CCD Observing Log of Ritter Observatory
Page  1 of  1

Echelle settings UT Date:  10 Apr 2005
Observer:  NDM
LDS Settings
X-Disp Tilt 235.0 Wavelength H alpha Exposure:  20050410.*
Temp.:  18C RH (%):  62 Grating 6 Wavelength 5500 A Tilt 359.5
Echelle Tilt 20.55 Slit 275 Sky Conditions: Cirrus
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
1:36
0

E
Bias


74
Cleared up, but this is a relative term.
06
1:40
0

L
Bias (5X)


128

07-11
1:51
4

E
Flat


4474

12
1:52
10

L
Flat (5X)


3281
Temp locked during exposure, then started drifting again.
13
2:07
300

E
Th-Ar


102

14
2:16
300
+2:10
E
beta Gem
K0IIIb
1.1
191
#15 2:23 Th-Ar
16
2:41
3600
-2:12
E
kappa Dra
B6IIIpe
3.9
187
Cirrus thinner but seeing not very good.Getting this star done in case it clouds up again.
17
3:44
300

E
Th-Ar


105

18
3:57
3600
-0:38
E
delta UMa
A3V var
3.0
209
#19 5:00 Th-Ar
20
5:19
180

L
Fe-Ar


233

21
5:25
180
+1:14
L
beta Vir
F9V
3.6
388
#22 5:30 Fe-Ar  Clds returning, do longer exposure; adj focus
23
5:35
360
+1:25
L
"
"
"
961
Temp is now locked. #24 5:43 Fe-Ar
25
6:08
180 -2:48
L
zeta Oph
O9.5Vn
2.6
975
Telluric std. #26 6:13 Fe-Ar #27 6:35 Th-Ar
28
6:46
1800
-2:25
E
zeta Oph
"
"
238
#29 7:19 Th-Ar
30
7:33
1800
-0:46
E
delta Sco
B0.3IVe
1.6
602
#31 6:02 Th-Ar ... Seems to be clear again ... #32 8:26 Fe-Ar
33
8:33
600
-3:37
L
omicron Aql
F8V
5.1
557
#34 8:44 Fe-Ar
35
9:05
1800
-3:34
L
WR 140
WC 6
6.9
431
#36 9:37 Fe-Ar
37
9:42
1800
-2:57
L
WR 140
"
"
458
#38 10:13 Fe-Ar
39-43
10:23
4

E
Flat


3858
#46-50 10:36 Bias
  44 10:25  10    Flat (5X)      3993
 #45 10:35 Bias (5X) #51 Dark 1800s (12X)