Posted By George Blahun
but there are many that have stumped me - e.g. PST, TMB, TOA, TEC, APO, etc.
PST is Personal Solar Telescope
TMB is for Thomas M Back (a deceased telescope maker) and the acronym is used for a line of astro products
TOA is Takahashi's apochromatic (APO) duo of telescopes, the 130mm and 150mm (heavy but superb)
TEC is Telescope Engineering Company. They are from Colorado, owned by Yuri and produce superb APO refractors and Maksutovs.
Most 3 element APO refractors have color free images (low or absent CA for chromatic aberration) and many use a calcium fluorite element which is really a crystal grown in a lab and not a true glass. This usually means big bucks.
You'll start to pick up things over the next few months. Oh yeah, one thing which I have been promoting is the use of BV or binoviewers, using two eyes instead of mono viewing through a scope. One thing which hasn't changed is everything really cool is also really expensive. AM (Astromart) is the best place to buy and sell Astro Gear.