Pay in 4 interest-free payments of $57.50 Learn more
Ships within 48 hours · Estimated delivery Aug 23 - Aug 28
and dusky details on Neptune and Uranus
because a longer tube costs money to ship
and an autocollimator refines it further
These two factors combine to provide you with the highest contrast available
and your own custom hardware all attach to the FDA
CXB (formerly Astrodon) 5nm Narrowband SII Filter (Sulfur II) FarSight and dusky details on NeptuneNotice: As of 9 23 2025 New production has been started. We have had some filter yeild from the intial testing runs and those filter are available for purchase now. Please monitor our website for upcoming notices of availability dates and the ability to place pre orders. Status of the filter sizes are as follows: SII 5nm 1. 25" mounted release date TBD (check back soon) SII 5nm 36mm round unmounted release date TBD (check back soon) SII 5nm 50mm round
US$ 16.00
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