short term variability

Home Forums General Discussion Whatever happened to Megrez? short term variability

#582167
Robin Leadbeater
Participant

B,V Ic correspond to the band in which the brightness was measured. (The survey instrument uses a CCD camera and wide field lens).  V corresponds roughly to what the eye sees Ic is the near infrared. There are small long term average trends from season to season but the  variation from day to day/week to week of up to 0.5 magnitudes seen in the V data would be  obvious by eye if real. The very tight error bars on the points would suggest they are real but I am somewhat sceptical.