CCD Observing Log of Ritter Observatory
Page  1 of  

Echelle settings UT Date:  2004-Jan-17 Observer:  NDR LDS Settings
X-Disp Tilt 235.0 Wavelength H alpha Exposure:  20040117.* Temp.:  1 C
RH (%):  70 Grating 6 Wavelength 5500 A Tilt 359
Echelle Tilt 20.55 Slit 275 Sky Conditions:  mostly clear
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
22:43
0

E
Bias


72
Light dusting of snow on ground.
06-10
22:58
4

E
Flat


3367
We'll see how long the sky conditions hold
11
23:22
300

E
Th-Ar


85

12
23:29
300
+1:00
E
alpha Cas
K0IIIa
2.23
96
RV Standard- focus and seeing bad- tweaked focus- try again
13
23:38
600
+1:10
E
alpha Cas
K0IIIa
2.23
167
seeing bad- staying to bright targets   #14  23:58  Th-Ar
15
0:06
1800
+1:21
E
gamma Cas
B0IVe
2.47
398
*** #16  0:43  Th-Ar
17
0:57
600
-2:05
E
beta Ori
B8Ia
0.12
308
tweaked focus - still uncertain      #18  1:16  Th-Ar
19
1:26
1200
-1:57
E
epsilon Ori
B0Ia
1.70
177
#20  1:57  Th-Ar 
21
2:04
1500
-1:23
E
zeta Ori
O9.5Ib
2.05
183
#22  2:  Th-Ar
22
2:39
300

E
Th-Ar


85
transparency and seeing horrible; some clouds- closing
23-27
2:47
0

E
Bias


72

28-32
3:09
5

E
Flat


3175