ER UMa - 13/14 & 14/15 Apr

[coatesg]

ER UMa is currently in superoutburst (it's fading from the max at about 12.5V and is currently about 13.4V). This is a peculiar sub-class of SU UMa type dwarf nova that has very frequent outbursts - somewhere around 43d between superoutbursts (see discovery paper: http://adsabs.harvard.edu/full/1995PASJ...47..163K). Last 2 nights I have managed to do some time resolved runs to try to record superhumps in the light curve. First evening wasn't great, and was affected by thin/passing cloud a bit. Last night was much better and allowed a much longer uninterrupted run

I omitted the error bars from the ER UMa points to try and more clearly show the shape of the curve.

13-14/04:

14-15/04:

 

Edited April 15, 2020 by coatesg