CCD Observing Log of Ritter Observatory
Page  1 of  1

Echelle settings UT Date: 2007 Jan 17
 Observer:   KSB/NDM
 LDS Settings
X-Disp Tilt: 235.0 λc: Hα Exposure: 20070117.*
 Temp. (°C):  2
 RH (%):   70
 Grating: 6 λc: Hα Tilt: 4o
Echelle Tilt: 21.95 Slit: 275 Sky Conditions:   clear w/ some light cirrus, cold
 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
 22:20
 0
 zenith
 E
 bias

77
 dome a bit cranky about opening in the cold...
6-10
 22:38
 5 "
 E
 flat

3783
11
 22:51
 300
 "
 E
 Th-Ar

105
12
 23:15
 300
 +4:43
 E
 alpha Cyg
 A2 Ia
 1.25
 177
 #13  Th-Ar   23:24  ; large hour angle - seeing is so-so
14
 23:50
 2400
 +3:35
 E
 pi Aqr
 B1 Ve
 4.66
 99
 #15  Th-Ar   00:33  ; focus very poor
16
 0:51
 1800
 +3:06
 E
 rho Cas
 G2 IaOe
 4.4
 121
 #17  Th-Ar   01:25  ; tweaked focus
18
 1:40
 2700
 +3:04
 E
 omicron Cas
 B5 III
 4.54
 147
 #19  Th-Ar   02:28
20
 2:43
 900
 +3:56
 E
 gamma Cas
 B0 IVe-sh
 2.47
 259
 #21  Th-Ar   03:01
22
 3:17
 600
 +3:20
 E
 alpha Ari
 K2 IIIab
 2.0
 219
 #23  Th-Ar   03:30 ; RV std ;  RH up to 85%
24
 3:45
 1800
 +4:11
 E
 phi Per
 B2 Vep
 4.07
 125
 #25  Th-Ar   04:18
26
 4:43
 1200
 +1:15
 E
 zeta Tau
 B2 IIIpe-sh
 3.0
 175
 /mnt/data is full; delete some files ... #27  Th-Ar 5:09
28
 5:24
 600
 +1:59
 E
 epsilon Ori
 B0Ia
 1.7
 172
 #29 5:37 Th-Ar ... RH is 91%
30
 5:53
 900
 +2:22
 E
 zeta Ori
 O9.5Ib
 2.0
 190
 #31 6:10 Th-Ar
32
 6:27
 3600
 +2:07
 E
 AX Mon
 B2:IIIpshe
 6.7
 89
 Seeing is better but charge transfer problem in ST-7
33
 7:30
 300
E
 Th-Ar

106
 has become severe; guiding is difficult. Turn off cooling.
34
 7:46
 600
 +0:11
 E
 epsilon Leo
 G1II
 3.0
 140
 AX Mon exposure looks like a waste of time - too bad.
35
 7:59
 300
E
 Th-Ar

107
 Refocused for epsilon Leo.
36
 8:21
 3600
 +0:01
 E
 HD 91120
 B9IV/V
 5.6
 94
 #37 9:24 Th-Ar 
38-42
 9:31
 0
E
 Bias

80
 RH 95% - closing.
 43-47  9:48 5    E 
 Flat      3464
 Blank entry under "HA" defaults to zenith.