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- Used Machinery Parts[26]
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Contact Us
- Contact Person : Mr. Kong Tony
- Company Name : Kunming Yulong Optical & Electronics Technology Co., Ltd.
- Tel : 86-871-8317717
- Fax : 86-871-8317850
- Address : Yunnan,Kunming,1418 Haiyuan Middle Road,High Tech. Development Kunming City, P.R. China
- Country/Region : China
- Zip : 650106
Light Pollution Reduction optical filters
Product Detailed
Related Categories:Used Machinery Parts
Detailed Product Description
Introduction | The broad-band "Light Pollution Reduction optical filters" are designed to improve the visibility of a variety of Deep-Sky objects by blocking out the common Mercury vapor, Sodium, and some other emission lines from man-made or natural sources which contribute to light pollution, while letting through a broad range of other more useful wavelengths. Deep-Sky Filter. |
Substrate | B270 or Other Glass |
Round type size | Φ25~ Φ 78 mm |
Thickness | 1~ 4 mm |
Surface Quality | 40/20,60/40 |
Wavelenth | Transmission |
400~450nm | Tave<1% |
470~510nm | Tave>90% |
550~610nm | Taverage <1% |
650~700nm | T>90% |
