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   Bias      77