All you really need is a good step by step guide to construction. The best guides don't just offer instructions but also offer advice on searching for the best but cheapest makeshift materials that you can find right in your own home. Even if you had to buy every piece of material, you'd still pay so much less for them than for a brand new high grade unit.

The easiest path to making a Monocular Telescope is to devise a Newtonian unit. This is perhaps one of the simplest models to follow and is named after Isaac Newton who used it centuries ago. This basic device just has two lenses to capture light and direct it through the eyepiece. This is more or less the same idea behind easy to make homemade units.The materials you need might be a bit different from what Newton used in the past. You'd need pyrex lens blanks, cardboard mailer coated in varnish and some plywood. The real key to making these simple materials work is in the polishing and shaping of the lenses.

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