Narrow and Medium-band Filters
from 4000 to 4499 Angstroms,
kept at the 3-meter
|4000||400||Thuan-Gunn V, Plot, Tablea||4033/339|
|4000||650||Plot, Table, Red leak starting about 7000A.Tape used as spacer between glass layers.|
|4023||25||Plot, Tablec; Labeled HED 7957, 2-inch round filter, very thick, doesn't fit in Kast filter wheel with standard filter holder.||4031/31|
|4043||60||Plot, Tableb, periphery degraded, central 1.5 cm ok.||4058/60|
|4060||70||Plot, Tableb, 1.5-inch round filter.||4103/72|
|4100||100||Plot, Tableb, 2-inch round filter.||4098/89|
|4217||17||Plot, Tablec; labeled HED 0836 1847, 2-inch round, very thick, doesn't fit in Kast filter wheel with standard holder.||4225/27|
|4220||60||Plot, Tableb, very thick.||4222/58|
|4260||30||Plot, Tableb, degraded filter, wavelength redder than orginal specs.||4272/40|
|4260||80||Plot, Tableb, 1.5-inch round filter. Degraded coatings, wavelength redder than original specs.||4276/82|
|4265||65||Plot, Tableb, periphery degraded, central 2 cm ok.||4266/64|
|4300||60||Plot, Tableb, periphery degraded, central 3 cm ok.||4314/57|
|4360||45||Plot, Tableb, very thick. Periphery degraded, only central 1 cm ok.||4374/45|
|4380||20||Plot, Tableb, Labeled ?old?, 2-inch round filter. Periphery degraded, only central 1 cm ok.||4391/17|
|4380||20||Plot, Tablec,Labeled HES 2348, 2-inch round filter, very thick. Won't fit in Kast filter wheel with standard holder.||4390/29|
PREVIOUS (blueward of 4000)
a Measured by M. Clendenin, 2012.
b Measured by E. Gates, 2012.
c Measured by B. Dupraw, 2012.
d Gaussian fit to 2012 plot.