Is the Celestron Astromaster 130EQ good for daytime viewing as well as night?
Not really. In fact there are almost no telescopes equally suitable for both day and night viewing, because the requirements are quite different. For astronomical viewing, it’s all about light gathering. The larger the aperture, the better. Inverted images are not a problem, since there’s no “right way up” in space, and the extra lenses or prisms required to get an erect image cut down the light throughput and introduce aberrations. The magnifications used in astronomy are generally way too high for daytime use. Spotting scopes optimized for daytime use are very awkward for astronomy. Their straight-through viewing causes cricks in the neck, and their optics are often sub par. The 130EQ is a Newtonian reflector, which is particularly unsuitable for daytime viewing. The image is inverted unless you stand with your back to the object you’re looking at. Trying to point an equatorial mount at an object on the ground is a major challenge. The only scopes suitable for both are small refracto
