CCD Observing Log of Ritter Observatory
Page  1 of  1

Echelle settings UT Date:  29 Jan 2005
Observer:  NDM LDS Settings
X-Disp Tilt 235.0 Wavelength H alpha Exposure:  20050129.* Temp.:  +4C RH (%):  68 Grating 6 Wavelength 5500 A Tilt 359
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
22:43
0

E
Bias


72
No data - do not reduce, save for historical purposes
06
22:46
0

L
Bias (5x)


133

07-11
22:56
6

E
Flat


3111

12
22:58
30

L
Flat (5x)


4297

13
23:21
300

E
Th-Ar


77
Focus changed quite a bit from last night
14
23:30
600
+5:48
E
alpha Cyg
A2Ia
1.3
95
Check whether right comp lamp.
15
23:46
300

E
Th-Ar


77
Give up on WR 140 for tonight! Clouds!
16
23:56
180

L
Fe-Ar



Comp lamp was dim, but correct. Checked against last night.
17
02:09
0

E
Bias


70
Clds cleared, re-open, check bias.
18
02:36
600

E
Th-Ar


88
Note comp power supply is 500 V as per spec. Redo @ 600s
19
02:49
900
+0:13
E
epsilon Ori
B0Ia
1.7
99
Through clouds
20
03:36
180

L
Fe-Ar


181
Comp lines are fat & fuzzy, as if there is frost on  CCD1's window.
21
04:04
3600
30:13
L
HD 50138
B9e 6.7

Don't use echelle until further notice!









Exp 21 aborted for clds, but camera does not read out aborted images!