CCD Observing Log of Ritter Observatory
Page  1 of  1

Echelle settings UT Date:  2005 April 5
 Observer:  ENH/NNS
 LDS Settings
X-Disp Tilt 235.0 Wavelength H alpha Exposure:  20050405.*
 Temp.:  25C RH (%):  43 Grating 6 Wavelength 5500 A Tilt 359.5
Echelle Tilt 20.55 Slit 275 Sky Conditions: a few clouds, clear to morning
 Det. Temp. -95C Slit ~200 microns Focus 6.45


Exp #
Start Time
(UT)
Dur
(s)
HA
Start
E/L
Object
Sp. Type
V
Mag
ADU's
(/pix)
 Comments
01-05
 0:26
 0
E
 Bias

76
06-10
 0:42
 4
E
 Flat

3724
11
 1:11
 300
E
 Th-Ar

95
12
 1:19
 300
 +3:24
 E
 Beta Ori
 B8 Ia
 0.1
 152
 #13 1:27 Th-Ar
14
 1:40
 600
 +3:19
 E
 Zeta Ori
 O9.5 Ib
 2.05
 144
 #15 1:55 Th-Ar
16
 2:14
 3600
 +3:23
 E
 3 Gem
 B2.5 Ibe
 5.76
 104
 feeling ambitious here... um, yeah.  #17 3:17 Th-Ar
18
 3:36
 2400
 +1:10
 E
 Epsilon Leo
 G1 IIab
 2.98
 324
 #19 4:19 Th-Ar
20
 4:34
 600
 +1:45
 E
 Alpha Leo
 B7 Vn
 1.35
 269
 #21 4:47 Th-Ar
22
 5:06
 900
 +0:32
 E
 gamma UMa
 A0 V
 2.44
 155
 #23 5:23 Th-Ar
24
 5:39
 3600
 +0:25
 E
 kappa Dra
 B6 IIIpe
 3.87
 206
 #25 6:45 Th-Ar  Going to LDS to get high airmass on #28
26
 6:00
 0
L
 Bias (5X)

129
 Flats at end of night
27
 6:40
 180
L
 Fe-Ar

194
 RH 60%
28
 7:59
 120
 -1:17
 L
 zeta Oph
 O9.5 Vn
 2.56
 810
 #29 8:05 Fe-Ar  Switching to Echelle for delta Sco
30
 8:18
 1200
 -0:21
 E
 delta Sco
 B0.3 IVe
 1.6
 228
 #31 8:41 Th-Ar
32
 9:54
 1000
 -3:05
 L
 WR 140
 WC 6
 6.87
 279
 #33 10:20 Fe-Ar (set for 1800, seems to have run for 1000 s)
34
 10:27
 600
 -2:52
 E
 alpha Cyg
 A2 Ia
 1.25
 221
 #35 10:40 Th-Ar  - twilight descends
36-40
 10:54
 4
E
 Flat

4596
41
 10:55
 10
L
 Flat (5X)

3048
42
 10:57
 0
L
 Bias (5X)

135
  43-47 11:07
 0 
   E 
 Bias
     76