Mount Hamilton Filter List

Narrow and Medium-band Filters
from 6500 to 6999 Angstroms,
kept at the 3-meter

Central
Wavelength
FWHMNotesMeasured
Wavelength/Widthd
6500400Borrowed in 1997 by Chris Simpson & Dan Stern. Never returned.
6500700Thuan-Gunn r, Plot,Tablea, 2-inch round filter.6508/368
6518359Borrowed. Never Returned. Borrower unknown.
652075Plot,Tablea6523/67
656345Plot,Tablea
2 available
At least one w/periphreral clouding (central 1-inch ok). Marks from circular spring clip on mirrored side.
6587/48
656375Plot,Tablea6565/70
6563100Plot,Tablea, 2-inch round filter.6569/95
656715Plot,Tablea, 2-inch round filter. Very thick.6566/15
657070Plot,Tablea7142/46
658815Plot, Tablec, 2-inch round filter. Very thick.6579/28
660675Plot,Tablea6608/74
664976Plot,Tablea6653/64
668550Plot,Tableb6696/65
669376Plot,Tablea6695/72
6710100Plot,Tablea6691/115
672530Plot,Tablea6723/31
673776Plot,Tablea6729/69
6750500Plot,Tablea6781/486
678178Plot,Tablea, cracks in one corner of red side.6787/77
682678Plot,Tablea6830/68
687178Plot,Tablea, smudge on mirrored side.6870/66
689090Plot,Tablea, 1.5-inch round filter.6841/83
691678Plot,Tablea6917/74
696179Plot,Tablea6963/64

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aMeasured by M. Clendenin, 2012.
bMeasured by E. Gates, 2012.
cMeasured by B. Dupraw, 2012.
dGaussian fit to 2012 plot.