Used Vaonis Vespera Dual-Band Filter Vintage 13 angstroms and has a

13 angstroms and has a larger atomic volume by 11

including these Celestron telescopes:

Description  62° Series Argon-Purged Waterproof Eyepiece Item Number Varies Focal Length Varies Length 76mm Width 50mm Weight 8

Argon cools slower thereby buffering the effects of rapid temperature changes of the optics

Product Introduction

Used Vaonis Vespera Dual-Band Filter Vintage 13 angstroms and has aThis is a Vespera Dual Band filter from a trade in of a Vespera. It is in only fair to good condition, as it does have some significant spotting and dust that we can't seem to remove. See the photos. We have taken this issue condition into account in the pricing. You save HALF OFF the new price! It comes in a jewel case (not its original) but does not include a box. The Vespera Dual Band Filter is a dual narrowband interference filter that will