[Aavso-photometry] ASAS182612

[arne]

Greg Crawford wrote:
> [Apologies for the previous sending of this message under the wrong subject
> heading. When initially posted it was rejected because I was subscribed under
> the wrong e-mail address. In my haste to reply, I picked the wrong message from
> Jim to use as the foundation for the reply. :-(]
> 
> I've been getting some data on ASAS182612 from my location at longitude 152 06
> 28 East (eastern Australia). However, I can't see any value in my data unless it
> is transformed to the standard system. (How else could it be matched to the
> overall light curve?) I seem to have worked out how to do that, but I am waiting
> for the new observational format for AAVSO submissions. The software I am using
> was keyed up, in beta format, to do that; but it seems that the "final" form of
> the format has now been ditched and a new one is in the pipeline. Since the
> software moves from measurement, to standardization, to format of report, in one
> continuous stream of processing, I don't want to take the risk of trying to
> extract data from the middle of the process.
> 
> The plotting of the curve based on my observations alone doesn't show much, but
> then it is a fairly long period after all. I am hoping that, when combined with
> data from other longitudes, it will contribute to the overall curve.
> 
I wouldn't say that the AAVSO has "ditched" its new formats - we've
tweaked them slightly as we implement them here.  After announcement
and after we've gotten submissions, I'm sure one more round of tweaking
will be necessary to handle the cases we haven't thought of.

Transformation is nice, but we have comparison stars that are pretty
close in color to the variable, so that V-band transformation on average will
only move datasets a couple of hundredths of a magnitude.  That is
of course useful, but not necessary, when combining datasets of this
much higher amplitude star.  I encourage transformation if you can
do so, but don't hesitate in submitting filtered, but untransformed, data.
Arne