Telescopes

Telescope Craigslist

What Is A Telescope?

What is a telescope? How do they work and what are they used for? These are some of the most basic questions about the topic of telescopes, but some of the most important in regards…

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Barlow Lens

Barlow Lens

Named after Peter Barlow, the Barlow lens is a diverging lens which, which is used in series with other optics in an optical system to increase the effective focal length of an optical system. This increased focal length of the optical…


Dew Shield

Dew Shield

A dew shield is a device used to prevent moisture or condensation buildup on the lens of a camera or telescope collector during night observations. There are two general ways that a dew shield can work, which is by either just providing shade for the lens in use…


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Polar Alignment

Polar alignment is the act of aligning the rotational axis of a telescope’s equatorial mount or a sundial’s gnomon with a celestial pole to parallel Earth’s axis. There are a variety of alignment methods and equipment to help amateur astronomers to assist with polar alignment of their…


SOFIA Telescope

Stratospheric Observatory for Infrared Astronomy (SOFIA) Telescope

The SOFIA Telescope is a joint NASA and German Aerospace Center project to construct and maintain an airborne observatory. Designed as the successor to the Kuiper Airborne Observatory, SOFIA’s telescope saw first light on May 26, 2010. It will observe celestial magnetic fields, star-forming regions,…


Eyepieces

Telescope Eyepieces

Telescope Eyepieces are types of lens that are attached to a variety of optical telescope devices. When looking through the device, the lens that is closest to the eye that is considered the eyepiece. It…


Realistic Telescope Simulator

Through a friend, I was referred to this awesome new site and resource for telescope simulator, which can be found at http://www.stelvision.com/en/telescope-simulator/. This tool is so helpful as it allows astronomers to get a realistic…


History Of Telescopes

Which Telescope is Right For You?

Buying a telescope can be a challenge, as there are numerous options from which to choose. The mounts and telescopes widely differ in many ways, such as cost, size, and maintenance, and everybody has their…