From: "milton_aupperle" <milton@outcastsoft.com>

Date: August 29, 2011 4:08:13 PM MDT

To: Astro_IIDC@yahoogroups.com

Subject: My First Exoplanet Transit.

Hi Folks;

I finally had good weather and super seeing conditions on likely one of the last times I will be able to try to capture the transit of Exoplanet Corot 2B for 2011.

Here is my result :

http://groups.yahoo.com/group/Astro_IIDC/files/Other/Corot2bTransit_20110828_MJA.png 

and you can clearly see a drop of 0.04 magnitudes occurring at mid point of the transit. Corot 2B : 

http://en.wikipedia.org/wiki/COROT-2b

http://var2.astro.cz/ETD/etd.php?STARNAME=CoRoT-2&PLANET=b

is a "hotty" (1500+° K) gas giant, approximately 1.4 times the diameter of Jupiter, completes an orbit every 1.7 days and is roughly 900 light years away. So this actually took place in AD 1111 or so.

Unfortunately the egress part was blocked because of a condo wall, so it's only a partial transit.

Astro IIDC worked flawlessly with the new guiding interface (Flea GPIO port to ST4) and my RMS was 0.6 to 0.4 arc seconds deviation for the 2 hours of tracking on a Mag 8.2 guide star. And doing the data reduction to extract the differential relative magnitudes took a few seconds to do via Astro IIDC before I was graphing the data up.

TTYL..

Milton Aupperle