d69_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---1.22, 1.04, 1.1
Integration time (s)---1800, 2400, 1200
Pixel scale (arcsec)---1.134, 1.134, 1.134
# Thu 17:22:21 30-May-2002
begin BFIT
status 0 (Solution converged)
variance 2.919443E-4
stdeviation 0.01708638
avsqerror 2.934487E-4
averror 0.01713034
avsqscatter 9.893559E-5
avscatter 0.009946637
chisqr 0.9948735
msq 2.822128E-4
rms 0.01679919
reference m1
fitting (BV+V)+b1+b2*X1+b3*BV+b4*BV*X1
weights photometric
parameters 4
b1 (constant)
b2 (fit)
b3 (constant)
b4 (constant)
derivatives 4
0.1
0.1
0.1
0.1
values 4
3.434
0.3398903
-0.0157
0.
errors 4
0.
0.002096669
0.
0.
# Thu 17:23:06 30-May-2002
begin VFIT
status 0 (Solution converged)
variance 3.533681E-4
stdeviation 0.01879809
avsqerror 3.510584E-4
averror 0.01873655
avsqscatter 1.724228E-4
avscatter 0.01313099
chisqr 1.006579
msq 3.402804E-4
rms 0.01844669
reference m2
fitting V+v1+v2*X2+v3*BV+v4*BV*X2
weights photometric
parameters 4
v1 (constant)
v2 (fit)
v3 (constant)
v4 (constant)
derivatives 4
0.1
0.1
0.1
0.1
values 4
3.009
0.2183592
0.0415
0.
errors 4
0.
0.002304921
0.
0.
# Thu 11:50:02 11-Jul-2002
begin UFIT
status 0 (Solution converged)
variance 0.004286912
stdeviation 0.06547451
avsqerror 0.004285706
averror 0.06546531
avsqscatter 0.003317559
avscatter 0.05759826
chisqr 1.000281
msq 0.004224783
rms 0.06499833
reference mU
fitting (UB+BV+V)+u1+u2*XU+u3*BV+u4*UB*XU
weights photometric
parameters 4
u1 (fit)
u2 (constant)
u3 (constant)
u4 (constant)
derivatives 4
0.1
0.1
0.1
0.1
values 4
5.251
0.459
-0.121
0.
errors 4
0.003
0.
0.
0.
