Telescope Bracket and EAF for Askar FMA180 / TPO 180 Ultrawide

Designed for the TPO 180 Ultrawide telescope, which is also called the Askar FMA180. It won't work with the new Pro version.

Clamps around the reducer and the right position is at the back of that section. This give you more room for a filter drawer. It is the right height for a DSLR to sit flat on a dovetail plate.

Helical gears that are extra long to deal with the fact the focuser ring moves forward and back. Smooth and quiet operation.

2020 mounting tabs at the top to hold a guide camera, computer, or other accessories. I'm using the OpenAstroGuider

Instructions:

Print Ring_Gear_Test_Fitment at 100%, 100.5%, 101%, and 99.5% scale and test fit on the focuser ring to find which is a light press fit for your filament and printer. Then you can print all the parts at that scale.

Tested with ASA and HTPLA+. You can use something else, but keep in mind if you will leave it out in the sun or in a hot car that normal PLA may warp, and ABS can be damaged by UV.

Print with a lot of perimeters and around 40% infill for stiff parts. The M3 inserts go in the pinion gear and the bottom of the clamp base. The M6 inserts install from the inside of the clamp base.

BOM:

1x NEMA 14 Stepper Motor with 5mm Shaft 14HS10-0404S or similar

5x M3 x 5mm OD x 4mm Lg Heat Inserts

2x M3 x 20mm Long Socket Cap Head Bolts

2x M3 x 30mm Long Socket Cap Head Bolts

5x M3 x 10mm Long Button Head Bolts

8x M3 Washers

4x M5 x 10mm Long Button Head Bolts

4x M5 2020 Hammer Nuts

2x M6 x 16mm Long Bolts

2x M6 x OD 8.7mm x 10mm Long Heat Inserts

1x 2020 220mm Long or Longer Aluminum Extrusion