FTS Interference Filters

HTML version created by David Bohlender.

Maintained by Greg Barrick

Send comments to barrick@cfht.hawaii.edu.

If available, transmission curves can be viewed by clicking on the appropriate filter number. ASCII data is now available by clicking on data.

Set	Filter Number and ASCII Data	Central Wavelength (Å)	Bandwidth (Å)	Max. Trans. (%)	Size (mm)	Shape	Thickness (mm)	For Use With...	Location	Comments	Status	Date Received
Infrared J	5103 data	12400	2900	79	25.4	round	3.08	redeye fts	---	Redeye Wide	Good	---
Infrared J+H	5104 data	14400	9452	94	25.4	round	1.52	redeye fts	---	Redeye Wide	Good	---
Paschen Beta	5105 data	12820	150	65	25.4	round	1.53	redeye fts	---	Redeye Wide	Good	---
Infrared	5106 data	12700	450	85	25.4	round	5.08	redeye fts	---	Redeye	Good	---
Infrared	5107 data	10600	400	74	25.4	round	5.23	redeye fts	---	FTS	Good	9/1/1991
Infrared	5108 data	10600	400	75	25.4	round	5.6	redeye fts	---	FTS	Good	9/1/1991
Infrared	5109 data	10600	400	74	25.4	round	5.24	redeye fts	---	FTS	Good	9/1/1991
Infrared	5110 data	10750	2500	82	25.4	round	5.76	redeye fts	---	FTS	Good	---
Infrared	5111 data	10750	2500	81	25.4	round	5.76	redeye fts	---	FTS	Good	---
Infrared	5112 data	10720	120	81	25.4	round	4.98	redeye fts	---	FTS	Good	---
Infrared	5113 data	10720	120	81	25.4	round	5.06	redeye fts	---	FTS	Good	---
He I narrow	5114 data	10830	120	75	25.4	round	5.08	redeye fts	---	FTS	Good	---
He I narrow	5115 data	10830	120	74	25.4	round	4.92	redeye fts	---	FTS	Good	---
He I narrow	5116 data	10830	120	73	25.4	round	4.98	redeye fts	---	FTS	Good	---
He I narrow	5117 data	10830	120	75	25.4	round	4.9	redeye fts	---	FTS	Good	---
He I-1	5118 data	10810	360	68	25.4	round	5.96	redeye fts	---	FTS	Good	11/1/1988
He I-2	5119 data	10810	360	72	25.4	round	5.98	redeye fts	---	FTS	Good	11/1/1988
He I-3	5120 data	10810	360	72	25.4	round	5.92	redeye fts	---	FTS	Good	11/1/1988
He I-4	5121 data	10810	360	72	25.4	round	6	redeye fts	---	FTS	Good	11/1/1988
He I-5	5122 data	10810	360	71	25.4	round	5.94	redeye fts	---	FTS	Good	11/1/1988
CH4	5123 data	11000	300	67	25.4	round	5.94	redeye fts	---	FTS	Good	---
CH4	5124 data	11000	300	67	25.4	round	5.94	redeye fts	---	FTS	Good	---
CH4	5125 data	11000	300	68	25.4	round	5.94	redeye fts	---	FTS	Good	---
Infrared	5126 data	11800	600	88	25.4	round	5.86	redeye fts	---	FTS	Good	---
Infrared	5127 data	11800	600	88	25.4	round	5.84	redeye fts	---	FTS	Good	---
Infrared	5128 data	12700	450	85	25.4	round	3.76	redeye fts	---	FTS	Good	---
Infrared	5129	12700	450	85	25.4	round	3.76	redeye fts	---	FTS	Good	---
Infrared J	5130 data	12500	2900	78	25.4	semi-circle	1.98	fts	---	Half Filter	Good	---
Infrared J	5131 data	12500	2900	78	25.4	semi-circle	1.95	fts	---	Half Filter	Good	---
Infrared	5134 data	10720	120	81	25.4	round	4.95	redeye fts	---	FTS InGaAs	Good	---
Infrared	5135 data	10720	120	80	25.4	round	4.96	redeye fts	---	FTS InGaAs	Good	---
