My Profile on Astrobin:
https://www.astrobin.com/users/WilliamGott/
Starburst Galaxy (Taken by the President of our Astronomical Society) - Astrobin
https://www.astrobin.com/gek830/
Astrophotography - Wikipedia
https://en.wikipedia.org/wiki/Astrophotography
Milky Way Image (a Shot I Took) - Astrobin
https://www.astrobin.com/be7t7j/
Apochromatic Lens - Wikipedia
https://en.wikipedia.org/wiki/Apochromat
Bino-Refractor that is $27,310 - Deep Space Products
https://www.deepspaceproducts.com/product/cff-bino-refractor-160mm-oil-spaced-triplet-apochromat?gclid=CjwKCAjw1JeJBhB9EiwAV612y4Uq1I-9Q1J7o6-K9mAJFySwplVHqsM1z1FI7PLxqDb3_YqAuTLUbxoC0I4QAvD_BwE
Field Flattener - Night Sky Pix
https://nightskypix.com/what-does-a-field-flattener-do/
Petzval Lens - Wikipedia
https://en.wikipedia.org/wiki/Petzval_lens
Newtonian Reflector - Wikipedia
https://en.wikipedia.org/wiki/Newtonian_telescope
Dolphin Nebula (Diffraction Spikes are Present on Stars) - Astrobin
https://www.astrobin.com/zihlpc/
Schmidt-Cassegrain Telescope - Wikipedia
https://en.wikipedia.org/wiki/Schmidt%E2%80%93Cassegrain_telescope
Telescope Pier - OPT Telescopes
https://optcorp.com/collections/telescope-piers
Planetarium Software - Wikipedia
https://en.wikipedia.org/wiki/Planetarium_software