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Part Number: 20197Manufacturer: Optical Vision
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PLEASE EMAIL US AND WE WILL GET BACK TO YOU WITH AN EXPECTED DELIVERY DATE ON ANY OF THE PRODUCTS EVEN IF IT IS MARKED OUT OF STOCK.
We will come back to you as soon as we check with the warehouse (During working hours), or call us on 01483 756601
PLEASE NOTE THAT EXPECTED DELIVERY DATE DOES NOT MEAN THAT SOCK WILL BE AVAILABLE. IT MAY HAVE ALREADY SOLD OUT BEFORE ARRIVAL SO PRE-ORDERING IS ADVISED.
The narrowband UHC filter, like the O-III filter, isolates the two doubly ionized oxygen lines (496 and 501nm) in addition to the hydrogen-beta line (486nm) emitted by planetary and most emission nebulae. This filter permits superb views of objects like the Orion, Lagoon, Swan and other extended nebulae. It performs well in smaller aperture instruments owing to its greater light transmission than the O-III, yet still suppresses light pollution well. The UHC filter is the best all-around dark-sky nebula filter. threaded to fit standard 2” astronomical eyepieces. Supplied with storage case.
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