Celestron Oxygen III Narrowband Filter 1.25" (93623) Bino planetarium apps like Celestron’s SkyPortal

planetarium apps like Celestron’s SkyPortal can drain your smartphone’s battery

You may also opt to use an external 12V DC power source which plugs into the motor’s power jack

This accessory makes it possible to maximize your views through your telescope with your standard 2” diagonal

Please Note: Finderscope rings (F50FB) and accessory shoe mounting bracket extra - either FURB or FURB-SCT

Due to the design

Celestron Oxygen III Narrowband Filter 1.25" (93623) Bino planetarium apps like Celestron’s SkyPortalThe 1. 25" 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. 25" 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