Specifications

68 AUTOSTAR CCD PHOTOMETRY
Terms and Definitions
Note: (V – I) is used in the following equations, but is actually
not necessary, as final values for (V – I) can be determined from
the (V – R) and (R – I) values.
Observational Data
I Star Counts = i counts
R Star Counts = r counts
V Star Counts = v counts
B Star Counts = b counts
Calculated Data
(Corrected for 1.0-second integration time)
I Star Count Corrected = i counts
R Star Count Corrected = r counts
V Star Count Corrected = v counts
B Star Count Corrected = b counts
Observational Data
The following data has been modified slightly, but is based on
actual data taken at the Hopkins Phoenix Observatory (HPO) with
a modified DSI Pro CCD camera, imaging the M67 star cluster (an
object with well-determined comparison values). Star counts have
been normalized for a 1-second integration time. X is the Air Mass
for the observation. Table E-1 lists the raw count data.
Table E-1. Observational Star Counts.
Star ID X i counts r counts v counts b counts
M67-081 1.0678 183962.9 550120.0 672151.8 418581.7
M67-108 1.0678 839716.2 1321557.5 816575.1 162246.7
M67-117 1.0678 33397.6 66663.2 52113.7 16926.3
M67-124 1.0678 35806.7 83593.1 80115.8 32157.9
M67-127 1.0678 22592.5 50523.8 43625.1 7160.0
M67-130 1.0678 18563.3 44009.5 42037.1 16492.3
M67-134 1.0678 39921.9 84096.3 73617.1 27774.8
M67-135 1.0678 117236.9 212966.4 154767.1 38165.5