Science > Surveys > Little Things > Data > ngc1569 > n1569_jhkcalib.txt

n1569_jhkcalib.txt

The following calibration format can be used directly in
IRAF.digiphot.photcal.invertfit. The instrumental magnitudes
mJ, mH, and mK are -2.5*log(counts/s)+25.

For the these images, the average parameters for JHK are the following:
Airmass---1.18, 1.24, 1.38
Integration time (s)---10.94, 5.94, 3.93
Pixel scale (arcsec)---1.5, 1.5, 1.5

# Tue 10:45:34 25-Nov-2003
begin JFIT
status 0 (Solution converged)
variance 0.002250701
stdeviation 0.04744155
avsqerror 0.002249231
averror 0.04742606
avsqscatter 0.001558886
avscatter 0.03948274
chisqr 1.000653
msq 0.002025631
rms 0.04500701
reference mJ
fitting J+j1+j2*XJ+j3*JH
weights photometric
parameters 3
j1 (fit)
j2 (fit)
j3 (fit)
derivatives 3
0.1
0.1
0.1
values 3
3.662113
0.05894028
-0.02650328
errors 3
0.06041531
0.03947137
0.04283595

# Tue 10:46:42 25-Nov-2003
begin HFIT
status 0 (Solution converged)
variance 0.002945108
stdeviation 0.05426885
avsqerror 0.003733531
averror 0.06110263
avsqscatter 0.003032221
avscatter 0.05506561
chisqr 0.7888265
msq 0.002685246
rms 0.05181936
reference mH
fitting (J-JH)+h1+h2*XH+h3*JH
weights photometric
parameters 3
h1 (fit)
h2 (fit)
h3 (fit)
derivatives 3
0.1
0.1
0.1
values 3
3.837981
0.02535437
0.0664708
errors 3
0.08073025
0.05371833
0.05806206

# Fri 15:22:39 23-Apr-2004
begin KFIT
status 0 (Solution converged)
variance 0.001483975
stdeviation 0.0385224
avsqerror 0.001482641
averror 0.03850508
avsqscatter 4.644887E-4
avscatter 0.021552
chisqr 1.0009
msq 0.001377977
rms 0.03712111
reference mK
fitting (J-JH-HK)+k1+k2*XK+k3*HK
weights photometric
parameters 3
k1 (fit)
k2 (constant)
k3 (fit)
derivatives 3
0.1
0.1
0.1
values 3
4.434642
0.03
-0.1682238
errors 3
0.01006497
0.
0.198944