>>3594273If you need a budget super-tele, get one of these ~100$ telescopes they sell on Amazon, a cheap glassless M42 adapter and some glue.
Disassemble one ocular, take the metal tube section of it.
Now take the M42 adapter and put some duct tape on the camera side of it.
Center the metal tube on the duct tape on a smooth surface and glue them together, I suggest epoxi resin for that.
Whe the glue is cured, remove the duct tape and clean it up.
Now you can conect the adapter with the telescope, to take up the slack, wrap the metal tube with scotch tape untill it fits perfectly.
Note: These telescopes are usualy slow as fuck, but reasonably sharp.
It's a budget way of getting a prime lens in the 500-1000 mm range and something like f/8-f/10.
