Science > Surveys > Little Things > Data > ic1613 > ic1613_ubvcalib.txt

ic1613_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---1.25, 1.44, 1.28
Integration time (s)---1800, 600, 600
Pixel scale (arcsec)---1.134, 2.31, 2.31

# Mon 14:18:27 13-May-2002
begin BFIT
status 0 (Solution converged)
variance 0.005792269
stdeviation 0.07610696
avsqerror 1.
averror 1.
avsqscatter 0.
avscatter 0.
chisqr 0.005792269
msq 0.005605422
rms 0.07486936
reference mB
fitting (BV+V)+b1+b2*XB+b3*BV+b4*BV*XB
weights uniform
parameters 4
b1 (fit)
b2 (fit)
b3 (fit)
b4 (constant)
derivatives 4
0.1
0.1
0.1
0.1
values 4
4.198739
0.3198709
0.05321241
0.
errors 4
0.07691998
0.05624191
0.01461287
0.

# Mon 14:26:59 13-May-2002
begin VFIT
status 0 (Solution converged)
variance 8.763281E-4
stdeviation 0.02960284
avsqerror 1.
averror 1.
avsqscatter 0.
avscatter 0.
chisqr 8.763281E-4
msq 8.467890E-4
rms 0.02909964
reference mV
fitting V+v1+v2*XV+v3*BV+v4*BV*XV
weights uniform
parameters 4
v1 (fit)
v2 (fit)
v3 (fit)
v4 (constant)
derivatives 4
0.1
0.1
0.1
0.1
values 4
4.023283
0.1690694
0.006677317
0.
errors 4
0.02940393
0.02125077
0.005778548
0.

# Thu 11:51:13 11-Jul-2002
begin UFIT
status 0 (Solution converged)
variance 0.002407606
stdeviation 0.04906736
avsqerror 0.002406685
averror 0.04905798
avsqscatter 0.001459845
avscatter 0.03820792
chisqr 1.000382
msq 0.002360398
rms 0.04858392
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.