Re: Comet like Ring nebula, or a planet

On Mon, 29 Oct 2007 16:01:05 -0700, Rich <rander3127@xxxxxxxxx> wrote:

But the centre of the thing burns out with just a few seconds
exposure. They'll have to do some kind of combination of short and
longer exposures to show it well, much like shooting the Orion Nebula
to show both the Trapezium and the outer filaments.

A few seconds is a long time. Planets and lunar images saturate most
sensors in a fraction of a second. And that's what you need to take
advantage of the "lucky imaging" provided by video cameras. This comet
simply provides inadequate signal for imaging at 10-30 frames per
second, unless you have a huge aperture scope.

_________________________________________________

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