INTRODUCTION: Obtaining and using filters; adding filters to the collection; about the lists

FILTER LISTS by WAVELENGTH:
blueward of 4000
4000 to 4499
4500 to 4999
5000 to 5499
5500 to 5999
6000 to 6499
6500 to 6999
7000 to 7499
7500 to 7999
8000 and redward

BROADBAND FILTERS KEPT at 3-METER

FILTERS KEPT at 1-METER

TRANSMISSION TABLES for U, B, V, R, Rs, and I

TRACES:
U B V R Rs I (individual plots)
B, V, R, Rs, I(single plot)
Mt. Hamilton and Mauna Kea sky spectra and B, V, R, and I transmission

MISCELLANEOUS OTHER FILTERS and SMALL OPTICS KEPT at 3-METER