View Deal Gskyer Telescope 70mm: was $130 now $87 at Amazon Save 33% on the Gskyer 70mm Alt-az refractor telescope at Amazon. This refractor comes complete with all the accessories a beginner ...

So, for the best Sky-Watcher telescope deals, scroll down below. Save £26 on a refractor telescope that, with a 90mm aperture, a 900mm focal length and a multi-coated objective lens, offers ...

Refractor telescopes use specialised lenses to gather and focus light into an image, displaying a magnified sky view. In contrast, reflector telescopes use curved mirrors to reflect light onto the ...

If you think that choosing the most powerful home telescope is just as simple as finding one with the highest magnification capability, then you’re wrong! There are many other key factors affecting a ...

Find the best telescopes to unlock the wonders of the night sky and view lunar occultations, celestial conjunctions and planetary parades in January. The best telescope unlocks the wonders of the ...

Impact and progress Frontiers' impact Progress Report 2022 All progress reports ...

Earth’s nearest neighbors will be on display in the night sky and inside the Cincinnati Observatory during Nearest Neighbors Night on Saturday, February 1. This event will focus on the three celestial ...

Optical instruments: Microscopes and astronomical telescopes (reflecting and refracting) and their magnifying powers. Wave optics: Wave front and Huygen’s principle, reflection and refraction of ...

Maintained by the DePauw University Physics and Astronomy Department ... is home to the star of McKim Observatory, a Clark Refracting Telescope with a 9.53-inch objective lens made by the renown ...

Jan. 29, 2025 — The universe is getting more disordered, entropy is growing -- this is the second law of thermodynamics. But according to quantum theory, entropy should actually stay the same ...

These well-regarded universities have shown strength in producing research in a wide range of topics related to physics – the study of matter and energy. Topics include particle and nuclear ...