CCD Observing Log of Ritter Observatory
Page  1 of  1

Echelle settings UT Date:  11 May 2005
Observer:  NDM
LDS Settings
X-Disp Tilt 235.0 Wavelength H alpha Exposure:  20050511.*
Temp.:  32C RH (%):  42 Grating 6 Wavelength H alpha
Tilt 3
Echelle Tilt 21.95 Slit 275 Sky Conditions:  Scatt clds/clear/scatt clds/cloudy
Slit 240
Det. Temp. -95C Focus 6.28


Exp #
Start Time
(UT)
Dur
(s)
HA
Start
E/L
Object
Sp. Type
V
Mag
ADU's
(/pix)
Comments
01-05
1:16
0

E
Bias


76
Telescope cover flap opened under gravity with a groan.
06
1:23
0

L
Bias 5X


130
Telescope was focused for eyepiece, hit IN button
07-11
1:34
3

E
Flat


3562

12
1:35
5

L
Flat 5X


2835

13
1:48
300

E
Th-Ar


99

14
1:56
300
+3:52
E
beta Gem
K0IIIb
1.1
312
Sharp diffraction spikes ... #15 2:03 Th-Ar
16
2:22
1

L
Ne




17
2:26
1200
+1:35
L
HD 91120
B8Ve
5.6
639
#18 2:48 Ne
19
3:00
300
+0:51
L
beta Vir
F9V
3.6
1033
#20 3:06 Ne #21 3:18 Th-Ar
22
3:25
3600
+0:34
E
kappa Dra
B6IIIpe
3.9
200
Have lost the good focus/seeing ... #23 4:28 Th-Ar
24
4:46
1200
-1:31
E
delta Sco
B0.3IVe
1.6
240
#25 5:09 Th-Ar
26
5:23
3341 -1:21
E
chi Oph
B1.5Ve
4.4
179
Thin clds ... clds at end, abort ... #27 6:22 Th-Ar
28-32
6:42
4

E
Flat


3698
Cloud bank looks extensive. Close.
33
6:44
5

L
Flat 5X


3370

34-38
6:58
0

E
Bias


80

39
7:12
1200

L
Dark 12x


193