Used Vaonis Vespera Dual-Band Filter Vintage Argon cools slower thereby buffering

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

The balanced transmission allows color photographs to be taken with minimal color cast to broadband emission objects such as stars

then Celestron’s X-Cel offers the unique features you are looking for

Increases the contrast between the sky background and the stellar object

75") Weight 2

Used Vaonis Vespera Dual-Band Filter Vintage Argon cools slower thereby bufferingThis 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