CCD Observing Log of Ritter Observatory
Page  1 of  1

Echelle settings UT Date:  31Mar2005
Observer:  DWK, NDM
LDS Settings
X-Disp Tilt 235.0 Wavelength H alpha Exposure:  
Temp.:  27 C
RH (%):  47
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
0:00
0
zenith
E
Bias


77

06
0:28
5

E
Flat


4755

07-10
0:40
4

E
Flat


4884
(5195  max)
11
0:58
300

E
Th-Ar


99

12
1:08
600
2:32
E
epsilon Ori
B0 Ia
1.70
220
#13 1:21 Th-Ar
14
1:39
600
2:59
E
zeta Ori
O9.5 Ib
2.05
139
#15 1:52 Th-Ar     seeing is deteriorating
16
2:22
1800
3:34
E
zeta Tau
B4 IIIp
3.03
178
#17 2:44 Th-Ar     
18
3:04
300
2:19
E
beta Gem
K0 IIIb
1.14
158
#19 3:13 Th-Ar      some small clouds
20
3:31
1200
0:24
E
alpha Leo
B7 Vn
1.35
246
#21 3:54 Th-Ar     weather moving in - closing
22-26
4:03
0

E
Bias


78

27-31
4:18
4

E
Flat


3526