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25MM X 20MM IR & 5892A MTD FILTER/BEAMSPLITTER/MIRROR

$8.00 USD
Product Code: L3497
Availability: In Stock

Documentation indicates the filter is for the Na I line at 5892A and Infra Red. Clearly precision made pieces and originally very expensive. As you look through and tilt the assembly you see different colors. Filter is 21mm by 17mm. Mounting is 26mm by 20mm. A great item for experiments

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