CCD Observing Log of Ritter Observatory
Page  1 of  1

Echelle settings UT Date: 2007-01-03
Observer: SJR LDS Settings
X-Disp Tilt: 235.0 λc: Hα Exposure: 20070103.0*
Temp. (°C): 14 RH (%): 75
Grating: 6 λc: Hα Tilt: 4o
Echelle Tilt: 21.95 Slit: 275 Sky Conditions: partly cloudy
Slit: 255 Temp.: -93.5oC Focus: 5.81


Exp #
Start Time
(UT)
Dur
(s)
HA
Start
E/L
Object
Sp. Type
V
Mag
ADU's
(/pix)
Comments
01-05
22:43
0
zenith
E
bias


78
clouds are thick, I will double the time.
06-10
22:58
6
zenith
E
flat


3862
had to largely tweak focus
11
23:37
300
+4:10
E
Th-Ar comp


108
Shutter error x2, using turbo mode
12
23:46
600
+4:18
E
alpha Cyg
A2Ia
1.25
289
#13 Th-Ar 23:58 not sure if focus is correct
14
0:17
3600
+1:41
E
6 Cas
A3Ia+
5.43
120
#15 Th-Ar 1:19
16
1:37
600
+2:11
E
alpha Cas
K0-IIIa 2.23
129
#17 Th-Ar 1:50 RH=83%
18
2:26
2700
+0:11
E
HR 1035
B9Ia
4.26
116
#19 Th-Ar 3:14 Turbo mode is creating a white background glow, making it hard to see fainter stars. I shut the camera cooling off, and shut off turbo mode.  clouds
20
3:38
3600
+1:15
E
psi Per
B5Ve
4.3
129
#21 Th-Ar 4:40 clouds RH=88%
22
5:00
600
+1:00
E
beta Ori
B8Ia
0.12
99
#23 Th-Ar 5:13 thick clouds; counts are terrible!
24
5:29
1200
+1:07
E
epsilon Ori
B0Ia
1.7
160
#25 Th-Ar 5:52 clouds still
26
6:05
1200
+1:39
E
zeta Ori
O9.5Ib
2.03
144
#27 Th-Ar 6:28 RH=92%
28
6:41
1800
+2:18
E
zeta Tau
B2IVe
3.0
208
#29 Th-Ar 7:14 clouds cleared a bit
30-34
7:22
0
moving
E
bias


79
RH=95% have to close
35-39
7:34
6
zenith
E
flat


3858