CCD Observing Log of Ritter Observatory
Page  1 of  1

Echelle settings UT Date:  26 Sept 2006
Observer: KSB + class/NDM
LDS Settings
X-Disp Tilt: 235.0 λc: Hα Exposure: 20060926.x
 Temp. (°C):  27
RH (%): 55
Grating: 6 λc: Hα Tilt: 4o
Echelle Tilt: 21.95 Slit: 275 Sky Conditions: Partly Cloudy/scatt clds
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
1-5
23:50
0
zenith
E
bias


73
 Note: Large LN2 tank changed
6-10 00:00
1
zenith
E
flat


3716

11
0:19
300
zenith
E
Th-Ar


109

12
aprox. 0:30
300
-01:10
E
alpha Cyg
A2 Ia
1.25

Through very thick clouds; No valid data









Clouded up, closing down

13

5:36

0



E

Bias





75

Don't reduce #11,12
14
5:51
300

E
Th-Ar


112
RH 87%
15
5:59
300
+0:04
E
alpha Cas
K0IIIa
2.2
370
#16 6:07 Th-Ar
17
6:18
3600
+1:04
E
LQ And
B4Vne
6.5
127
#18 7:20 Th-Ar
19
7:33
1800
+0:35
E
phi Per
B2Vpe
4.1
386
#20 8:06 Th-Ar
21-25
8:14
0

E
Bias


78
RH 95%; close
26-30
8:27
1

E
Flat


3879