ic10_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---1.33, 1.17, 1.3
Integration time (s)---1200, 1200, 900
Pixel scale (arcsec)---1.134, 1.134, 1.134
# Fri 16:21:54 31-May-2002
begin UFIT
status 0 (Solution converged)
variance 0.003266471
stdeviation 0.05715305
avsqerror 0.003265345
averror 0.0571432
avsqscatter 0.002231684
avscatter 0.0472407
chisqr 1.000345
msq 0.003107131
rms 0.05574164
reference mU
fitting (UB+BV+V)+u1+u2*XU+u3*UB+u4*UB*XU
weights photometric
parameters 4
u1 (fit)
u2 (fit)
u3 (constant)
u4 (constant)
derivatives 4
0.1
0.1
0.1
0.1
values 4
4.97379
0.6303594
-0.0947
0.
errors 4
0.07235418
0.0521051
0.
0.
# Fri 16:33:27 31-May-2002
begin BFIT
status 0 (Solution converged)
variance 6.095189E-4
stdeviation 0.02468844
avsqerror 6.072376E-4
averror 0.02464219
avsqscatter 3.198662E-4
avscatter 0.0178848
chisqr 1.003757
msq 5.959740E-4
rms 0.02441258
reference mB
fitting (BV+V)+b1+b2*XB+b3*BV+b4*BV*XB
weights photometric
parameters 4
b1 (constant)
b2 (fit)
b3 (constant)
b4 (constant)
derivatives 4
0.1
0.1
0.1
0.1
values 4
3.652
0.2300204
-0.0153
0.
errors 4
0.
0.002494009
0.
0.
# Fri 16:33:58 31-May-2002
begin VFIT
status 0 (Solution converged)
variance 9.247058E-4
stdeviation 0.03040897
avsqerror 9.236346E-4
averror 0.03039136
avsqscatter 5.107867E-4
avscatter 0.02260059
chisqr 1.00116
msq 9.062117E-4
rms 0.03010335
reference mV
fitting V+v1+v2*XV+v3*BV+v4*BV*XV
weights photometric
parameters 4
v1 (constant)
v2 (fit)
v3 (constant)
v4 (constant)
derivatives 4
0.1
0.1
0.1
0.1
values 4
3.22
0.1205604
-0.0141
0.
errors 4
0.
0.00257552
0.
0.
