Been a long time since I've posted here for various reasons, but now trying to get back into the hobby and I wanted to try my luck at capturing the transit of a known exoplanet using my t3i and an old Nikkor 300mm /f4.5 lens.
I'm assuming that since I used a DSLR this is the proper forum, I've posted lots of images here in the past, but this time it is just graphs.
My target was HD189733b, which seems to be one of the easier transits to capture. It is also right next to M27, making it easy to find. I used the ETD (exoplanet transit database) site to determine transit times for my location. For my location, WV, there was a transit starting at 3:45am local time, ending at 5:35am local time on May 13th.
I used an unmodified Canon t3i and a Nikkor 300mm f/4.5 telephoto lens stepped with a 72-52 step down ring to about f/5.7. I took 15 second exposures every 30 seconds at iso200.
I then loaded 272 canon raw files into iris to register and align the images, and then used the automatic photometry tool in iris to generate the raw data. I used 4 reference stars on plus the HD189733 target star. I then ran 5 reference stars for a baseline. Here are the resulting light curve plots.
Target Star:

Reference Star:

Here is a link to a page with the plot data and more graphs.
DATA and PLOTS
This is my first time at detecting a known exoplanet, I hope the weather clears here so I can try some other targets.
Brent