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Transmission Gratings |
These gratings are available with four different numbers of lines per mm.
Each is protected by two glass plates 65 x 50mm bound together at the edges with a viewing area of 45 x 30mm.
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- Tuesday, November 10, 2009 Excellent value Reviewed By: Richard (Attica, NY) For the price, these gratings are an excellent value. These are Paton Hawksley gratings. Tests show the 100 l/mm grating is very similar to the Paton Hawksley astronomy grating, the Star Analyser. Both the 100 and 200 l/mm grating are nicely blazed to have good light efficiency in the 1st order. These gratings are an excellent value!
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