f564v3_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---1.03, 1.07, 1.14
Integration time (s)---1200, 900, 750750750750
Pixel scale (arcsec)---0.61, 0.61, 0.61

# Tue 14:29:26 14-May-2002
begin UFIT
status 0 (Solution converged)
variance 0.01419573
stdeviation 0.1191458
avsqerror 1.
averror 1.
avsqscatter 0.
avscatter 0.
chisqr 0.01419573
msq 0.01242127
rms 0.1114507
reference mU
fitting (UB+BV+V)+u1+u2*XU+u3*UB+u4*UB*XU
weights uniform
parameters 4
u1 (fit)
u2 (fit)
u3 (fit)
u4 (constant)
derivatives 4
0.1
0.1
0.1
0.1
values 4
3.57078
0.3969172
-0.1194534
0.
errors 4
0.08452704
0.04432307
0.03044868
0.

# Tue 14:30:12 14-May-2002
begin BFIT
status 0 (Solution converged)
variance 0.008268626
stdeviation 0.09093199
avsqerror 1.
averror 1.
avsqscatter 0.
avscatter 0.
chisqr 0.008268626
msq 0.00719011
rms 0.08479451
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
1.744922
0.2157
0.05138599
0.
errors 4
0.07610562
0.03521893
0.03280151
0.

# Tue 14:33:00 14-May-2002
begin VFIT
status 0 (Solution converged)
variance 0.02103762
stdeviation 0.1450435
avsqerror 1.
averror 1.
avsqscatter 0.
avscatter 0.
chisqr 0.02103762
msq 0.01941934
rms 0.1393533
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
1.560629
0.07103309
0.03680699
0.
errors 4
0.1002572
0.04979341
0.04291682
0.

Connect with NRAO

The NSF National Radio Astronomy Observatory and NSF Green Bank Observatory are facilities of the U.S. National Science Foundation operated under cooperative agreement by Associated Universities, Inc.

Founded in 1956, the NSF NRAO provides state-of-the-art radio telescope facilities for use by the international scientific community. NSF NRAO telescopes are open to all astronomers regardless of institutional or national affiliation. Observing time on NSF NRAO telescopes is available on a competitive basis to qualified scientists after evaluation of research proposals on the basis of scientific merit, the capability of the instruments to do the work, and the availability of the telescope during the requested time. NSF NRAO also provides both formal and informal programs in education and public outreach for teachers, students, the general public, and the media.

The U.S. National Science Foundation (U.S. NSF) is an independent federal agency created by Congress in 1950 "to promote the progress of science; to advance the national health, prosperity, and welfare; to secure the national defense..."

AUI collaborates with the scientific community and research sponsors to plan, build, and operate cutting-edge facilities. We cultivate excellence, deliver value, enhance education, and engage the public.