滤光片 |
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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
Filter Specifications |
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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 |
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U |
B |
V |
R |
I |
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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 |
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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 |
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U |
B |
V |
R |
I |
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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. |
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3-channel nebula filter: |
Nebula-NB-31 |
Nebula-NB-50 |
O-III nebula filter: |
Oxygen-III-31 |
Oxygen-III-50 |
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