- Product Details
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Quick Details
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Place of Origin:
-
Yunnan, China
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Filter Type:
-
Moon Filter
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Filter Size:
-
1.25in;2in
-
Transmittance:
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> 95% of the common
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Manufacture:
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Double sided polishing
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Special:
-
Laser Inscription LOGO, ultra-thin frame
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Edge Treatment:
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Mounted in Black Anodized Aluminum Ring
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Coating:
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IAD Hard Film
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Feature:
-
Anti Light Pollution
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Surface Quality:
-
40/20
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Tolerance:
-
± 0.10mm
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Certification:
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ISO9001,RoHs,EPR
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Shipment:
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Express delivery,Air,Sea
Quick Details
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Caliber:
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31-82mm
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Brand Name:
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Optolong
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Model Number:
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Moon & Skyglow
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Place of Origin:
-
Yunnan, China
-
Filter Type:
-
Moon Filter
-
Filter Size:
-
1.25in;2in
-
Transmittance:
-
> 95% of the common
-
Manufacture:
-
Double sided polishing
-
Special:
-
Laser Inscription LOGO, ultra-thin frame
-
Edge Treatment:
-
Mounted in Black Anodized Aluminum Ring
-
Coating:
-
IAD Hard Film
-
Feature:
-
Anti Light Pollution
-
Surface Quality:
-
40/20
-
Tolerance:
-
± 0.10mm
-
Certification:
-
ISO9001,RoHs,EPR
-
Shipment:
-
Express delivery,Air,Sea
Product Description
Brief Introcuction of Astronomical Filter Moon&Skyglow
Optolong
Moon & Skyglow filter is
designed to darken the background sky by blocking light transmission from skyglow 589nm and many street light emissions from artificial light. Its high efficiency preserves image brightness, reveals more details and increases contrast of moon, galaxies, nebulae and globular star clusters.
Specification
|
Substrates
|
Optical imaging glass
|
|
CWL
|
400 - 600nm;610 - 670nm
|
|
Surface Quality
|
60-40
|
|
Transmittance
|
T＞85%
|
|
Blocking range
|
350-1050 nm
|
|
Blcoking depth
|
light pollution line blocking >99%
|
|
Size
|
1.25" ; 2"
|
|
Technical Data1
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Multi-layers anti-reflection coating;Non-cementing optical substrate coating
|
|
Technical Data2
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Fine-optically polished to ensure accurate 1/4 wavefront and < 30 seconds parallelism over the both surfaces.
|
|
Technical Data3
|
Planetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and
Optical density of off-band. |
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