Transformation coefficients for K35

K35 has now been used in about a dozen nights for photometric calibration, and so we have a pretty good handle on the transformation coefficients.  They are:

Tv [B-V] = -0.008 +/- 0.010

Tbv = 0.983 +/- 0.016

Tvr = 1.024 +/- 0.023

Tri = 1.001 +/- 0.022

Tvi = 1.028 +/- 0.018

The mean extinction coefficients are:

Kv = 0.140 +/- 0.015

Kbv = 0.138 +/- 0.016

Kvr = 0.041 +/- 0.009

Kri = 0.035 +/- 0.008

Kvi = 0.076 +/- 0.009

These numbers are fairly typical of the Astrodon interference filters plus an STL-1001E camera.

Note: The Astrodon B filter has a red leak; you should not take data of objects that are redder than (B-I) = 5 without corrections.