How to make an simple astronomical telescope
This DIY telescope experiment helps you build your own telescope using simple materials and understand how lenses magnify distant objects. learn optics, reflection, and refraction in a fun hands-on way.
🔭 DIY Telescope Experiment (Step-by-Step Guide)
This DIY telescope experiment helps you build your own telescope using simple materials and understand how lenses magnify distant objects.
Learn optics, reflection, and refraction in a fun hands-on way.
A telescope is an optical instrument that makes distant objects appear closer using lenses or mirrors. This DIY telescope experiment allows you to build your own working telescope and explore basic astronomy concepts.
The first telescope was invented in 1608 in the Netherlands by Hans Lippershey. Today, you can build a simple version at home and understand how it works.
- How a telescope works
- Reflection and refraction of light
- How to build a telescope using simple materials
🧰 Materials Needed
You can use recycled materials like cardboard and PVC pipes. Be creative!
- Convex Lens (D: 7.5cm, F: 35cm)
- Eyepiece Lens (D: 2.2cm, F: 35cm)
- Cardboard
- PVC pipe
- Black chart paper
Complete Lens Set →
🛒 DIY Telescope Kit (All-in-One)
Don’t want to collect parts separately? Get a complete ready-to-build telescope kit.
View Telescope Kit →---
🔁 Alternate Lens Options
- Objective Lens: 45–50cm focal length, 52mm diameter
- Eyepiece: 4cm focal length, 25mm diameter
🎥 Watch Before You Start
This video will give you a complete overview of the DIY telescope building process:
This version uses inventor box material:
Making of telescope with inventor box material
Required materials for DIY telescope
🛠 Required Tools
- Scissors
- Paper cutter
- Tape
🔰 Step 1: Prepare Lens Holder
Mark a circle on cardboard using the lens as a guide.
Marking circle for lens holder
Cut the circle carefully.
Cutting lens holder
Now draw another circle using a PVC pipe in the center.
Marking center for pipe
Cut to form a doughnut shape. Make two such pieces.
Doughnut-shaped cardboard pieces
⚙️ Step 2: Prepare Telescope Body
Take a black chart sheet (25cm × 60cm).
Chart sheet for telescope body
🔭 Step 3: Roll the Telescope Tube
Place the lens and roll the chart sheet around it.
Rolling the tube
Basic telescope tube ready
🔩 Step 4: Insert Lens Holders
Insert the cardboard rings inside the tube at some distance.
Positioning lens holders
✂️ Step 5: Prepare PVC Pipe
Cut PVC pipe into 3cm and 17cm pieces.
PVC pipe pieces
👁 Step 6: Fix Eyepiece
Attach eyepiece between the two PVC pipes using tape.
Fixing eyepiece
🚀 Step 7: Final Assembly
Insert the PVC pipe into the tube. Your telescope is ready!
Final DIY telescope
🔬 How This DIY Telescope Works
This telescope works on the principle of refraction. Light enters through the objective lens and forms an image. The eyepiece magnifies this image, allowing you to see distant objects clearly.
🚀 Need Help?
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