[Aavso-photometry] Aavso-photometry Digest, Vol 49, Issue 4 (HMXBs)

Gordon E. Sarty gordon.sarty at usask.ca
Tue Dec 4 22:00:14 EST 2007


>>>> 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
>>>>
>>>>       
>>> Checking the recent observations and LCG, there appear to be no data for 
>>> 0434+41, 0515+37, 0549+28B and 0630+05B.  Could this be right?
>>>

There are no data for 0434+41, 0515+37, 0549+28B and 0630+05B yet so 
these stars are the priority. I suggest long time series in V, one star 
per night (or block of time if you don't want to do all night). Then 
cycle through the stars (all of them if you can). If the V light curve 
looks boring switch to I. If you can script alternating V and I 
exposures, even better; that would allow us to follow color changes.

>>   
>>> It looks like I might have a decent night coming and I'm getting ready 
>>> to try out my scripting ability to jump around among a few of these.
>>>
>>> What kind of sampling rate would you want in V and I?  Can you 
>>> prioritize these targets if I can only get a few (don't know about the 
>>> rest of the week yet) and/or my scripting doesn't work the first time?
>>>

Image as frequently as you can in your time series.

As Rick says, he'll be on the AAVSO chat line if you want more info. I 
only get this list digest once a day. No observing tonite - the 72 inch 
mirror is soaking wet and the wind is too strong to open the dome.



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