Exoplanets TrES-2b in Draco and HD189733b in Vulpecula

Dear friends ... and that guy O'Connell,

I had the opportunity last week to pursue an additional two exoplanet transits. To be more specific, the first catch was TrES-2b in Draco whose orbit is almost certain to be decaying given the shortening of the transit duration from the initial 90 minutes at discovery to the current 76-80 minutes and which is quite visible in my light curve as well.

The second catch involves HD189733b in Vulpecula. This exoplanet is less than 0.30 degrees from the beautiful planetary nebula M27 and I recall reading a recent article surrounding the suggestion that water may be present on this exoplanet!

For further details, I kindly direct you to:

(1) www.perseus.gr/Astro-Photometry-TrES-2-20080626.htm
(2) www.perseus.gr/Astro-Photometry-HD189733-20080627.htm

July promises to be a very busy month and there will be lots of material becoming available to share with everyone.

The TrES-2b curve is very interesting... This is excellent work Anthony - even nicer that we got it before the AP folks got it...

Keep it up!

Dave