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Re: Few results from disk sets 17 and 18
Tom and all
Tom Droege wrote:
> Thanks very much for the nice data. I would be interested in a plot of
> mean sigma vs magnitude. It is hard to estimate this from the log scatter
This and some other additions are in the revised page.
>I printed out a few stars. There are three extra columns that are
> not in your list. An eight digit number followed by numbers similar to the
> magnitude and the sigma. What are these?
They are: index to the master file, followed by the magnitude and sigma of
measurements excluding the largest and smallest value (to eliminate outliers).
> I notice that we have 40 -50 measurements for most stars.
> You go to nearly mag 15 on the plot, this seems to be well down into the
> noise for this data??
Most of the mag 14 and above stars have only one measurement or few at most.
This data is useless from the photometric point of view.
A summary of changes on http://node.239-0.ty.link.si/~jure/tassdisk1718.html:
new graphs, also excluding data from the disk 18f.
Calibration data at http://node.239-0.ty.link.si/~jure/calibrations.html
A hint to a method to recognize bad data at