Flange:
Low Profile 2" SCT thread Low Profile 3 1/4" Meade thread Low Profile 3 1/4" Celestron thread Low Profile 4" Meade 16" thread Extra deep 2" SCT thread Reg Profile 3 1/4" Meade thread Reg Profile 3 1/4" Celestron thread Focal Reducer 3 1/4" Meade thread Focal Reducer 3 1/4" Celestron thread Focal Reducer 4" Meade 16" thread Focal Reducer 2" SCT thread Vixen flange Questar flange TAK Mewlon 300 flange TAK Mewlon 180,210,250,cn212 flange Astrotech RC flange

Drawtube:
.75" travel single thumbscrew .85" travel Brass comp ring .90" travel low pos Brass comp ring .95" travel focal reducer brass comp ring 1.15" travel brass comp ring 1.15" travel AP focal reducer comp ring 1.5" travel brass comp ring

Color:
MoonLite Red Black Gold Blue Violet Green

Knob/Motor:
1.5" knob single speed 1.5" tri-knob ( add $100 ) 1.5" tri-knob w/ Shaft lock ( add $125 ) DC motor w/ Rigel hand controller ( add $150 ) High Res Stepper motor ( add $190 ) High Res Stepper Motor w/MoonLite Mini Controller ( add $385 ) High Res Stepper Motor w/MoonLite Display Controller ( add $685 )