[Aavso-photometry] GJ436 transit (maybe)

[Shawn Dvorak]

It's not pretty, but if you squint and look at just the right angle you 
might convince yourself that last night's exoplanet transit is visible 
in my data.  According to Alert Notice 370 the transit was predicted to 
occur between JD 54510.78 and 54510.82.  The 0.006 mag dip in the 
30-point moving average is actually fairly pronounced.  The 0.005 mag 
rise at 54510.83 is a bit troubling, though.  The data represents ~5 
hours of 30s exposures through a V filter with an ST-9 on my LX200 0.25m 
scope.  An ensemble of the 10.6, 10.7, 11.4, and 11.6 mag comparison 
stars was used.

This data is probably about as good as I can get from my site.  Last 
night was quite clear and cool after a cold front passed through - about 
as close to photometric conditions as we get here at an elevation of 75 
meters.

Shawn Dvorak (DKS)
Clermont, FL