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