How to make a telescope

1
How to make a telescope
2
Cone intersects

• Parabola
• Sphere
• Hyperbola
• Ellipsoid

3
Why make a telescope?

• Learn more about the functioning of telescopes
• Cost-efficient
• Make a telescope which is not made in
  mass-production (Custom made to your likings)
• Want to do something with his/her hands

4
3 different types of ATMers

• 1
• Bought their own mirror (primary and secondary) ,
  already aluminized.
• Make the rest of the telescope, usually excluding
  the spider and focusser.
• 2
• Grind and polish their own mirror(s) except
  Newtons secondary mirror.
• Make the rest of the telescope, usually excluding
  the spider and focusser.

5
Continued of last page

• 3
• Make everything by themselves, including spider,
  mirror(s), focusser, mirror cell
• Extremely rare

6
Things to consider before starting

• Budget limit
• For what kind of observations do you want use the
  telescope (deep-sky or planetary)
• What type of design
• Experience
• Suitable environment for the workshop

7
The first step

• Find a company that sells telescope making kits.
  This includes
• Mirror blanks (Youll need two mirror and tool)
• Abrasives (SiC Carborundum)
• Polishing powder (CeO2 , rouge)
• Pitch
• Loupe

8
Types of telescopes which can be made from
easiest to hardest

• Newton
• Kutter
• Classical Cassegrain
• Gregorian
• Pressman-Camichel
• Dall-Kirkham
• Ritchey-Chretien

9
Challenges for the die-hard

• Schmidt-Cassegrain
• Schmidt Camera
• Maksutov-Cassegrain
• Maksutov Camera
• A(po)chromate

10
Which telescope for what purpose

• F/dlt4 Photografic use
• 4ltF/dlt6 Deep Sky use
• F/dgt6 Planetary use

11
Workshop

• Clean environment
• Stable temperature and ground
• Fixed work post (barrel, tripod)
• Good lighting
• Area where you can store your material cool
• Abrasives
• Polishing powder
• Pitch
• Squirt bottle
• Sink and towel to clean the mirror

12
(No Transcript)