You can now buy the kits and parts at OG star tech.
Meet OG Star tracker - The ultimate diy star tracker
DIY – Build Your Own Tracker !
So, you want to build your own tracker. Then you are at the right place. OG star tracker is a perfect tracker and project for beginners and experienced astrophotographers. Combining ease of use with high precision while being open source.
Key Features:
- Lightweight & Portable: Weighs just 1.4 kg
- High Accuracy: Periodic error of just 10″–15″, allowing long exposures without an auto guider.
- Modular & Customizable: Swap between a laser and polar scope, add a ball head, or even upgrade with a manual declination axis.
- Easy Polar Alignment: Simply aim the laser at Polaris—no need for a polar scope.
- Advanced Camera Control: Built-in intervalometer port with dithering support for noise reduction.
- Upgradable: Soon a manual go-to upgrade will be released.
- Open and free to share modify and make.
You can now buy the kits and parts at OG star tech.
Shot on OG star tracker
30s exposures 2.5h of exposure time.
Join our comunity
Discord : https://discord.gg/dyFKm79gKJ
QQ: QQ交流群
Built instruction
Github : https://github.com/OndraGejdos/OG-star-tracker-
List of parts : https://docs.google.com/spreadsheets/d/1V04zjGSebJ5LQbSmzs-h86T6Z9E3HwVkMj2nuVYQzYs/edit?usp=sharing
My website : http://www.ogstartech.com
List of parts for 3d printing : https://docs.google.com/spreadsheets/d/1WuAHm6aZfxG0zdhcmhc4xp2cmE2E53lkToNg1eQ2wvI/edit?usp=sharinghttps://docs.google.com/spreadsheets/d/1WuAHm6aZfxG0zdhcmhc4xp2cmE2E53lkToNg1eQ2wvI/edit?usp=sharing
Assembly guides:
Printing instructions
Recomended print settings
All parts are printed with 100% infill except a few parts.
Print from cheaper abs/asa material:
Main gearbox , Gearbox part 1 bearing holder, Tightener, Big pulley, Camera holder, middle holder, belt cover, tightener, tightener bottom, bearing holder, bearing holder cover, bottom bearing holder, M5 knob big, Laser holder 14mm, tightener for polar scope laser, polar scope holder eq5, middle holder bottom, stationary part with 3 8 threaded insert, m5 knob 2x, m5 small knob 2x
Multicolor prints:
Main gearbox - 2x 3 white dots for tensioning, logo, bottom text
arc left - white numbers of latitude, print lying on bed
arc right - white numbers of latitude, print lying on bed
(The engravings are very shallow)
turn on ironing on top layers on these models:
Middle holder bottom
Stationary part (Use 4 walls)
Use better material abs-gf/asa-cf
Main top part, Main bottom part, Arc left, Arc right
Special printing parameters:
Main pulley - use random z seam and scarf joint seam
Stationary part (Use 4 walls)
Parts that you can print with 50% infill
Middle holder bottom, Stationary part (use 4 walls) , M5 knob, M5 knob big, Side M3 knob
You can select files which you need to 3d print here : https://docs.google.com/spreadsheets/d/1WuAHm6aZfxG0zdhcmhc4xp2cmE2E53lkToNg1eQ2wvI/edit?usp=sharinghttps://docs.google.com/spreadsheets/d/1WuAHm6aZfxG0zdhcmhc4xp2cmE2E53lkToNg1eQ2wvI/edit?usp=sharing
For heavy duty version
Use allways 100% infill
Firmware
You need to chose firmware based on your stepper motor. If you have stepper motor which has 400 steps per revolution chose : firmware simple for Arduino nano 0.9° . If you have 200 step per rotation stepper motor use : firmware simple for Arduino nano 1.8° . If you want to use different Arduino you might want to change out pins in code.
https://github.com/OndraGejdos/OG-star-tracker-/tree/main/Firmware
Or you can use our newly developed pcb to unlock more features.
https://github.com/OG-star-tech/OG-star-tracker-/tree/main/esp32_wireless_control/firmware
Usage
In the attachment is an instruction manual.
Let me introduce you to OG star tracker V2
Specifications:
- Weight: 1.4 kg
- Max Payload: 4 kg /6kg for heavy duty version
- Max Focal Length: 400 mm
- Control: Via app or phone web app
- Power: 5V 1A power bank
- Stepper Motor: High-accuracy 0.9° stepper motor with TMC2209 driver
- Build Material: ABS-GF and ABS
- Dimensions: 17.5 × 19 × 11.5 cm
Legacy version here : https://www.printables.com/model/1462536-og-star-tracker-legacy-versionhttps://www.printables.com/model/1462536-og-star-tracker-legacy-version
OG star tracker V2
by Ondrag s · original on Printables ↗
Learning / Physics & Astronomy
♥ 1.1k⬇ 6.9k🖨 20 prints
Print profiles
Arcs for HD.stl
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middle part HD.stl
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stationary part HD.stl
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main bottom part HD.stl
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Tightener bottom.stl
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Bottom bearing holder.stl
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Bearing holder cover.stl
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Rod holder.stl
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Bearing holder.stl
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M5 knob small.stl
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M5 knob big.stl
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Phone holder.stl
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Stationary part for 3-8 threaded insert.stl
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Middle holder.stl
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Middle holder bottom.stl
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Gearbox part 3.stl
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Camera holder.stl
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laser holder.stl
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Main gearbox bearing holder.stl.stl
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Main bottom part.stl
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arc left.stl
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main top part.stl
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polar knob.stl
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Main gearbox.stl
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arc right.stl
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big pulley.stl
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M5 knob.stl
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Side M3 knob.stl
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Polar scope holder eq5.stl
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updated tightener.stl
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small scale knob .stl
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small scale .stl
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vixen holder.stl
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big scale.stl
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vixen knob.stl
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stationary part 1-4 printed.stl
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stationary part 3-8 printed.stl
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stationary part for surveyors tripod.stl
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arc 85-20 right.stlDEFAULT
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arc 85-20 left.stl
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Stationary part with - 3 8 metal part.stl
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Gearbox part 4.stl
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Belt cover.stl
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Belt tightener.stl
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