How to measure a magnifying glass (I want to build a telescope)

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SUMMARY

This discussion focuses on building a telescope and the importance of selecting the right lens type. For a refracting telescope, an achromatic or apochromatic lens is recommended to minimize chromatic aberration. The conversation emphasizes the need for the user to provide specific details regarding their intended use, budget, and available tools to receive tailored advice. Additionally, it highlights the necessity of conducting further research before seeking assistance.

PREREQUISITES
  • Understanding of refracting telescope design
  • Knowledge of lens types: achromatic and apochromatic
  • Familiarity with chromatic aberration and its impact on image quality
  • Basic mechanical skills for telescope assembly
NEXT STEPS
  • Research the differences between achromatic and apochromatic lenses
  • Explore telescope building kits and available tools
  • Investigate methods to minimize chromatic aberration in optics
  • Learn about the mechanical assembly of refracting telescopes
USEFUL FOR

Astronomy enthusiasts, amateur telescope builders, and anyone interested in optical design and lens selection for telescopes.

Avijit Palit
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I want to build a telescope and want to know which type of lense is better suit for this.
Please anyone help...
 
Last edited by a moderator:
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Avijit Palit said:
I want to build a telescope and want to know which type of lense is better suit for this.
Plz anyone help...
You will have to tell us more before we can give you any helpful answers. What do you want to use this telescope for? What is your budget, in time and money? What are your mechanical skills? What equipment and tools do you have access to?

There's an enormous amount of information here and elsewhere on the Internet; do more investigation and come back with more specific questions, and we will be able to help.
 
For a refracting telescope, which is what you imply, you certainly want to start with an achromatic or better yet an apochromatic lens. While multielement lenses are not cheap vs a single element lens they are necessary to reign in chromatic aberation, which would otherwise be intolerable.
 

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