M42 Dobsonian
An ultra-light telescope made for small patios and large existential questions
Features
Partially mythic photon-devouring optics
114mm primary mirror that bends starlight with scientific precision and quiet dignity
Customizable hues of aesthetic satisfaction
Pick colors for your tube assembly because the cosmos is already dark enough
Truss-type portability for wanderers
Collapses into something you can actually carry without existential despair
Works about as often as clarity permits
Non-rotating helical focuser ensures smooth adjustment of both optics and expectations
Specifications
| Mirror Diameter | 114 mm |
|---|---|
| Focal Length | 900 mm |
| Focal Ratio | f/7.9 |
| Type | Truss type dobsonian reflector |
| Materials | PETG, Aluminium, HDF, Teflon |
| Weight | 2.5 kg |
| Mount Type | Dobsonian alt-azimuth |
| Focuser | Helical, non-rotating |
M42 Dobsonian
The M42 Dobsonian is a compact, ultra-light telescope designed for backyard astronomy and occasional philosophical contemplation. Built with precision 3D-printed components and high-quality optics, it offers excellent light-gathering capability in a surprisingly portable package.
Perfect for:
- Urban stargazing with limited space
- Travel to dark sky locations
- Educational demonstrations
- Casual astronomical exploration
What’s Included
- 3D-printed customizable optical tube assembly with non-rotating helical focuser
- 3D-printed dobsonian mount with altitude bearings and Teflon pads
- 25mm/52°FOV Plössl & 9mm/68°FOV Plössl eyepieces
- Red-dot finder
- Collimation cheshire
- Mount tensioner to control friction
- Assembly instructions
Build Notes
This telescope represents the perfect balance between optical performance and mechanical simplicity. The 3D-printed components ensure consistent quality while allowing for customization. The helical focuser provides smooth, precise focusing without rotation, making it ideal for both visual and photographic use.
Assembly
Assembly takes approximately 30-45 minutes and requires only basic tools. The modular design allows for easy transport and storage.
Care & Maintenance
- Store in a dry, dust-free environment
- Clean optics with proper astronomical cleaning supplies
- Periodically check and adjust collimation
- Lubricate bearings as needed