CCD Observing Log of Ritter Observatory
Page  1 of  1

Echelle settings UT Date:  20 Dec 2005
Observer: NDM
LDS Settings
X-Disp Tilt: 235.0 λc: Hα Exposure: 20051220.*
Temp.: -3°C
RH (%): 75
Grating: 6 λc: Hα Tilt: 3o
Echelle Tilt: 21.95 Slit: 275 Sky Conditions: Clear/cloudy/pt cloudy
Slit: 255 Det. Temp.: -95oC Focus: 5.70


Exp #
Start Time
(UT)
Dur
(s)
HA
Start
E/L
Object
Sp. Type
V
Mag
ADU's
(/pix)
Comments
01-05
22:30
0

E
Bias


77

06-10
22:46
3

E
Flat


3646
Seeing is bad.
11
23:01
300

E
Th-Ar


121

12
23:10
600
+2:50
E
alpha Cyg A2Ia
1.3
266
#13 23:22 Th-Ar
14
23:35
3600
+2:11
E
nu Cep
A2Ia
4.3
157
#15 0:38 Th-Ar
16
0:51
1420 +1:18
E
rho Cas
G2IaOe
4.4
107
Abort - clds. Close telescope.... #17 1:18 Th-Ar
18-22
1:40
3

E
Flat


2500?
Clds look extensive. Close.
23
2:27
300

E
Th-Ar


120
Sucker hole?
24
2:35
1200
+2:00
E
gamma Cas B0IVe
2.4
226
#25 2:58 Th-Ar ... More clds; close telescope cover
26-30
3:06
0

E
Bias


78
Give up. Close.
31-35
3:19
3

E
Flat


3066