Specifications

62 AUTOSTAR CCD PHOTOMETRY
One of the suggested stars is labeled M67-081. Tables D-1 and
D-2 list the observed counts for M67-081. Note: The following
data is used as an example and is not necessarily “real” data.
Table D-1. Example I and R Observational Data
for Star M67-081.
I Filter R Filter
UT X i Counts UT X r Counts
04:55:15 1.0768 183962 04:50:57 1.0775 550120
04:58:36 1.1055 177526 05:11:16 1.0771 548349
06:15:33 1.1266 172358 06:10:23 1.1195 545120
07:21:39 1.2781 149238 07:16:35 1.2617 535115
08:15:45 1.5278 113238 08:10:40 1.4971 523145
Table D-2. Example V and B Observational Data
for Star M67-081.
V Filter B Filter
UT X v Counts UT X b Counts
04:46:24 1.0786 672152 04:40:02 1.0809 448582
05:29:26 1.0830 668065 05:33:32 1.0852 446448
06:06:26 1.1145 612053 05:36:29 1.0869 445945
07:12:15 1.2484 552542 07:02:17 1.2203 420435
08:05:45 1.4691 412892 07:59:43 1.4369 385359
Determination of Instrumental Magnitudes
The following equations are for determining the Instrumental
Magnitudes. Table D-3 lists the calculated values.
i = –2.5 * log
10
(i Star Counts)
v = –2.5 * log
10
(v Star Counts)
r = –2.5 * log
10
(r Star Counts)
b = –2.5 * log
10
(b Star Counts)