CCD Observing Log of Ritter Observatory
Page  1 of  1

Echelle settings UT Date:  2005 Aug 28
Observer:  NDM
LDS Settings
X-Disp Tilt: 235.0 λc: Hα Exposure:  20050828.*
Temp.:  33 C
RH (%):  65 Grating: 6 λc: Hα Tilt: 3o
Echelle Tilt: 21.95 Slit: 275 Sky Conditions:  Clear/light haze
Slit: 255 Det. Temp.: -95oC Focus: 5.70


Exp #
Start Time
(UT)
Dur
(s)
HA
Start
E/L
Object
Sp. Type
V
Mag
ADU's
(/pix)
Comments
01-05
0:49
0

E
Bias


81
Echelle only tonight. Using formerly LDS fiber.
06-10
1:10
3

E
Flat


4203
Changed fiber no. in header generator to 3.
11
1:29
300

E
Th-Ar


102
Largest mask is in front of flat lamp. Th-Ar OK.
12
1:40
300
+0:48
E
beta Oph
K2III
2.8
81
Other hole, eh?
13
2:28
300
+1:37
E
"
"
"
111
Bright reflection at center of RH fiber; tried refocusing
14
2:44
300
+1:53
E
"
"
"
94
Adjust focus OUT
15
3:01
300
+2:09
E
"
"
"
90
In again; move down on fiber, get lower cts, still bright dot in ctr
16
3:12
300
+2:21
E
"
"
"
93
Bright dot, low counts, faint hint of spikes
17
3:25
300
+2:34
E
"
"
"
93
New focus (in, out again) but similar. Low on fiber.
18
3:48
300
-0:01
E
alpha Cyg
A2Ia
1.3
102

19
4:52
300
+1:03
E
"
"
"
114
In upper lobe, bright central dot, faint spider
20
5:06
300
+1:17
E
"
"
"
101

21
5:46
300
+1:57
E
"
"
"
347
One more try .. same focus as left fiber, same y .. FOUND IT
22
5:57
300

E
Th-Ar


103
OK, just one science exposure!
23
6:06
300
+2:17
E
alpha Cyg
A2Ia
1.3
312

24
6:15
300

E
Th-Ar


103

25
6:24
300
+2:35
E
alpha Cyg
A2Ia
1.3
301
Focus INslightly. Worse, but conditions may be deteriorating.
26
6:32
300

E
Th-Ar



Time to quit. Backing up only #1-11 and 22-36.
27-31
6:47
4

E
Flat


4385
RH 89%
  32-36 6:59    Bias      82