Specifications

AUTOSTAR CCD PHOTOMETRY 63
Table D-3. Calculated Instrumental Magnitudes.
I Filter R Filter
UT X i UT X r
04:55:15 1.0768 –10.2216 04:50:57 1.0775 –11.4109
04:58:36 1.1055 –10.1829 05:11:16 1.0771 –11.4074
06:15:33 1.1266 –10.1509 06:10:23 1.1195 –11.4010
07:21:39 1.2781 –9.9945 07:16:35 1.2617 –11.3809
08:15:45 1.5278 –9.6948 08:10:40 1.4971 –11.3563
V Filter B Filter
UT X v UT X B
04:46:24 1.0786 –11.6284 04:40:02 1.0809 –11.1894
05:29:26 1.0830 –11.6218 05:33:32 1.0852 –11.1842
06:06:26 1.1145 –11.5267 05:36:29 1.0869 –11.1830
07:12:15 1.2484 –11.4157 07:02:17 1.2203 –11.1190
08:05:45 1.4691 –11.0994 07:59:43 1.4369 –11.0244
i
o ,
r
o ,
v
o,
and b
o
are magnitudes corrected for extinction, or the
magnitudes as they would be without extinction (i.e., measured
outside the Earth's atmosphere).
i
o
= i – k'
i
* X b
o
= b – k'
b
* X
r
o
= r – k'
r
* X v
o
= v – k'
v
* X
Or to put the equations in the form of Y = MX +B:
i = k'
i
* X + i
o
b = k'
b
* X + b
o
r
= k'
r
* X + r
o
v = k'
v
* X + v
o
The data are then plotted for each filter versus the air mass, X, as
shown in Figures D-1 through D-4.