Page 4 ( Last level. )

Main Astronomical Index ( bottom ).


Some older ST-4 tests on variable stars. Compairing with AAVSO mags.
CCD sensitivity wave length: 4000Å - 9000Å.
Peak sensitivity at 6750Å and half sensitivity at 4500Å and 7500Å.



0004+51 SS Cassiopeiae mag 9.27 ( 9.3 visual ).

Field = 9' x 9' of arc.
Universal Time : 18.53
15.December 1998
Telescope : 0.15m Maksutow f/6
( Mounted with the 0.61m )
Integration time : 30 seconds


Visual comparison stars : 93, 103

Measurements: AAVSO Map - ST-4 Software
103 - 10.25
123 - 12.04
128 - 12.17


0008+62 UX Cassiopeiae mag 8.43 ( 10.3 visual ).

Field = 9' x 9' of arc.
Universal Time : 19.16
15.December 1998
Telescope : 0.15m Maksutow f/6
Integration time : 5 seconds


Visual comparison stars : 103

Measurements: AAVSO Map - ST-4 Software
102 - 10.33


0058+40 RX Andromedae mag 11.98.

Field = 9' x 9' of arc.
Universal Time : 19.46
6.December 1998
Telescope : 0.15m Maksutow f/6
Integration time : 250 seconds


Measurements: AAVSO Map - ST-4 Software
118 - 11.81
131 - 13.36
145 - 14.65
146 - 14.77
150 - 14.86


0103+59 HT Cassiopeiae mag 16.80.

Field = 9' x 9' of arc.
Universal Time : 20.35
6.December 1998
Telescope : 0.15m Maksutow f/6
Integration time : 240 seconds


Measurements: AAVSO Map - ST-4 Software
136 - 13.79
147 - 15.35
156 - 15.49
166 - 16.60


0236+59 PU Persei ( Not visible ).

Field = 9' x 9' of arc.
Universal Time : 20:32
6.December 1998
Telescope : 0.15m Maksutow f/6
Integration time : 240 seconds


Measurements: AAVSO Map - ST-4 Software
134 - 13.77
139 - 14.04
141 - 14.38
141 - 14.11
149 - 15.02


GK Persei mag 13.23.

Field = 9' x 9' of arc.
Universal Time : 01.52
13.December 1998
Telescope : 0.15m Maksutow f/6
Integration time : 45 seconds


Measurements: AAVSO Map - ST-4 Software
132 - 13.24
136 - 13.91
139 - 14.04


0324+58 AF Camelopardalis 16.09.

Field = 9' x 9' of arc.
Universal Time 22:33:
8.December 1998
Telescope : 0.15m Maksutow f/6
Integration time : 540 seconds


Measurements: AAVSO Map - ST-4 Software
137 - 13.52
140 - 13.99
155 - 15.41 ( Close to AF )
155 - 16.03


0829+53 SW Ursae Majoris mag 16.68.

Field = 9' x 9' of arc.
Universal Time : 04.16
7.December 1998
Telescope : 0.15m Maksutow f/6
Integration time : 300 seconds


Measurements: AAVSO Map - ST-4 Software
135 - 13.14
156 - 15.64
v564 Cygni mag 10.69 ( 13.0 visual ) Bright top left.

Field = 9' x 9' of arc.
Universal Time : 16.51
13.December 1998
Telescope : 0.15m Maksutow f/6
Integration time : 240 seconds


Visual comparison stars : 114, 124 ( From Hyper Sky. )

Measurements: Hyper Sky values - ST-4 Software
103 - 10.33 ( Bright star to the right of center.)
114 - 11.39 ( Bright star at 2 o'clock relative to previous
( Not the cluster. )
128 - 12.77 ( Star at 10 o'clock relative to previous. )
133 - 13.40 ( Star at 8 o'clock relative to previous. )

v564 Cyg ( 15.0 - <17.5 p ) - 10.69



2029+54 ST Cygni 7.60 ( 9.4 visual ).

Field = 9' x 9' of arc.
Universal Time : 17.38
13.December 1998
Telescope : 0.15m Maksutow f/6
Integration time : 7 seconds


Visual comparison stars : 70, 99

Measurements: AAVSO Map - ST-4 Software
70 - 7.00