Image #
Julian Day
Δv
Gliese 876
0757-0840536
(C1)
Noise Error ± Mag
Image Name
2
2453211.229
4.375
10.504
14.879
0.007
X2253V2470003CFT.fits
4
2453211.241
4.381
10.141
14.522
0.006
X2253V2470005CFT.fits
5
2453211.245
4.375
10.198
14.572
0.006
X2253V2470006CFT.fits
6
2453211.250
4.363
10.146
14.509
0.006
X2253V2470007CFT.fits
7
2453211.255
4.374
10.068
14.442
0.006
X2253V2470008CFT.fits
8
2453211.260
4.362
10.233
14.595
0.006
X2253V2470009CFT.fits
9
2453211.266
4.363
10.064
14.427
0.006
X2253V2470011CFT.fits
10
2453211.270
4.376
10.149
14.525
0.006
X2253V2470012CFT.fits
11
2453211.276
4.371
10.116
14.487
0.006
X2253V2470016CFT.fits
12
2453211.281
4.386
10.131
14.517
0.006
X2253V2470017CFT.fits
13
2453211.285
4.366
10.275
14.641
0.006
X2253V2470018CFT.fits
14
2453211.288
4.371
10.269
14.640
0.006
X2253V2470019CFT.fits
15
2453211.291
4.372
10.119
14.491
0.006
X2253V2470020CFT.fits
16
2453211.296
4.373
10.157
14.530
0.006
X2253V2470023CFT.fits
17
2453211.298
4.372
10.192
14.564
0.006
X2253V2470024CFT.fits
18
2453211.302
4.366
10.545
14.911
0.007
X2253V2470025CFT.fits
19
2453211.305
4.371
10.932
15.303
0.009
X2253V2470026CFT.fits
20
2453211.309
4.350
11.070
15.420
0.010
X2253V2470027CFT.fits
21
2453211.313
4.386
10.193
14.579
0.006
X2253V2470029CFT.fits
22
2453211.316
4.369
10.258
14.627
0.006
X2253V2470032CFT.fits
23
2453211.319
4.366
10.236
14.602
0.006
X2253V2470033CFT.fits
24
2453211.324
4.374
10.297
14.671
0.006
X2253V2470034CFT.fits
25
2453211.327
4.368
10.284
14.652
0.006
X2253V2470035CFT.fits
26
2453211.330
4.375
10.314
14.689
0.007
X2253V2470036CFT.fits
27
2453211.333
4.383
10.332
14.715
0.007
X2253V2470037CFT.fits
28
2453211.337
4.397
10.265
14.662
0.006
X2253V2470040CFT.fits
29
2453211.341
4.369
10.375
14.744
0.007
X2253V2470041CFT.fits
30
2453211.344
4.386
10.366
14.752
0.007
X2253V2470042CFT.fits
31
2453211.348
4.355
10.464
14.819
0.007
X2253V2470043CFT.fits
32
2453211.351
4.386
10.770
15.156
0.010
X2253V2470044CFT.fits
Avg
4.373
10.315
14.688
Max
4.397
11.070
15.420
Min
4.350
10.064
14.427
Range
0.047
1.006
0.993
Max – Avg
0.024
0.755
0.732
Avg – Min
0.023
0.251
0.261
It is not unusual for one observatory to want to blend its data with
the data obtained from one or more other observatories to obtain greater
confidence in a research outcome.
However each observatory will typically have a different filter/CCD
combination. Each filter will differ
from a perfect band pass match for the ideal U, B, V, R, or I filters and no
two CCD chips will have exactly the same response over their entire spectrum of
sensitivity; therefore, certain procedures have been developed that are meant
to compensate for this fact. They
involve calculations that will effectively convert raw magnitude differences to
standard magnitude differences and allow direct comparison of data from
different observatories. (Benson 42) A
discussion of these calculations will begin in the next paragraph. If you are not going to be blending your
observation data with observations done at another location, you can skip to
the part of this documentation labelled Analysis of the Photometric Data.
Star
V-I
v-i
v
i
G876
1.704
2.930
10.119
7.189
1.704
2.826
10.193
7.367
1.704
2.903
10.332
7.429
C1
0.980
0.855
14.491
13.636
0.980
0.783
14.579
13.796
0.980
0.849
14.715
13.866
C2
1.22
1.304
16.429
15.125
1.22
1.131
16.506
15.375
1.22
1.138
16.645
15.507
Image_#
Julian Day
ΔV
Δv
± Error
(SNR+σ)
2
2453211.229
4.129
4.375
0.017
4
2453211.241
4.135
4.381
0.016
5
2453211.245
4.128
4.374
0.016
6
2453211.250
4.117
4.363
0.016
7
2453211.255
4.128
4.374
0.016
8
2453211.260
4.116
4.362
0.016
9
2453211.266
4.117
4.363
0.016
10
2453211.270
4.130
4.376
0.016
11
2453211.276
4.125
4.371
0.016
12
2453211.281
4.140
4.386
0.016
13
2453211.285
4.120
4.366
0.016
14
2453211.288
4.125
4.371
0.016
15
2453211.291
4.126
4.372
0.016
16
2453211.296
4.127
4.373
0.016
17
2453211.298
4.126
4.372
0.016
18
2453211.302
4.120
4.366
0.017
19
2453211.305
4.125
4.371
0.019
20
2453211.309
4.104
4.350
0.020
21
2453211.313
4.140
4.386
0.016
22
2453211.316
4.123
4.369
0.016
23
2453211.319
4.120
4.366
0.016
24
2453211.324
4.128
4.374
0.016
25
2453211.327
4.122
4.368
0.016
26
2453211.330
4.129
4.375
0.017
27
2453211.333
4.137
4.383
0.017
28
2453211.337
4.151
4.397
0.016
29
2453211.341
4.123
4.369
0.017
30
2453211.344
4.140
4.386
0.017
31
2453211.348
4.109
4.355
0.017
32
2453211.351
4.140
4.386
0.020
Avg
4.127
4.373
Max
4.151
4.397
Min
4.104
4.350
Range
0.047
0.047
Max-Avg
0.024
0.024
Avg-Min
0.023
0.023
FWG
(FITS Working Group), Definition of the Flexible Image Transport System
(FITS), International Astronomical Union, (2008) 1-131
