[Aavso-photometry] GJ436

[Jim Roe]

I *think* I might have captured the exo-planet transit across GJ436 last 
night (hoping for corroboration!).  I forgot to set my filter for V and 
took data in I instead, but I got 300 measurements over a 2 hour period 
with a standard deviation of 0.006 over the 4 reference stars.  My VERY 
rough analysis makes me think the transit started about 3:30 UT (almost 
30 minutes later than predicted) and lasted about 52 minutes.  During 
the 45 minutes or so before the transit, my measurements of the target 
star indicated an average brightness of 8.230 (I) with a stdev of 0.009. 
  During the suspected transit, the average was 8.239 with a stdev of 0.010.

My data are not transformed, nor do they take into account the change in 
air mass.  I know the air mass, but haven't figured out how to report it 
without entering it manually for each and every data point (I use 
MaximDL and upload a single table of mags and JD).

You can see the data  with the LCG.  Put in from 2454526.613258 to 
2454526.686939 to see the full range.  Don't forget it is in I.

Jim Roe [ROE]
Wentzville, Missouri