiple images?

It doesn't have to be perfectly still because the images can be aligned before
stacking. This is built from a series of individual exposures, however. I don't
know the details, but I'm pretty sure it was made with some type of video
camera, probably a webcam. What you get initially is a movie, and afterwards you
pull individual frames to combine. An ISS transit across the Sun is very brief,
and requires capturing several frames per second at least.

_________________________________________________

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