From: Terrence Redding <tredding@mac.com>

Date: September 26, 2009 11:23:47 PM MDT

To: Astro_IIDC@yahoogroups.com

Cc: Richard Nugent <rnugent@wt.net>

Subject: Re: [Astro_IIDC] Version 2 of Eros Light Curve and movie

MIlton, very nice work.

I was telling Richard Nugent about Astro-IIDC earlier tonight.  He and I were discussing cameras to use for B&W imaging to support astrometry work.  He is primarily interested in improving the positional data of asteroids and has a 14" LX200 to work with, as do I.  He is interested in working with objects to 19th magnitude if possible.

What camera would you recommend for such an effort?  As you know I have the DMK21, but possibly a higher bit rate or larger chip?

As always your comments will be greatly appreciated.

Terry - W6LMJ - 14.287 

Terrence R. Redding, Ph.D. 

Redding Observatory South, West Palm Beach, Florida

http://olt.net/learningstyle/Site_2/Learning_Style_Research.html

How do amateur astronomers learn?

American Association of Variable Star

Observers (AAVSO): RTN http://www.aavso.org/

On Sep 27, 2009, at 12:48 AM, milton_aupperle wrote:

Hi folks;

The weather here sucks (smoke from forest fires, winds to 90 kmph and dust storms), so I decide to reprocess the Eros light curve data and generate a better version of the .mp4 movie.

The version 2 light curve :

http://groups.yahoo.com/group/Astro_IIDC/files/Other/Eros_V2_20090919_MJA.png

used five constant stars instead of one constant star. If you compare it to the original curve you can easily see how much the check star has been leveled out, with < +/- 0.04 magnitudes now. The curve for Eros has changed quite a bit.

I also updated the .mp4 movie :

http://groups.yahoo.com/group/Astro_IIDC/files/Other/Eros_20090919_MJA.mp4

by adding a UTC time numbers, labelled Eros and some reference stars.

TTYL..

Milton Aupperle