Mount Hamilton Filter List

Broad-Band Filters Kept at the 3-meter

NameThickness / NotesBandpass
U.150 liquid CuSO4 + UG2 trace
Ucrystal CuSO4 + 2mmUG2-
BBessell* see table
VBessell* see table
RBessell* see table
IBessell* see table
CuSO4.150", liquid trace
CuSO4.250", liquid trace
UG52mm (2)see Schott book
B-3502mm-
B-3802mm, round-
BG31mmsee Schott book
BG141mmsee Schott book
BG142mmsee Schott book
GG385-see Schott book
KV4183mm-
KV4703mm-
GG4952mm (2)see Schott book
OG4 (?)2mm-
OG515 (?)2mmsee Schott book
OG530 (?)2mmsee Schott book
OG5502mmsee Schott book
KV5503mm-
RG7152mmsee Schott book
RG8502mm (2)-
RG10002mm-
RsSpinrad night sky see table
KG12mmsee Schott book
KG22mmsee Schott book
NG 42mm
transmission @ 6500A ~ .08
-
NG 32mm
transmission @ 6500A ~ .01
-
NG 92mm
transmission @ 6500A ~ .004
-
NG 102mm
transmission @ 6500A ~ .00005
-

*Bessell, M.S. PASP 1990, 102, 1181.
These are Johnson-Cousins system for CCD's.