First DSLR photometry
After some attempts (5), it seems at last I succeeded in my first "bare-foot" DSLR
photometry. Sept 24,2012, starring: Alf Her, equipment: Canon EOS 1100D with 18-55 lens,
environment: light polluted but clean suburban sky, moon, 21°C, processing with IRIS 5.59
following the CitizenSky tutorial.
I said "it seems" because I actually don't master fully the math and physics besides
the "Reduction-Intermediate" spreadsheet, so I must trust what it produces.
Successful for me it means when I see numbers below 0.05 in "comparison stars fit error (max)"
and "check star mag error" cells, followed by "OK" in "Air mass plausibility check".
The values I got in these cells are 0.011 and 0.010 respectively.
I'd like to submit my data - I would like to upload a file in extended format - but I have some doubts about the
how to compile some fields:
-Mag Err: I would put the highest of the two error values I just said above.
-Filter : the tutorial says that the spreadsheet applies a correction to magnitude values
obtained from DSLR images (Green component) to match standard V filter values. So, what filter
should I select in this field? Johnson-V? or TG?
-Trans: I have no idea of what this means, so I would put "NO"
-Mtype: I would put "STD"
-CName, CMag: the spreadsheet requires some comparison stars, while here it seems I must select only
one of them. I would select the one with the smallest error.
thanks for any suggestion