[Aavso-photometry] BZ UMa: BDG and MXL data agree closely !

[Aaron Price]

 Hey, all. All AAVSO software *does* support magnitudes to 3 decimal
places. This was a change made last fall.  The light curve generator
does not yet plot the new CV or CR codes as separate symbols because,
frankly, I've run out of symbols and need to find a creative solution.
Until then we plot CV with visual because that is the closest class of
observation CV obs usually fall under. However, being unfiltered, this
changes according to the observer of course. Also, remember we are
requesting observations in V for this campaign. The object is bright
enough that SNR shouldn't be a problem for most.

Aaron


On Mon, 17 Jan 2005 13:23:43 -0000, Richard Miles
<rmiles.btee at btinternet.com> wrote:
> I've uploaded my first (unfiltered) results set.
> 
> For some reason the software saw my data as being 'Visual' even though I put
> the correct name (CV) in the text file.  I think the reason for this is that
> I have submitted to 3 d.p.'s and the software can only see up to 2 d.p.'s
> and therefore misses recognising the detector type correctly
> 
> In lightcurve generator it is therefore necessary to tick Visual as well as
> the CCD boxes.  Highlighting MXL observations and you'll see the degree of
> agreement with BDG is at better than the 0.01 mag level during the first
> part of my run which covers 3387.364-.447.  It confirms the fine structure
> seen in BDG's data is largely real.  Later on we were both affected somewhat
> by cloud.
> 
> N.B. I have used my unfiltered calibration from last year to adjust for the
> fact the observations were unfiltered so as to put them on the Johnson V mag
> scale - good to about +/-0.01 mag.
> 
> Next will work on my filtered data, which were taken with only 60mm aperture
> so will be relatively noisy, I imagine.  At least an accurate measure of V-I
> could be the really useful finding here.
> 
> Richard Miles (MXL)
> 
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-- 
Aaron
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