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BC UMa
- To: tkato
- Subject: BC UMa
- Cc: kunjaya
I observed BC UMa and DM Lyr on May 2, 1994.
The results of BC UMa was fairly good. Unfortunately DM Lyr data was
bad due to the following reasons :
1. The sky was hazy, bad transparency
2. The object rather close to the moon
3. It is faint object
The preliminary reduction results of BC UMa :
almost 5 hours monitoring,
a little bit more than three periods was obtained.
The amplitude of superhumps are between 0.2 and 0.3 mag
There are secondary superhumps during fading stages.
The light curve was analyzed manually. From the distance
between peaks, valleys and mid-point I got the periods
The average of the periods is 92.1 minutes with rms
error 0.6 minutes.
I compared the result with the graphs you gave.
The theta diagram gives 89.4 minutes period.
This result is not final. I'll analised the light curve
using PDM after the golden week holiday.
Kunjaya