天文光学滤光片

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天文光学滤光片

天文光学滤光片

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Johnson/Bessel Type 天文滤光片

Filter Specifications
Filter Type	Nominal CWL	Nominal FWHM	Nominal Transmission
U	365nm	60nm	> 50%
B	440nm	100nm	> 55%
V	550nm	90nm	> 70%
R	630nm	120nm	> 70%
I	900nm	300nm	> 70%

Part Numbers
	U	B	V	R	I
25mm dia.	JOHN-U-25	JOHN-B-25	JOHN-V-25	JOHN-R-25	JOHN-I-25
50mm dia.	JOHN-U-50	JOHN-B-50	JOHN-V-50	JOHN-R-50	JOHN-I-50
50 x 50mm sq.	JOHN-U-50S	JOHN-B-50S	JOHN-V-50S	JOHN-R-50S	JOHN-I-50S
31mm dia. mounted	JOHN-U-31M	JOHN-B-31M	JOHN-V-31M	JOHN-R-31M	JOHN-I-31M
50mm dia. mounted	JOHN-U-50M	JOHN-B-50M	JOHN-V-50M	JOHN-R-50M	JOHN-I-50M

Kron/Cousins Type 天文滤光片

Filter Specifications
Filter Type	Nominal CWL	Nominal FWHM	Nominal Transmission
U	365nm	60nm	> 50%
B	440nm	100nm	> 55%
V	550nm	90nm	> 70%
R	760nm	250nm	> 70%
I	800nm	150nm	> 70%

Part Numbers
	U	B	V	R	I
25mm dia.	KRON-U-25	KRON-B-25	KRON-V-25	KRON-R-25	KRON-I-25
50mm dia.	KRON-U-50	KRON-B-50	KRON-V-50	KRON-R-50	KRON-I-50
50 x 50mm sq.	KRON-U-50S	KRON-B-50S	KRON-V-50S	KRON-R-50S	KRON-I-50S
31mm dia. mounted	KRON-U-31M	KRON-B-31M	KRON-V-31M	KRON-R-31M	KRON-I-31M
50mm dia. mounted	KRON-U-50M	KRON-B-50M	KRON-V-50M	KRON-R-50M	KRON-I-50M

Nebula 天文滤光片

	31mm dia.	50mm dia.
3-channel nebula filter:	Nebula-NB-31	Nebula-NB-50
O-III nebula filter:	Oxygen-III-31	Oxygen-III-50

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