Quote:
Originally Posted by rogerg
Here is my attempt at graphing my observations to date.
Open to comments/criticisms.
I used CCDSoft's "Generate Light Curves" functionality for "Stationary (variable star)". The magnitudes I specified for the two reference stars used were obtained from Astrometrica's values for the reference stars it identified in the image (I couldn't seem to find/click on the stars in TheSky to obtain magnitude that way).
The refernece stars are shown in the attached screen shot from CCDSoft.
Roger.
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Excellent Roger
It is worth looking for reference star mags from
VSP on the AAVSO website. These will almost always be more accurate than TSXP or astrometrica.
The AAVSO has magnitudes for the star to the left on your image these are
B = 15.052
R = 14.295
I = 14.025
These mags have been taken from APASS data that is accurate to about 0.05 mag for mag 14 stars.
I have used the photometry tool with CCDSoft but only for a quick estimate. You don't seem to be able to vary the parameters. There are other aperture photometry programs available that are better. AIP4WIN is a very popular one and reasomably cheap.
Cheers
Terry