CCD Observing Log of Ritter Observatory
Page  1 of  2

Echelle settings UT Date:  2005 - Apr 4
 Observer:  NDR/NDM
 LDS Settings
X-Disp Tilt 235.0 Wavelength H alpha Exposure:  20050404.*
 Temp.:  18 C
 RH (%):  48 Grating 6 Wavelength H alpha
 Tilt 3
Echelle Tilt 20.55 Slit 275 Sky Conditions:  clear
 Det. Temp. -95C Slit ~200 microns Focus 6.25


Exp #
Start Time
(UT)
Dur
(s)
HA
Start
E/L
Object
Sp. Type
V
Mag
ADU's
(/pix)
 Comments
01-05
 0:17
 0
E
 Bias

75
 bit of wind to NW, going to avoid that area with telescope
06
 0:21
 0
L
 Bias (5X)

128
 Prospero time 10 minutes fast
07-11
 0:32
 6
E
 Flat

4275
12
 0:32
 10
L
 Flat (5X)

4438
13
 0:57
 300
E
 Th-Ar

95
14
 1:05
 600
 +2:44
 E
 epsilon Ori
 B0Ia
 1.70
 112
 try again for better counts #15 1:19 ThAr
16
 1:28
 900
 +3:08
 E
 "            "
 "
 "
 127
 focus seems good, but counts are bad... #17 1:49 ThAr
18
 1:56
 2400
 +1:44
 E
 beta CMi
 B8Ve
 2.90
 100
 #19 2:51 ThAr
20
 2:59
 600
 +2:30
 E
 beta Gem
 K0IIIb
 1.14
 361
 tweaked focus, seems to have done the trick! #21 3:13 ThAr
22
 3:27
 3600
 +0:36
 E
 eta Leo
 A0Ib
 3.52
 165
23
 4:47
 1
L
 Ne

361
24
 4:51
 1800
 +1:37
 L
 HD 91120
 B8Ve
 5.6
 630
 #25 5:23 Ne
26
 5:32
 300
 +0:58
 L
 beta Vir
 F9V
 3.6
 1151
 #27 5:38 Ne #28 5:47 Th-Ar
29
 5:55
 3600
 +0:37
 E
 kappa Dra
 B6IIIpe
 3.9
 207
 #30 6:58 Th-Ar      seeing bad at low elevation
31
 7:18
 1200
 -1:25
 E
 delta Sco
 B0.3IVe
 1.6
 206
 #32 7:41 Th-Ar
33
 7:54
 3600
 -0:21
 E
 theta CrB
 B6Vnne
 4.1
 134
 #34 8:57 Th-Ar ..... CCD2 temp is not locked. Locked on taking bias image.
35
 9:20
 1
L
 Ne



36
 9:22
 1800
 -3:30
 L
 HD 191612
 O6-8f?p
 7.8
 307
 Temp is locked. #37 9:53 Ne
38
 9:54
 1800
 -2:58
 L
 "
 "
 "
 307
 #39 10:25  - twilight
4 0-44
  10:27 0    E  Bias      77