The Explore Scientific AR102 Air-Spaced Doublet Refractor is a high-quality telescope that is perfect for both amateur and professional astronomers. The air-spaced doublet design uses two lenses with a space between them to correct for chromatic aberrations, which results in sharper and more accurate images. The aperture of 102mm allows the telescope to gather a significant amount of light, making it ideal for observing faint objects such as deep-sky objects like galaxies and nebulae. With a focal length of 660mm, this telescope has a fast f/6.5 focal ratio, which allows for wide-field observing, perfect for capturing large areas of the night sky in one image. The telescope also comes with a 2" focuser and a 9x50 finder scope, which makes it easy to find and track objects in the night sky. The telescope is also lightweight and portable, making it easy to take on the go. The package includes a hard carrying case for easy transport and storage.
In addition to its high-performance optics, the Explore Scientific AR102 Air-Spaced Doublet Refractor also features a durable and sturdy build quality. The telescope's optical tube is made of aluminum and is coated with a hard anodized finish that provides protection against wear and tear. The focuser is also built to last, and is able to support heavy eyepieces and cameras with ease.
The telescope also has a wide compatibility range of accessories, for example, it can accept a wide range of eyepieces and cameras, including ones with a 2" barrel size, which allows for even more versatility in observing and imaging. The telescope also has a built-in thread for easy installation of a camera T-ring, making it a great choice for astrophotography. With the addition of a suitable adapter and camera, the telescope can be used for capturing stunning images of the night sky.
Overall, the Explore Scientific AR102 Air-Spaced Doublet Refractor is an excellent telescope for both visual observing and imaging. Its high-performance optics, durable build quality, and wide compatibility range make it a versatile and reliable instrument that will provide a lifetime of enjoyment for any astronomer.