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Andover UBVRI 天文滤光片/Nebula 天文滤光片


Johnson/Bessel Type 天文滤光片

 

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

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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