Merge pull request #56 from andre-stefanov/guide

Added improved guide scope files to Addons

Author: Fabian

Addons/Guide/CAD/oat_guide_scope.f3z

@@ -0,0 +1,26 @@
+# Guide scope
+
+This is an improved version of the already great OpenAstroGuider which mounts to the new aluminium base. 
+
+## Whats new:
+
+- Added thread between front and mid part to simplify focusing and make it more precise
+- Lens hood holds the lens now (instead of friction only which was dependant on 3d printer tolerances and other factors)
+- Made new 20x20 extrusion holders which can be mounted without the need to disassembly the main camera mount
+- More precise guide camera sensor mounting improves polar alignment and guiding
+- Camera sensor mounted without screws now
+- Supporting many different camera modules as long as they have have same screw holes
+- Reduced overall required screws amount
+- multiple further small improvements
+
+## What you'll need:
+- Achromatic lens with 50mm diameter and 182,8 focal lenght
+- Camera sensor performing well in low light (e.g. AR0130 or IMX290). Monochrome sensor recommended.
+- 2 x M4x8 screws
+- 2 x M4 t-nuts
+- 4 x M3x12 screws
+- 2 x M3 hex nuts
+
+## Printing
+
+Printed at with 0.15 layer height and 4 perimeters. Dark filaments improve signal to noise ratio by preventing light from the side (e.g. laptop) to hit the sensor.

Addons/Guide/CAD/oat_guide_scope.step

@@ -10,3 +10,5 @@ A motorization of the azimuth and altitude of the mount to help automate polar a
 ### Digital Level
 A gyro/accelerometer to replace the bubble level. There is an additional holder that can also hold the GPS module. Additionally there is another arm that holds the GPS antenna and the Altitude driver board.
 
+### Guide
+An improved version of the OpenAstroGuide which allows more precise focusing, correct camera alignment, different lenses and more.