gv30809 Data Log
gv30809.datalog: Reduction Log for gv30809
Reducer: Reed Riddle
File: /wet/xcov23/kpd1930/raw/gv30809
File format: Quilt 9
Reduction date & time: 30 August 2003 03:56:14
Observers: GV
Run name: gv30809
Acquisition software: Quilt 9
Extraction software: Quilt 9
Object: KPD 1930+2752
Observatory: Observatoire Haute-Provence
Telescope: 1.93m
Number of channels: 3
Number of data points: 4053
TIME INFORMATION
Start Date & time (UT): 29 August 2003 19:55:00.000
End Date & time (UT): 30 August 2003 01:32:40.000
Exposure time (s): 5.000000
Readout time (s): 0.000000
Cycle time (s): 0.000000
Drift (s): 0.000000
File time format: TIME_PMT_SYSTEM
PHOTOMETER INFORMATION
Photometer name: Chevreton
Photometer type: PMT
Filter: CLEAR
Aperture setup: One sky for all apertures
Aperture size (pixels): 0.000000
Aperture shape: Circle
Aperture scaling: 1.00 1.00 1.00
CHANNEL INFORMATION
Channel 1: DATA CHANNEL SKY: Channel 3
Channel 2: COMP CHANNEL SKY: Channel 3
Channel 3: SKY CHANNEL Smoothing: 9
REDUCTION OPERATIONS SUMMARY
Reduction started: 30 August 2003 03:56:14 UTC
MATH: SUBTRACTION Channel 3
MATH: ADDITION Channel 3
DEAD TIME REDUCTION: Channels 1 2 3
SKY SUBTRACTION: Channels 1 2
SKY DIVISION: Channels 1
EXTINCTION: Channels 1 2
CHANNEL 1 OPERATIONS
DEAD: Ch 1 Time = 15.00ns Maximum loss is 0.266% at point 2850
SKY_SUB: Channel 3 subtracted, smoothed by 9, sky ratio 1.125436
SKY_DIV: Ch 1 divided by all comparison channels, smoothing factor 1
EXTINC: Channel 1 extinction coefficient 0.060000
Channel 1 average data value: 63990.573
Channel 1 barycentric correction: 275.238
Channel 1 leap second correction: 64.184
CHANNEL 2 OPERATIONS
DEAD: Ch 2 Time = 15.00ns Maximum loss is 0.691% at point 1741
SKY_SUB: Channel 3 subtracted, smoothed by 9, sky ratio 0.943825
EXTINC: Channel 2 extinction coefficient 0.200000
Channel 2 average data value: 251924.007
Channel 2 barycentric correction: 275.238
Channel 2 leap second correction: 64.184
CHANNEL 3 OPERATIONS
MATH: SUBTRACTION Range 39-4005 Value 2077.000000
MATH: ADDITION Range 4007-4052 Value 1000.000000
DEAD: Ch 3 Time = 15.00ns Maximum loss is 0.123% at point 4006
Channel 3 average data value: 22038.619
Channel 3 barycentric correction: 275.238
Channel 3 leap second correction: 64.184
SKY POINTS
CH 1 CH 2 CH 3
========================================================================
0 0
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
10 10
11 11
12 12
13 13
14 14
15 15
16 16
17 17
18 18
19 19
20 20
21 21
22 22
23 23
24 24
25 25
26 26
27 27
28 28
29 29
30 30
31 31
32 32
33 33
34 34
35 35
36 36
37 37
4007 4007
4008 4008
4009 4009
4010 4010
4011 4011
4012 4012
4013 4013
4014 4014
4015 4015
4016 4016
4017 4017
4018 4018
4019 4019
4020 4020
4021 4021
4022 4022
4023 4023
4024 4024
4025 4025
4026 4026
4027 4027
4028 4028
4029 4029
4030 4030
4031 4031
4032 4032
4033 4033
4034 4034
4035 4035
4036 4036
4037 4037
4038 4038
4039 4039
4040 4040
4041 4041
4042 4042
4043 4043
4044 4044
4045 4045
4046 4046
4047 4047
4048 4048
4049 4049
4050 4050
4051 4051
4052 4052
GARBAGE POINTS
CH 1 CH 2 CH 3
========================================================================
38 38
1044 4006
1053
1055
1056
1057
2850
4006