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OpenAstroExplorer

OAE

3D view

v0.2 released now! Test release, please only build this if you know what you're doing and you want to help the development! There will still be major changes to the parts. This is NOT a finished design!

The ALT AZ adjustment is still missing in the current design.

There is no official electronics yet, you will have to figure out how to drive the NEMA17s.

There is no assembly guide! You will have to refer to the posted CAD files and assemblies and figure it out for yourself. You can import the .STEP file into Fusion360.

There is currently no build in way to PA OAE. You can use Sharpcap for example, if you have a guider, or just roughly align it for widefield photography. A more precise way is in development.


Needed Hardware:

  • This specific Clamp & Plate for attachment to a tripod
  • 90N Clamp for attaching the scope
  • 1x 2020 extrusion 200mm
  • 1x 4040 extrusion 75mm. Get a double slot one, such as this
  • 2x NEMA17: Max. Body Length 48mm, Max. Shaft Length 24mm
  • 4x GT2 pulley, 16T, 5mm shaft, 6mm belt
  • 2x GT2 pulley, 48T, 5mm shaft, 6mm belt
  • 1x 5mm Shaft, 40mm
  • 1x 5mm Shaft, 50mm
  • 1x 5mm Shaft, 60mm
  • 6x 625 ZZ bearings
  • 4x F695 bearings
  • 2x 6907 bearings
  • 2x 6012 ZZ bearing (Can also be 2RS if cheaper)
  • Worm gear set 50T bore 5

Screws and Nuts: Exact amount of screws might not be accurate! All DIN912 / ISO 4762 Hex Socket unless specified

  • 6x M5x80 mm
  • ~15 M4x12 mm
  • ~20 M3x12 mm
  • 4x M3x20mm
  • 2x M3x25mm
  • 4x M3x25mm

ISO 7380 -1:

  • 8x M3x8 mm buttonhead
  • 3x M5x20 mm buttonhead

Thumbscrews (Can be replaced with normal Hex Screws)

  • 2x M3x12 mm
  • 1x M3x16 mm
  • 1x M3x20 mm

Hex Nuts:

  • 1x M3

  • 8x M5

  • ~40 M3x4.6x6 heat inserts

  • 2x M4x6x5 heat inserts

  • 6x Shim, 1mm thick, 5x10, DIN988

  • 6x Neodymium Magnets, round, 8x2mm

  • ~80cm GT2 belt, 6mm

  • 2x closed GT2 belt, 6mm, 142mm/71 Teeth

  • 1x closed GT2 belt, 6mm, 192mm/96 Teeth


Creative Commons Licence
OpenAstroExplorer © 2023 by OpenAstroTech is licenced under CC BY-NC 4.0.

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