- Joined
- Jul 28, 2017
- Messages
- 2,350
I know there are a number of amateur astronomers in the forum. Currently (as of 9/5/2020) Surplus Shed has all their achromats on sale, for 40% off their regular price. There's a large selection of mounted, unmounted and different shapes. This might be an opportunity to pick up a few lenses for that optical project you've been thinking about.