Strap a Raspberry Pi 2 + Camera to a pair of binoculars (or telescope, microscope, etc.) and use one of adafruit's touch LCDs + custom raspbian image to view and take pictures. (Scroll through the photos above for examples / comparisons)
This project takes more time, money and is clunkier than if you were to purchase a commercial product. You're probably not on instructables because you wanted to buy a solution ; )
There are two sets of instructions here! See the images and video above for a brief overview. The first few prep steps are the same for both. Once construction starts you have a choice between a "Quick & Dirty" version that anyone can do, and an "Over-engineered" edition requiring fancier tools (laser cutter or power tools) and more time.
Finally, this is a fairly newb friendly guide, some may find it a bit slow. It's also very unlikely you have the same pair of binoculars, any dimensions mentioned are going to differ for you. Make your own measurements!
Super props to Phillip Burgess and Ruiz Brothers for their DIY WiFi Camera Script and adafruit for making it very easy to connect an LCD to the Pi. Much thanks to the Ann Arbor District Library and Maker Works for access to wonderful tools!