I purchased a 90x refractor telescope with below configuration.
- Objective: 50mm diameter with 360mm focal length
- 2 Eye pieces: 6mm, 20mm (10-1/ 8" scope)
- 1.5x erecting eye piece
It measures 13- 5/8” long x 2-1/2" diameter.
I was trying to see a building half Km far from my balcony. But I can't see anything with any eyepiece other than white lighting circle. Moreover when I tried an eyepiece of toy binocular, I could see something, not much larger but at least visible.
Is it something minimum distance of view for a telescope? Or do I need to focus it? (I don't know how)