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Question about filter type "TG" and AAVSO light curves
Hi,
I just had a quick quetions that I hope some one can answer about the light curve graphs that are generated on the AAVSO site.
Last night I submitted my first photometry measurement for Epsilon Aurigae. For the filter type, I selected 'TG' since this is from a DSLR where I used the Green channel with a Tranformation Coefficient. Is appears that when generating the graphs, data points that use the TG filter are not being plotted.
Am I correct that TG measurements are currently being ignored when generating light curve graph? If so, is that something that will be updated?
Thanks,
-Mike Durkin
Hi Mike! Congrats on your first photometry measurement of ε Aurigae! Ibelive you're right when you're suspecting that the Light Curve Generator is ignoring TG measurements, but the data base is not ignoring them. They are being gathered! We know we need to add other filters into the Light Curve Generator, including the Green filter, and that is now #3 on my list, so yes, this is something that will be updated rather soon. Now that I know folks like you are using such filters here, I'll make a note to tell folks here on CitizenSky about this change when it gets done. Thanks!! --- Doc Kinne, KQR AAVSOHQ
Iwas using the Vmagnitudes for the companion stars and Idid check off the "Transformed" checkbox when Isubmitted the data. Iwas originally going to select the filter as "Johnson V" since Idid calculate and apply a TC. After thinking about it for a couple of minutes, Ichanged my mind and selected Tricolor Green, since that is more accurate. If it is considered valid to mark a measurement made with a DSLR and the Transformation Coefficient as equivalent to "Johnson V", then I"ll go back and edit the filter on my submission. -Mike Durkin
Hmm....
I think if you are using V magitudes for the comparison star(s) and correct your measurements with a Transformation Coefficient, the better way to submit data would be to choose "Johnson V" as a filter (because the TC is calibrating the results to match V magnitudes) , but additionally tick the "Transfomed?" checkbox in the submission dialog to indicate that the measurement was taken thru a different filter.
Right? CS HB