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or 12 months interest free
or 4 easy payments of $81.24
or 4 easy payments of $81.24
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Delivery estimates
Once your order has been picked up by the courier please allow 2 working days for North
Island addresses, for the South Island allow 3 working days. Rural deliveries and
extra-large items may take several additional days.
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Delivery of oversize items
Oversize items such as very large telescopes may only be available via pickup from a depot or delivered to a
business address. For more infomation
click here. Due to
less frequent collection of oversize items delivery may take 2 to 4 additional days.
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About this product
The 1-1/4" OIII narrowband filter isolates just the two doubly-ionized oxygen lines (496 and 501nm lines) emitted by planetary and emission nebulae, while blocking the rest of the overall spectrum of light
The 1-1/4" OIII narrowband filter isolates just the two doubly-ionized oxygen lines (496 and 501nm lines) emitted by planetary and emission nebulae, while blocking the rest of the overall spectrum of light. The result is extreme contrast between the black sky background and the faint photons of OIII light needed for detailed views of the Veil, Ring, Dumbbell, Crescent and Orion nebulae, among other objects.
Each filter has an ultra hard, vacuum-deposited coating carefully designed to block all of the visual spectrum ranging from 400 to 700nm This eliminates the un-natural colored halos surrounding bright stars common with O III filters of less sophisticated coating technology.