A Pencil of Rays: Ultimate Guide to Lens Design
Recently several NOVAC members have been reading and discussing this great post on lens design from https://www.pencilofrays.com/ https://www.pencilofrays.com/lens-design-forms/
NOVAC Offers Digital Library for Members
We are pleased to announce that NOVAC now offers a digital library that allows members to borrow and read astronomy-related books using a browser, tablet or smartphone. Please see instructions below, if you have any problems, feel free to contact Chris Spain at librarian@novac.com. Short Instructions Go to: https://libbyapp.com/library/novac Login to the site with your [...]