Flange:
AR5 AR6 Borg Burgess 127 Celestron 80ED Celestron ED100 EON / Equinox / Sky Watcher Meade 80 ED APO Orion 90mm Sky View Orion 102 ED Stellervue 80 and 102 ED Stellarvue SV80/9D Synta standard format Synta small format TAK FS-78 Tele Vue Female threaded flange Tele Vue Male threaded flange TeleVue Genesis Pre-SDF TeleVue Genesis SDF Vixen 3-bolt Vixen Threaded William Optics 66 / AT66 William Optics 80/90mm Megrez / ZenithStar William Optics 105mm

Drawtube:
4.5" travel ( Standard ) 4.5" travel Brass comp ring 2.5" travel Brass comp ring 4.5" travel "low position" comp ring 2.5" travel "low position" comp ring

Color:
MoonLite Red ( Standard ) Black Blue Green Violet Gold

Knob/Motor:
1.5" knob Single Rate ( Standard ) 1.5" Dual Rate Tri-knob ( add $100 ) 1.5" Dual Rate Tri-knob w/Shaft Lock ( add $125 ) DC Motor with Rigel hand controller ( add $150 ) High Res Stepper Motor- Stand Alone ( add $190 ) High Res Stepper Motor w/ MoonLite Mini Controller ( add $385 ) High Res Stepper Motor w/ MoonLite Display Controller ( add $685 )