From: Milton Aupperle <milton@outcastsoft.com>

Date: September 21, 2009 9:46:33 AM MDT

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] Eros Light Curve Data Captured

Hi Jim;

On 21-Sep-09, at 7:27 AM, Jim Chung wrote:

Milton,

I really enjoyed your Eros light curve presentation, astronomy is one  

of those rare areas where amateurs can still contribute meaningful  

scientific information.

You sure can. I was reading last night about the long list of asteroids (in the 14 to 16 magnitude range) that have sketchy or no light curves. Lots rotate in less than 8 hours and have fairly big 0.1 to 0.5 magnitude changes, which are pretty easy to detect.

My son is hoping to do a science fair project where we use AstroIIDC  

to record the reappearance of Io from behind Jupiter and by using  

really precise time recording track (I believe now available on  

AstroIIDC) determine the delay between the expected time and  

observation time to determine an estimate for the speed of light.

On the Astro IIDC timing side of things, all you  need to do is use "Show Movie TC Track…" (see page 30 of the Astro IIDC manual) and it can display the time code for each frame as it's played.

For an explanation of what the TimeCode is displaying, please read the section on page 78 (near middle of page)  that starts with:

"Every movie is recorded with a Time Code Track embedded in it, ..."

HTH..

Milton Aupperle