Exoplanet HAT-P-22b in UMa

Dear group,

Finally an opportunity this past Monday for some work following a three-month hiatus due to bad weather. I used the opportunity to pursue the exoplanet transit for HAT-P-22b in UMa. This discovery was announced about 18 months ago and involves a somewhat massive hot Jupiter.

Humidity was significant and especially during the latter portion of the session where it became grotesque (my AP RHA was soaked). For the result from the 4.6-hr session, please see http://www.perseus.gr/Astro-Photomet...2-20130304.htm .

Also in the same field of view is the pulsating variable CzeV218 and which I had originally failed to identify in various databases (including AAVSO), thus leading me to think that I may have accidently stumbled upon a new discovery. However, once the radius was (properly) expanded for possible variables around HAT-P-22, this delta Scuti was picked up in the AAVSO database.. It seems to have been discovered just after the announcement for HAT-P-22 eighteen months ago and probably represents an accidental find during photometry analysis of HAT-P-22 (similar to my case on Monday). For a result based on 5.2 hrs of data for this pulsating variable whose magnitude changes by 0.04 mag over 119.52 minutes, please see http://www.perseus.gr/Astro-Photomet...6-20130304.htm .

Anthony.