Michael-

Very classy of you not to pass on your "gift!"  Hope you get well soon.

I was going to say to you about the dim asteroid problem that 2 things might be at work: first, you may not have a good flat that you're subtracting - this messes up photometry of faint objects more since the zero point of your intensity scale is wrong; second, remember that the statistics of faint objects are really poor - one needs at least a 10:1 signal:noise ratio in order to get .1 mag accuracy, and you won't get that with faint stars.

- Jerry
//


michael.kran wrote:

Hello Rob et al,
I came down with what I hoped was a small cold Thursday. It have
turned into a chest cough. I don't want to do the uncivilized thing
and make a present of the virus that is taking up residence!!
Therefore, I know I'm not going to be better later today. I will, with apologizes, miss today's meeting. My biggest regret will
be to miss Allen's talk. It's times like this, and all the other time
we have unique and information talks, that I regret we don't make
video movies for the web. Just think how it might enhance the reach
of this small club. Heck, we might even get some EAS folks to start chipping into the MDAS
coffers just for the privilege of attending!!
Michael
P.S. - I can't think of a theme or cause that does not use web video
to make itself hear. Whether it is a presidential candidate, or my
Charles Schwab broker, everyone seems to be assuming I can no longer
read. ;-)
--- In mdasimaging@yahoogroups.com, "Michael Kran" <michael.kran@...>
wrote:

Hello Rob,
Yes. And it will be short, and to the point.
I'll just re-enact the few minute process of discovering it.
Then answer questions. We're after variety here. I want to leave plenty of time for Allen

Rush.

 I have some issues with information loss from quantized values for

very dim

asteroids.
Adding files help, but averaging does not. So, I will be an

especially keen

listener of Allen's talk.
Michael
_____ From: mdasimaging@yahoogroups.com

[mailto:mdasimaging@yahoogroups.com] On

Behalf Of Rob Haitsma
Sent: Sunday, November 09, 2008 10:52 AM
To: mdasimaging@yahoogroups.com
Subject: [mdasimaging] Great idea Jim
I agree with Jim.
Michael, would you be able to give a presentation on Asteroid 2008 SK9D?
That would be a very interesting talk. Alan, you had mentioned possibly
doing a talk on several different topics... how about dealing with image
noise?Rob
This will be a very good meeting... as always.