Science > Surveys > Little Things > Data > ddo53 > d53_ubvcalib.txt

d53_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---1.245, 1.27, 1.3
Integration time (s)---600, 480, 180
Pixel scale (arcsec)---0.42, 0.42, 0.42

# Mon 11:39:32 13-May-2002
begin UFIT
status 0 (Solution converged)
variance 0.001682525
stdeviation 0.0410186
avsqerror 1.
averror 1.
avsqscatter 0.
avscatter 0.
chisqr 0.001682525
msq 0.001009515
rms 0.03177287
reference mU
fitting (UB+BV+V)+u1+u2*XU+u3*UB+u4*UB*XU
weights uniform
parameters 4
u1 (fit)
u2 (constant)
u3 (fit)
u4 (constant)
derivatives 4
0.1
0.1
0.1
0.1
values 4
1.688987
0.4
-0.1248714
0.
errors 4
0.01860653
0.
0.02560335
0.

# Mon 11:39:55 13-May-2002
begin BFIT
status 0 (Solution converged)
variance 3.811201E-5
stdeviation 0.006173493
avsqerror 1.
averror 1.
avsqscatter 0.
avscatter 0.
chisqr 3.811201E-5
msq 1.905601E-5
rms 0.004365318
reference mB
fitting (BV+V)+b1+b2*XB+b3*BV+b4*BV*XB
weights uniform
parameters 4
b1 (fit)
b2 (constant)
b3 (fit)
b4 (constant)
derivatives 4
0.1
0.1
0.1
0.1
values 4
-0.150537
0.3
-0.009756085
0.
errors 4
0.004957617
0.
0.005855678
0.

# Mon 11:40:17 13-May-2002
begin VFIT
status 0 (Solution converged)
variance 4.978733E-4
stdeviation 0.02231308
avsqerror 1.
averror 1.
avsqscatter 0.
avscatter 0.
chisqr 4.978733E-4
msq 3.319155E-4
rms 0.01821855
reference mV
fitting V+v1+v2*XV+v3*BV+v4*BV*XV
weights uniform
parameters 4
v1 (fit)
v2 (constant)
v3 (fit)
v4 (constant)
derivatives 4
0.1
0.1
0.1
0.1
values 4
-0.2973222
0.2
0.03156269
0.
errors 4
0.01709772
0.
0.02092936
0.