[Aavso-photometry] Comps for LPH040

[Gordon Sarty]

To follow up on Tim's message, Rick Huziak recommends adding star n to 
the comp ensemble list. So I've done that. Please see revised chart on

http://homepage.usask.ca/~ges125/AAVSO_HMXB_Charts.html

My DAO run is over but please stay on LPH040 for a while if you can. We 
are looking for another "eclipse". This happened to me with LPH100 (LS 
5039) in 2005. And I've yet to find a convincing second eclipse. But the 
aggravation of that search lead to my MOST space telescope time this 
summer - so good luck/ bad luck. LPH040 may taunt us the same way, so 
please keep looking if you can.

Gord Sarty (SGE)


> Message: 1
> Date: Tue, 20 Jan 2009 23:58:24 -0800 (PST)
> From: Tim Crawford <tcarchcape at yahoo.com>
> Subject: [Aavso-photometry] Comp Star Options for the HMXB V420 Aur
> 	aka	LPH040
> To: aavso-photometry at mira.aavso.org
> Message-ID: <249461.11838.qm at web34408.mail.mud.yahoo.com>
> Content-Type: text/plain; charset=us-ascii
> 
> We have confirmed that the "k" star on this chart is a variable (tentatively an EB) and that the "b" star is a variable suspect.
> 
> Dr. Gordon Sarty has requested that the following stars be used, at this point:  f,h,j,m & o. 
> 
> It would also be preferable if you could use the h star as the check star, at this point (although this suggestion is not on the chart) and not included within the ensemble.
> 
> FYI, to get a 3 star ensemble in my fov I have no choice but to use the f,j & g stars keeping the h star as a check and out of he sequence.  While the "g" star is a bit redder than Dr. Sarty would like to be safe, so far we have not detected any problems with this star.
> 
> Dr. Sarty tells me that he has now made some new notes on the chart (LPH040)
> 
> http://homepage.usask.ca/~ges125/AAVSO_HMXB_Charts.html
> 
> I apologize to all for any misunderstandings and confusion... it simply happens that sometimes we discover comps are variable, regardless of the high quality of the original sequence.
> 
> Per Ardua ad Astra
> 
> Tim Crawford CTX
> Arch Cape Observatory
>