[Aavso-photometry] First timer

[Richard Huziak]

Jim Roe wrote:

>After weeks of preparation, I think I am ready to submit my first V and 
>Ic photometry (of N VUL 07).  My results appear consistent with what 
>others are getting (I know that is NOT a criterion for submitting) but I 
>still have a question or two.  In particular,
>
>I'm using Maxim DL to reduce the data and the fainter companion star is 
>right smack in the middle of the background annulus.  I understand that 
>Maxim lops off the brightest 10% and faintest 10% of the pixels in the 
>annulus, so maybe it isn't a problem?
>
Sometimes there is nothing you can do in a crowded field so companions 
end up in the annulus. However, you could also place the companion in 
the 'gap' and expand your annulus past that.  Nothing is measured in the 
gap.

>
>I used the 88 star for reference and the 98 and 101 stars for checks. 
>The checks show a standard deviation of 0.02 mag in V and Ic.  Does that 
>seem reasonable?
>
Yep - that's pretty typical.

Sounds like you are fine to go!

rick

>
>Jim Roe
>Wentzville, Missouri
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>

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Richard Huziak
Manufacturing Engineering
SED Systems
Saskatoon, SK, Canada
tel. (306) 933-1676
<huziak at SEDSystems.ca>
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