CCD Observing Log of Ritter Observatory
Page  1 of  1

Echelle settings UT Date: 25 Dec 2006
Observer: SJR
LDS Settings
X-Disp Tilt: 235.0 λc: Hα Exposure: 20061225.0*
Temp. (°C): 13
RH (%): 80
Grating: 6 λc: Hα Tilt: 4o
Echelle Tilt: 21.95 Slit: 275 Sky Conditions: mostly clear/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
22:09
0
zenith
E
bias


75
 
06-10
22:27
6
zenith
E
Flat


2934

11
22:44
300
+2:41
E
Th-Ar comp


107

12
22:53
300
+2:50
E
alpha Cyg
A2Ia
1.25
273
#13 Th-Ar 23:02
14
23:25
1800
+3:13
E
55 Cyg
B2.5 Ia
4.84
123
#15 Th-Ar  23:57
16
0:20 2100
+3:12
E
nu Cep
A2Ia
4.29
161
#17  Th-Ar 0:56       RH= 85%
18
1:13
300
+1:10
E
alpha Cas
K0- IIIa
2.23
165
#19 Th-Ar  1:20
20
1:42
1800
+0:37
E
phi Per
B2Vpe
4.1
158
#21 Th-Ar  2:15         Through a slight haze RH=92%









some clouds are out, I'll wait awhile to see if they clear
22-26
2:56
0

E
bias


78
RH=95% have to close
27-31
3:13
5

E
Flat


4418