Pa Beta	5136 data	12820	150	62	25.4	round	1.52	redeye fts	---	Redeye Narrow	Good	---
Infrared	5141 data	13921	362	65	25.4	round	6.1	redeye fts	---	InGaAs	Good	9/1/1998
Infrared	5142 data	13935	367	65	25.4	round	6.1	redeye fts	---	InGaAs	Good	9/1/1998
Infrared H	5201 data	16500	2800	78	25.4	round	1.94	redeye fts	---	Redeye Wide	Good	---
Fe II	5202 data	16470	180	77	25.4	round	1.54	redeye fts	---	Redeye Wide	Good	---
Infrared	5203 data	15610	410	84	25.4	round	1.88	redeye fts	---	FTS	Good	---
Infrared	5204 data	15610	410	83	25.4	round	1.94	redeye fts	---	FTS	Good	---
Infrared	5205 data	15610	410	83	25.4	round	2	redeye fts	---	FTS	Good	---
Infrared H	5206 data	16400	2800	94	25.4	semi-circle	1.7	fts	---	Half Filter	Good	---
Infrared H	5207 data	16400	2800	94	25.4	semi-circle	1.68	fts	---	Half Filter	Good	---
Infrared	5208 data	19850	300	49	25.4	round	1.09	redeye fts	---	Redeye	Good	---
CO2	5216 data	16200	700	91	25.4	round	7.12	redeye fts	---	Owned by UH Red Leak	Good	11/1/1999
CO2	5217 data	16200	700	91	25.4	round	7.12	redeye fts	---	Owned by UH Red Leak	Good	11/1/1999
Infrared K	5301 data	22100	3900	70	25.4	round	1.94	redeye fts	---	Redeye Wide	Good	---
Infrared K'	5302 data	21200	3400	79	25.4	round	1.55	redeye fts	---	Redeye Wide	Good	---
H2 s(1)	5303 data	21250	240	61	25.4	round	1.04	redeye fts	---	Off Band (RN)	Good	---
Br Gamma	5304 data	21650	220	71	25.4	round	1.1	redeye fts	---	Redeye Wide	Good	---
Infrared	5305 data	20580	220	82	25.4	round	6.32	redeye fts	---	Redeye	Good	---
Infrared	5306 data	20930	220	76	25.4	round	6.32	redeye fts	---	Redeye	Good	---
Infrared	5307 data	21510	1975	89	25.4	round	1.16	redeye fts	---	Redeye	Good	---
CO	5308 data	22980	270	73	25.4	round	1	redeye fts	---	Redeye Narrow	Good	---
H+K	5309 data	20000	11586	95	25.4	round	2.14	redeye fts	---	FTS	Good	---
H+K	5310 data	20000	11646	94	25.4	round	2.1	redeye fts	---	FTS	Good	---
Infrared K(?)	5311 data	22500	3000	80	25.4	round	1.06	redeye fts	---	FTS	Good	---
Infrared K'	5312 data	21510	1960	87	25.4	round	1.14	redeye fts	---	FTS	Good	---
Infrared	5313 data	21220	1100	75	25.4	round	2.98	redeye fts	---	FTS	Good	---
Infrared	5314 data	21220	1100	76	25.4	round	2.94	redeye fts	---	FTS	Good	---
Infrared	5315 data	21220	1100	75	25.4	round	2.94	redeye fts	---	FTS	Good	---
Infrared	5317 data	21250	3000	77	25.4	round	4.16	redeye fts	---	FTS	Good	---
Infrared	5318 data	21250	3000	78	25.4	round	4.14	redeye fts	---	FTS	Good	---
Shifted K	5319 data	22960	5800	82	25.4	round	1.64	redeye fts	---	FTS	Good	---
Shifted K	5320 data	22960	5800	82	25.4	round	1.6	redeye fts	---	FTS	Good	---
Shifted K	5321 data	22960	5800	82	25.4	round	1.6	redeye fts	---	FTS	Good	---
Infrared K	5322 data	23390	5530	89	25.4	round	0.58	redeye fts	---	FTS	Good	---
Infrared	5323 data	23390	5530	89	25.4	round	0.57	redeye fts	---	FTS	Good	---
CO	5325 data	23490	970	88	25.4	round	1.08	redeye fts	---	FTS	Good	---
CO	5326 data	23490	970	87	25.4	round	1.1	redeye fts	---	FTS	Good	---
