[Aavso-photometry] New HMXB run

[Richard Huziak]

Jim et al,

I arrived at the DAO (Victoria, BC) today to begin work on this 
program.  However - coastal weather = rain tonite and likely tomorrow, 
though I may get a few hours in tomorrow.

http://www.cleardarksky.com/c/DomObBCkey.html?1

Our plan is to cycle through as many of the objects on the list as I can 
- likely I'll be taking 10-min to 20-min exposure spectra of these 
objects in RA order (beginning with 1930+53) and repeating this as many 
times as I can.  (I'm here from Dec 3 - 12).  As for what we'd like the 
photometrists to cover, we need time-series of all these stars as dense 
as we can get, as long as you are willing to go, and for the whole time 
period whether I am running or not.  Some stars show sort-term nightly 
pulsations, some tend to show longer periods.  A few words of advise:  
the visual amplitudes are often very small - a few hundredths, so it is 
vitally important that you have good flats and decent exposure times.  
We also prefer at least 3 to 5 exposures per 'spot hit' for those who 
can't do time-series, so that we can be sure the data is not corrupted 
by hot pixels or cosmic rays, etc.  We cannot use singleton exposures 
because we cannot assure they are accurate.  Please use Gordon's charts 
from his website.

During my stay here, I hope to be on the AAVSO chat-line as much as I 
can, and will certainly be during imaging hours.  There I will announce 
my targets and will hopefully be able to direct those who are imaging 
concurrently so that we can get simultaneous spectral and photometric data.

http://www.aavso.org/aavso/chat.shtml


rick HUZ


arne wrote:
> Jim Roe wrote:
>   
>> Gordon E. Sarty wrote:
>>
>>     
>>> 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?
>>
>>     
> Thanks for mentioning this, Jim.  I think it is partly because VSP
> doesn't recognize these fields, and the calibration photometry does
> not appear in the compstar database right now.  We have some reloading
> of new fields into the database that needs to occur, and we need to
> check our records to ensure that nothing gets overlooked.  It may be
> January before that can happen, so in the meantime, just use Gord's
> finding charts and the compstars he has listed there.
>
>   
>> 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?
>>
>>     
> Sampling rate was discussed in the Alert Notices 354 and 348.  Gord
> will have to tell you priority!
> Arne
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