Celestron Origin Nebula Filter - 93669 Tele Vue Eyeguard Extender there is no need to

there is no need to add a field flattener to this system

EQ Head Weight w/o Counterweight Shaft:  47lb

you can buy the base separately

this camera features lower readout noise

The holder is precisely machined to fit your eyepieces with a minimum of slop

Celestron Origin Nebula Filter - 93669 Tele Vue Eyeguard Extender there is no need toNebula Filter & Holder for Origin Telescopes! Take advantage of the innovative filter holder built into the design of the Celestron Origin Nebula Filter and experience better contrast when viewing emission nebula like the Orion Nebula, the Lagoon Nebula and dozens more, especially in areas with light pollution! This specialized filter blocks 0. 5% of wavelengths that cause light pollution while allowing H Alpha (656nm), H Beta (486nm) and Oxygen III