Infrared	5327 data	24600	966	86	25.4	round	1.06	redeye fts	---	FTS	Good	---
Infrared	5328 data	24600	966	87	25.4	round	1.06	redeye fts	---	FTS	Good	---
Infrared	5329 data	21820	280	56	25.4	round	1.56	redeye fts	---	Redeye	Good	---
Infrared	5330 data	20330	250	46	25.4	round	1.1	redeye fts	---	Redeye	Good	---
Infrared	5331 data	20950	150	48	25.4	round	1.08	redeye fts	---	Redeye	Good	---
Infrared	5332 data	21600	250	53	25.4	round	1.56	redeye fts	---	Redeye	Good	---
Infrared	5333 data	21430	200	56	25.4	round	1.56	redeye fts	---	Redeye	Good	---
Infrared	5334 data	21620	250	52	25.4	round	1.56	redeye fts	---	Redeye	Good	---
Infrared K'	5335 data	21200	3400	92	25.4	round	1.1	redeye fts	---	Redeye	Good	---
K continuum	5336 data	22620	530	86	25.4	round	0.94	redeye fts	---	Redeye	Good	---
Infrared	5501 data	30930	1057	84	25.4	round	1.14	fts	---	FTS	Good	---
Infrared	5502 data	30930	1057	85	25.4	round	1.14	fts	---	FTS	Good	---
Infrared	5503 data	31290	630	75	25.4	round	1.14	fts	---	FTS	Good	---
Infrared	5504 data	31290	630	74	25.4	round	1.12	fts	---	FTS	Good	---
CH4-NH3	5505	34580	1950	82	25.4	round	1.1	fts	---	FTS	Good	---
CH4-NH3	5506	34580	1950	82	25.4	round	1.1	fts	---	FTS	Good	---
Infrared	5601	35340	2720	84	25.4	round	0.95	fts	---	FTS	Good	---
Infrared	5602	35340	2720	84	25.4	round	0.98	fts	---	FTS	Good	---
Infrared	5603	37620	1610	82	25.4	round	1.07	fts	---	FTS	Good	---
Infrared	5604	37620	1610	82	25.4	round	1.04	fts	---	FTS	Good	---
Infrared	5605	38250	1910	91	25.4	round	0.58	fts	---	FTS	Good	---
Infrared	5606	38250	1910	91	25.4	round	0.56	fts	---	FTS broken	Poor	---
Infrared	5607	38270	1790	72	25.4	round	1.04	fts	---	FTS	Good	---
Infrared	5608	38270	1790	72	25.4	round	1.04	fts	---	FTS	Good	---
Infrared L'	5609	38900	6300	78	25.4	semi-circle	1.1	fts	---	Half Filter	Good	---
Infrared L'	5610	38900	6300	78	25.4	semi-circle	1.1	fts	---	Half Filter	Good	---
Infrared L' old	5611	37600	11680	82	25.4	round	2.3	fts	---	FTS	Good	---
Infrared L' old	5612	37600	11680	82	25.4	round	2.3	fts	---	FTS broken	Poor	---
Br Alpha	5701	40500	540	69	25.4	round	1.66	fts	---	FTS	Good	---
Br Alpha	5702	40500	540	69	25.4	round	1.6	fts	---	FTS	Good	---
Br Alpha	5703	40500	540	69	25.4	round	1.66	fts	---	FTS	Good	---
Br Alpha old	5704	40569	1640	80	25.4	round	0.65	fts	---	FTS	Good	---
Br Alpha old	5705	40569	1640	80	25.4	round	1.04	fts	---	FTS	Good	---
Infrared	5801	48200	1840	86	25.4	round	1.14	fts	---	FTS	Good	---
Infrared	5802	48200	1840	86	25.4	round	1.13	fts	---	FTS	Good	---
Infrared	5803	48000	---	---	25.4	round	1.1	fts	---	FTS narrow	Good	---
Infrared	5804	48000	---	---	25.4	round	1.09	fts	---	FTS narrow	Good	---
Infrared	5805	47300	8600	75	25.4	round	1	fts	---	FTS	Good	---
Infrared	5806	47300	8600	75	25.4	round	0.95	fts	---	FTS	Good	---
Infrared	5901	52600	3320	80	25.4	round	0.54	fts	---	FTS	Good	---
Infrared	5902	52600	3320	80	25.4	round	0.54	fts	---	FTS	Good	---