CCD Observing Log of Ritter Observatory
Page  1 of  1

Echelle settings UT Date:  7 Sep 2005
 Observer:  NDM
 LDS Settings
X-Disp Tilt: 235.0 λc: Hα Exposure:  20050907.*
 Temp.:  33 C
 RH (%):  66 Grating: 6 λc: Hα Tilt: 3o
Echelle Tilt: 21.95 Slit: 275 Sky Conditions:  Brk clds/cirrus
 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
 0:20
 0
E
 Bias

79
 Stadium lights are on.
06-10
 0:43
 3
E
 Flat

4248
 Lamp much brighter, inserted smaller aperture
11
 0:56
 300
E
 Th-Ar

101
12
 1:05
 300
 +0:53
 E
 betaOph K2 III
 2.8
 98
13
 1:18
 300
 +1:05
 E
 "
 "
 "
 101
 Moved down on fiber
14
 1:27
 300
 +1:15
 E
 "
 "
 "
 88
 Focus IN ... bad idea ...
15
 1:39
 300
 +1:26
 E
 "
 "
 "
 108
 Focus OUT twice. Central dot is brighter.
16
 1:48
 300
 +1:37
 E
 "
 "
 "
 114
17
 1:56
 300
 +1:44
 E
 "
 "
 "
 128
 Focus OUT again
18
 2:09
 300
 +1:57
 E
 "
 "
 "
 108
 Focus out, then in (indecision ...)
19
 2:29
 300
 +2:17
 E
 "
 "
 "
 163
 More focus fiddling. Look for bright, round central dot. OK!
20 2:37
 300
E
 Th-Ar

102
 Backing up only 01-11 and 20 onward. Don't reduce others.
21 2:47
 300
 +2:35
 E
 betaOph K2 III
 2.8
 132
 Seeing is worse now ... #22 2:55 Th-Ar
23
 3:07
 300
 -0:03
 E
 alpha Cyg A2Ia
 1.3
 147
 Haze is worse too, easily a factor of 2 ... #24 3:15 Th-Ar
25
 3:24
 300
 +0:14
 E
 "
 "
 "
 154
 #26 3:33 Th-Ar
27
 3:45
 3600
 +0:17
 E
 59 Cyg
 Be
 4.7
 120
 #28 4:48 Th-Ar
29-33
 4:56
 0
E
 Bias

82
34-38
 5:08
 9
E
 Flat

4649
 Lamp is dimmer again.