Re: Da Plan

[alk@astro.caltech.edu]

Ah, ok. I was wondering how the TASS piece of parameter space compares
with other surveys. Judging by that plot, it looks like your current
observing strategy is pretty good since it covers approximately the same
magnitude range as the ASAS survey and some of the wide-field planet
transit searches. That'll allow for some interesting comparison of results
once transit surveys start releasing their variable star results. Their
observing strategies are very different (fast tempo, but not a very long
time baseline).

Adam Kraus

> Adam,
>
> There is a curve in S&T Note #10 on the web site.  This is for data from
> the last two years where the images were taken random in ra but at 4
> degree intervals in dec.  Data taken tracking Tiles shows a scatter with
> sigma of around 0.5 at mag 12.  Attached v_sigma.png shows the scatter for
> some test data.  This data taken with a 200 second exposure with
> successive images taken of the same tile over about a two hour tracking.
>
> Suggestions would be appreciated.
>
> Tom Droege
>
>
>> Hi. A question - have you tried to measure the uncertainties as a
> function
>> of magnitude yet? It would be interesting to see the maximum expected
> precision and the detection threshold since those are going to determine
> the most efficient exposure time, observing cadence, etc.
>>
>> Adam Kraus
>>
>>
>>
>
>
>