Narrow and Medium-band Filters
blueward of 4000 Angstroms,
kept at the 3-meter

Central Wavelength	FWHM	Notes	Measured Wavelength/Widthd
3300	1150	Plot, Table, Red leak starting about 7000A. Very thin filter.
3380	55	Plot, Tablec	3387/54
3380	30	Plot, Tablec, labeled HES 1151, 2-inch round filter. Smearing/corrosion on both sides.	3391/36
3440	90	Plot, Tablec	3453/105
3500	50	Plot, Tablea	3502/48
3500	800	Plot, Table, Red leak starting about 7000A. Very thin filter.
3600	600	Plot, Table, Red leak starting about 7000A. Thin filter.
3650	80	Plot,Tablea, 1.5-inch round filter	3715/66
3650	20	Plot,Tablea, labeled HES 1215, 1.5-inch round filter	3656/24
3662	70	Plot,Tablea, periphery degrading, central 1 inch ok.	3666/77
3690	30	Plot,Tablea, labeled HES 0458, 2-inch round filter, periphery degrading, central 1-inch ok.	3694/33
3700	100	Plot,Tablea, deterioration on periphery, central 1.5 inches ok.	3715/97
3734	60	Plot,Tablea	3740/66
3750	80	Plot,Tablea	3761/77
3804	65	Plot,Tablea, crack in one corner on mirrored side.	3810/62
3825	300	Plot, Tablec, clouded at edges, only central 1 cm ok	3876/280
3870	30	Plot,Tableb, degraded, wavelength shifted significantly redwards	3912/50
3870	60	Plot,Tablea, periphery deteriorating, central 1.5 cm ok	3878/71
3871	50	Plot,Tableb, 1.5-inch round filter.	3922/44
3875	62	Plot,Tableb	3884/61
3953	60	Plot,Tableb, periphery deteriorating	3964/65
3972	60	Plot,Tablea, periphery deteriorating	3983/59

NEXT (4000-4499)

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