hi , do any one have an idea on making a telescope below 50$/100$ but i want a magnification of 150x or more Answered

Ebay, amazon or whatever the local "buy things from the internet" place is. You can find a telescope for under $100 at each of those places. They will be low quality but usable. Building a telescope is difficult, takes time and for the size you want it's cheaper to buy one. Once you've bought a $100 scope and discoved its limitations, then you can sell it, use the money to buy a good mount and build your second scope :)

Search Function

Have you tried seaching the site

https://www.instructables.com/howto/telescope/

Find what lenses you can get easily.

Do you have to make it? You can buy one for about $30. Course the optics aren't going to be all that great but it will work.

http://www.amazon.com/Vivitar-75x-150x-Zoom-Telesc...

Now Vivitar does make vary cheap products both in cost and quality.

Here is another option that should be a lot better than the vivtar but still not all that great.

http://www.walmart.com/ip/17690594?wmlspartner=wlp...

But if you want good quality you want a refractive scope.

http://www.ebay.com/itm/like/131045784329?lpid=82