2017年5月6日 · Fortunately, it doesn't have to be very accurate for star hopping-- anything close gives you pretty decent tracking. The 4000 wedge mounts on a single 1/4"/20 tripod thread, …

2012年1月15日 · The B&L Criterion 4000 is a 4” F12 Schmidt Cassegrain design. They have a poor reputation for quality control and many were very poor optically. And this is a real shame, …

2024年5月3日 · Hello, the Baush & Lomb Criterion are not real Schmidt-Cassegrain but only Cassegrain. The lens that holds the secondary mirror is flat on both edges. A true SCT has …

This Bausch & Lomb Criterion 8000 8" f/10 2,000mm FL Schmidt Cassegrain Telescope is in Excellent Condition. An Excellent Setup for a Beginning Amateur Astronomer.

2023年11月25日 · In this review I see what was supplied in the box labelled "Bausch and Lomb Criterion 4000 Telescope System", and try out the scope for some birding in Cornwall and …

2016年5月14日 · Star test shows a broken up diffraction patterns on both sides of focus with intermittent diffraction rings and some spherical aberration. The incomplete diffraction patterns …

Vintage Bausch & Lomb Balscope Ten Green Scope w/ Case. Get the best deals on Bausch + Lomb Telescopes when you shop the largest online selection at eBay.com. Free shipping on …

The Bausch & Lomb 63-1039 Cassegrain telescope is an excellent tool for those seeking a powerful and versatile observing instrument. With a large aperture, long focal length, and …

This Bausch And Lomb telescope is a rare find for any stargazing enthusiast. The Criterion 4000 Astro optical tube, manufactured in the USA 1984, boasts a 102mm aperture And maximum …

2024年8月28日 · This Bausch and Lomb telescope is a rare find for any stargazing enthusiast. Please see pictures for what is included in listing. Selling as is.</p>