Narrow- and medium-band filters, 6500 to 6999 A

Mount Hamilton Filter List

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

Central
Wavelength FWHM Notes Measured
Wavelength/Width^d

6500 400 Borrowed in 1997 by Chris Simpson & Dan Stern. Never returned.

6500 700 Thuan-Gunn r, Plot,Table^a, 2-inch round filter. 6508/368

6518 359 Borrowed. Never Returned. Borrower unknown.

6520 75 Plot,Table^a 6523/67

6563 45 Plot,Table^a
2 available
At least one w/periphreral clouding (central 1-inch ok). Marks from circular spring clip on mirrored side. 6587/48

6563 75 Plot,Table^a 6565/70

6563 100 Plot,Table^a, 2-inch round filter. 6569/95

6567 15 Plot,Table^a, 2-inch round filter. Very thick. 6566/15

6570 70 Plot,Table^a 7142/46

6588 15 Plot, Table^c, 2-inch round filter. Very thick. 6579/28

6606 75 Plot,Table^a 6608/74

6649 76 Plot,Table^a 6653/64

6685 50 Plot,Table^b 6696/65

6693 76 Plot,Table^a 6695/72

6710 100 Plot,Table^a 6691/115

6725 30 Plot,Table^a 6723/31

6737 76 Plot,Table^a 6729/69

6750 500 Plot,Table^a 6781/486

6781 78 Plot,Table^a, cracks in one corner of red side. 6787/77

6826 78 Plot,Table^a 6830/68

6871 78 Plot,Table^a, smudge on mirrored side. 6870/66

6890 90 Plot,Table^a, 1.5-inch round filter. 6841/83

6916 78 Plot,Table^a 6917/74

6961 79 Plot,Table^a 6963/64

Central Wavelength	FWHM	Notes	Measured Wavelength/Width^d
6500	400	Borrowed in 1997 by Chris Simpson & Dan Stern. Never returned.
6500	700	Thuan-Gunn r, Plot,Table^a, 2-inch round filter.	6508/368
6518	359	Borrowed. Never Returned. Borrower unknown.
6520	75	Plot,Table^a	6523/67
6563	45	Plot,Table^a 2 available At least one w/periphreral clouding (central 1-inch ok). Marks from circular spring clip on mirrored side.	6587/48
6563	75	Plot,Table^a	6565/70
6563	100	Plot,Table^a, 2-inch round filter.	6569/95
6567	15	Plot,Table^a, 2-inch round filter. Very thick.	6566/15
6570	70	Plot,Table^a	7142/46
6588	15	Plot, Table^c, 2-inch round filter. Very thick.	6579/28
6606	75	Plot,Table^a	6608/74
6649	76	Plot,Table^a	6653/64
6685	50	Plot,Table^b	6696/65
6693	76	Plot,Table^a	6695/72
6710	100	Plot,Table^a	6691/115
6725	30	Plot,Table^a	6723/31
6737	76	Plot,Table^a	6729/69
6750	500	Plot,Table^a	6781/486
6781	78	Plot,Table^a, cracks in one corner of red side.	6787/77
6826	78	Plot,Table^a	6830/68
6871	78	Plot,Table^a, smudge on mirrored side.	6870/66
6890	90	Plot,Table^a, 1.5-inch round filter.	6841/83
6916	78	Plot,Table^a	6917/74
6961	79	Plot,Table^a	6963/64

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