RE: [ccd-newastro] astrometry and photometry
>What is the best software for Astrometry and photometry?For photometry, there appears to be one application that has the edge on all the
others - MPO Canopus. The reason for this is that it has the ability to
internally calculate transformation coefficients, extinction coefficients and
zero points, and to reduce instrumental measures of magnitude to measures on the
standard system. So, if you are observing in B,V,R or I, you can use two
filters, a few observations of some standard fields, and single filter
observations of the target throughout the night, to generate measures that can
be placed on the standard photometric system, and thus easily combined with
those of other observers doing the same. There is no need to set up your own
spreadsheet for this purpose, and to have the risk that errors will occur as
numbers are moved from one application to the next.
In addition, the application has a light curve plotter that can combine
observations from different nights, and even different observers, to produce a
light curve using a Fourier Analysis.
If you happen to be doing photometry of asteroids, it also has sophisticated
tools to take account of various aspects like phase.
If you are observing binaries, it will also generate a file for compatibility
with Binary Maker 2 and 3.
This sounds like an advertisement. It's not and I don't have any commercial
interest in the product. I just found that when I was trying to begin in
photometry, this application had all the tools to get me there.
See here: http://www.minorplanetobserver.com/htms/mpocanopus.htm
This application also does astrometry, but I have not used it for that.