determine the telescope's field of view: apparent - how much of the sky, in degrees, is seen edge-to-edge through the eyepiece alone (specified on the eyepiece; true or real - how much of the sky can be seen when that eyepiece is placed in the telescope (true field = apparent field...
determine the telescope's field of view: apparent - how much of the sky, in degrees, is seen edge-to-edge through the eyepiece alone (specified on the eyepiece; true or real - how much of the sky can be seen when that eyepiece is placed in the telescope (true field = apparent field...
Conversely, an alt-azimuth fork mount is one of the simplest to operate. That’s because the telescope will move in a basic horizontal and vertical motion, making it easy to move the scope to your intended target. With a fork mount, the telescope might be secured between two forks (so t...
An eyepiece works by taking the light that’s captured and focussed by your telescope and magnifying the image that is seen by your eye. The eyepiece needs to do this effectively if you’re to get a really good view of that celestial object. As light passes through the lenses in your ey...
Although I am not a huge fan of tripod-mounted Alt-Az telescopes in this price range, the addition of the Celestron StarSense Explorertechnologymakes this a top model to consider. The dedicated smartphone app analyzes photos taken on your phone to determine the telescope’s exact position. ...
Calculate magnification by dividing the focal length of the telescope by the focal length of the eyepiece. For example, a 900mm refractor, when used with a 10mm eyepiece, provides a magnification of 90x. Consult the owner's manual for your Meade telescope to determine its focal length. ...
Google Street View likely has photos of your home, but you can request to have them blurred out. Here's a step-by-step guide to requesting Google blur your house.
When purchasing a telescope, it is important to consider a few factors, which also influence the cost of the telescope. Aperture Thediameter of a telescope’s lens or the primary mirroris known as itsaperture. The aperturedetermines the light-gathering abilityof the telescope and is the most ...
Some photographers like to refer to the500 Ruleto determine the perfect exposure length for them to shoot using a particular camera and lens combination. Wide-angle lenses (such as theRokinon 14mm F/2.8) have an extremely large field of view, which not only capture more of the sky in a ...
Lenses, like those in a telescope or in a pair of glasses, take advantage of refraction. A lens is a piece of glass or other transparent substance with curved sides for concentrating or dispersing light rays. Lenses serve to refract light at each boundary. As a ray of light enters the tr...