Condition: USED (All books are in used condition) This item may be available in a different size, colour, scent, version or platform:
Condition - Very Good The item shows wear from consistent use, but it remains in good condition and functions properly. Item may arrive with damaged packaging or be repackaged. It may be marked, have identifying markings on it, or have minor cosmetic damage. It may also be missing some parts/accessories or bundled items.
Celestron 93624 Narrowband Oxygen III 2 Filter
The 2" OIII narrowband filter isolates the two doubly-ionized oxygen lines (496 and 501 nm lines)