The main goal of Celestron was to provide consumers with an affordable mirror-based telescope that has a wide aperture and focal length at a consumer-friendly price. The Celestron Edge HD is a smart iteration of a normal Schmidt Cassegrain design. The Edge HD, unlike a ‘normal’ Schmidt Cassegrain telescope, produces aberration free, flat field images Check out the current price of the Celestron Edge HD 8″ at Agena (USA/WW), or Astroshop (EU/WW). ![]() This is due to the fact that the Edge HD is a reflector (mirror-based) telescope instead of a lens-based telescope, which is cheaper to produce. As an example, in the price range of an Edge HD, you’ll be looking at refractors that have an aperture of about 110 to 130mm, and a focal length of about 800 to 1000mm, whereas the Edge HD offers you with a whopping 200mm aperture and a 2000mm focal length. This is where refractors (lens-based telescope) get expensive for consumers. However, in order to zoom in on smaller objects such as the planets in our solar system, or some of the smaller deep-sky targets, a telescope with a bigger aperture and a longer focal length is needed. In my case, I already own a widefield apochromatic refractor – my TS 80MM F/6 Photoline APO refractor – which I use for wide(r) field astrophotography with great satisfaction. So it often comes down to looking at the best option – given the goals you have in mind. Each telescope has its own pros and cons. The Edge HD offers a bigger aperture and longer focal length than APO refractorsĬhoosing “the right” telescope can be hard, and actually I’m convinced that there is no such thing. Finally, I’ll share my “first light” experiences using the Edge HD on the moon and some of our planets. In this blog, I’ll first share my thoughts on what kind of telescope I was looking for, and what advantages the Edge HD had to offer over other telescopes in a similar price range that convinced me to buy an 8″ Edge HD. Additionally, the Edge HD can be customized with aftermarket add-ons to serve various purposes, including planetary, small DSO, or widefield observation. This results in high-resolution images with sharp, pinpoint stars from edge to edge. The Edge HD is renowned for its astrophotography capabilities, thanks to its lens-based system that corrects for off-axis coma and field curvature. ![]() Its compact and lightweight design, weighing 6.3 kg (14 lbs) and measuring 432mm (17″) in length, ensures easy portability, setup, and storage. The Celestron Edge HD 8″ (800) telescope offers a 2030mm focal length and a 203mm (8″) aperture at a reasonable price ($1599). ![]() For optimal performance when photographing smaller DSO’s and planets, a longer focal length and larger aperture are essential.
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