[Aavso-photometry] New HMXB run

[Gordon E. Sarty]

Rick Huziak will be starting another 10 day observing run (Dec 3-13) on 
the 72-in telescope at DAO to measure HMXB radial velocities. Tim 
Crawford will be joining him on the weekend, and I'll be out after that. 
So, if you can, some HMXB photometry will be useful. V and I are the 
most important filters and time series as long as you can stand for as 
many nights as you can stand are needed. The rotation periods of Be 
stars seems to be in the range 3 to 10 hours, something that can only be 
picked up in long continuous light curves.

Here's a list of what we will be observing:

AAVSO Dsgn   Name       R.A.(2000)  Dec.(2000)  Mag
0140+60B V831Cas        01:47:00.1 +61:21:23.7 11.3
0434+41  RXJ0440.9+4431 04:40:59.3 +44:31:49.3 10.8
0515+37  V420Aur        05:22:35.2 +37:40:33.6  7.5
0549+28B 1H0556+286     05:55:55.1 +28:47:06.4  9.2
0630+05B SAXJ0635+0533  06:35:18.3 +05:33:06.3 12.8
1930+53  1H1936+541     19:32:52.3 +53:52:45.5  9.8
2027+47  RXJ2030.5+4751 20:30:30.9 +47:51:50.7  9.3
2157+49  V2175Cyg       22:01:38.2 +50:10:04.6  8.8
2204+52  4U2206+543     22:07:57.1 +54:31:05.8  9.9

Charts for these stars may be found at:

http://www.usask.ca/psychology/sarty/AAVSO_HMXB_Charts.html

Please submit all observations to the AAVSO database as usual.

Gord (SGE)