d63_ubvcalib.txt

The following calibration format can be used directly in
IRAF.digiphot.photcal.invertfit. The instrumental magnitudes
mU, mB, and mV are -2.5*log(counts/s)+25.

For the these images, the average parameters for UBV are the following:
Airmass---1.36, 1.42, 1.49
Integration time (s)---1800, 1900, 1200
Pixel scale (arcsec)---1.134, 1.134, 1.134

# Thu 13:55:49 06-Jun-2002
begin UFIT
status 0 (Solution converged)
variance 0.005402638
stdeviation 0.07350264
avsqerror 0.005401331
averror 0.07349374
avsqscatter 0.004012552
avscatter 0.06334471
chisqr 1.000242
msq 0.004754321
rms 0.06895158
reference mU
fitting (UB+BV+V)+u1+u2*XU+u3*UB+u4*UB*XU
weights photometric
parameters 4
u1 (fit)
u2 (fit)
u3 (fit)
u4 (constant)
derivatives 4
0.1
0.1
0.1
0.1
values 4
5.172179
0.5305759
-0.1119325
0.
errors 4
0.08649484
0.05988634
0.02177441
0.

# Thu 13:57:11 06-Jun-2002
begin BFIT
status 0 (Solution converged)
variance 0.001453105
stdeviation 0.03811961
avsqerror 0.001451622
averror 0.03810015
avsqscatter 6.935023E-4
avscatter 0.02633443
chisqr 1.001022
msq 0.00132489
rms 0.03639903
reference mB
fitting (BV+V)+b1+b2*XB+b3*BV+b4*BV*XB
weights photometric
parameters 4
b1 (fit)
b2 (fit)
b3 (fit)
b4 (constant)
derivatives 4
0.1
0.1
0.1
0.1
values 4
3.661739
0.2671157
-0.01449246
0.
errors 4
0.03553796
0.02340672
0.01132262
0.

# Thu 13:58:28 06-Jun-2002
begin VFIT
status 0 (Solution converged)
variance 5.154423E-4
stdeviation 0.02270336
avsqerror 5.132827E-4
averror 0.02265574
avsqscatter 2.550269E-4
avscatter 0.01596956
chisqr 1.004208
msq 4.638981E-4
rms 0.02153829
reference mV
fitting V+v1+v2*XV+v3*BV+v4*BV*XV
weights photometric
parameters 4
v1 (fit)
v2 (fit)
v3 (fit)
v4 (constant)
derivatives 4
0.1
0.1
0.1
0.1
values 4
3.206747
0.1810213
-0.01222482
0.
errors 4
0.0240465
0.01481911
0.007297779
0.

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