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From microscopes to telescopes, rifle scopes to night vision, eHow’s got the optics information you’re looking for. In the market for binoculars? On the hunt for the perfect optical accessories for the bird watcher in your life? Advice from eHow experts make shopping for optics easy. Having trouble getting a good look at Mars on a perfectly clear night? Learn how to focus a telescope. From sighting wild game to locating a paramecium on a microscope slide, see it all with step-by-step instructions from resident experts.

Categories in Optics

Articles in Optics

How to Create a Guided Tour with Your Meade 12-Inch LX90 GPS Schmidt-Cassegrain Telescope

By eHow Electronics Editor

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You can download guided tours of the night sky for your Meade LX90 GPS Schmidt-Cassegrain telescope from the Meade Web site (see link below). Or, if you are interested in creating your own guided tour, you can set your telescope to slew to a list ... more »

How to Create Your Own Guided Tour of the Sky Using Autostar and Your Meade DSX-125C Altazimuth-Cassegrain Telescope

By eHow Electronics Editor

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If you are interested in creating your own guided tour, you can set your telescope to slew to a list of predetermined objects. Information will be displayed about those objects, including its type constellation location, and RA and Dec coordinates... more »

How to Create Your Own Guided Tour of the Sky Using Autostar and Your Meade DSX-90 Altazimuth-Cassegrain Telescope

By eHow Electronics Editor

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If you are interested in creating your own guided tour, you can set your Meade telescope to slew to a list of preset objects. Your telescope will display information about those objects, including the object type constellation location and RA and ... more »

How to Create Your Own Guided Tour With AutoStar and Your Meade LX-90 Schmidt Cassegrain Telescope

By eHow Electronics Editor

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Even though it can be great to take a programmed tour of the sky with your Meade LX-90 Schmidt Cassegrain Telescope, it can be even more exciting to take a tour that you designed yourself. Here's how you to create a tour on your computer... more »

How to Create Your Own Guided Tour With Your Meade LX90GPS Schmidt-Cassegrain Telescope

By eHow Electronics Editor

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To customize a guided tour with your Meade LX90GPS Schmidt-Cassegrain Telescope, you can set the device to slew to a chosen list of objects. You will find information displayed regarding those objects including the object type, constellation ... more »

How to Download Photos From Your Celestron VistaPix 8x32 Binocular and 3.2mp Digital Camera

By eHow Electronics Editor

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The Celestron VistaPix 8x32 Binocluar and Digital Camera is one of the most versatile and user-friendly models in its range. By linking to your computer, you can perform a range of functions through the special software included. This includes ... more »

How to Edit a Site Programmed Into Autostar on Your Meade DSX-125C Altazimuth-Cassegrain Telescope

By eHow Electronics Editor

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Autostar's database does not carry an exhaustive list of geographic sites. Follow these steps to enter a site that is not already stored within the database... more »

How to Edit a Site Programmed into Autostar on Your Meade DSX-90 Altazimuth-Cassegrain Telescope

By eHow Electronics Editor

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Autostar does not list every site on the Earth; you might have to edit a site's name, latitude, longitude and time zone shift. Follow these steps to enter the information... more »

How to Enter Data Into Autostar for Your Meade DSX-125C Altazimuth-Cassegrain Telescope

By eHow Electronics Editor

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When using Autostar, you can enter numbers and text. This process will help you use your telescope and the Autostar feature in particular... more »

How to Enter Data into Autostar for Your Meade DSX-90 Altazimuth-Cassegrain Telescope

By eHow Electronics Editor

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With the Meade DSX-90 Altazimuth-Cassegrain telescope, you can enter numbers and text that will help you use the telescope and the Autostar feature. Here's how to do it... more »

How to Find a Star With GO TO on the Meade LX90GPS Schmidt-Cassegrain Telescope

By eHow Electronics Editor

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You can use the GO TO feature on your Meade telescope to quickly find known stars. Here's how it works... more »

How to Find An Object With Your Meade LX90 Schmidt-Cassegrain Telescope Using Known Coordinates and Autostar

By eHow Electronics Editor

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Finding stars and other objects with your Meade LX90 telescope is easy when you use the "Go To" feature on Autostar. Here's how it works... more »

How to Find Celestial Objects Using the Setting Circles of the Sky-Watcher SK804TAEQ Tabletop Telescope

By eHow Electronics Editor

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The Sky-Watcher SK804TAEQ Tabletop Telescope has two types of setting circles—RA (Right Ascension) and DEC (Declination). These are used for locating faint objects in the night sky with the help of star charts. The RA (Right Ascension) setting ... more »

How to Find LED Display Signs Online?

By whymot333

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LED display signs use LED technology, which utilizes a form of electroluminescence. LED displays are very powerful (more so than neon lights), extra durable, convenient, flexible, and best of all low in price. People use them for many purposes, ... more »

How to Find Planets Using the Meade LX90 GPS Schmidt-Cassegrain Telescope

By eHow Electronics Editor

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With the Meade telescope, you can peer beyond the closest stars and study the planets from ringed Saturn to angry red Mars. Follow these steps to start your adventure... more »

How to Find True North With Your Meade LX90GPS Schmidt-Cassegrain Telescope

By eHow Electronics Editor

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Finding true North with your Meade telescope is part of the Auto Align process. You will need to complete the entire process to reach your goal. Follow these steps... more »

How to Focus a Sky-Watcher SK MAK Maksutov-Cassegrain Spotting Scope

By eHow Electronics Editor

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The whole point of having a telescope is to be able to view distant objects--clearly. If you don't adjust the focus, however, you'd do just as well squinting... more »

How to Focus Higher Millimeter Lenses for the SmartFinder of Your Meade DS-2000 Series Reflecting Telescope

By eHow Electronics Editor

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A telescope’s eyepiece magnifies the light gathered by the optical tube. Each eyepiece has a focal length, expressed in millimeters, or “mm.” The smaller the focal length, the higher the magnification. For example, an eyepiece with a focal length ... more »

How to Focus the ATN Night Patriot Night Vision Monocular

By eHow Electronics Editor

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ATN Night Patriot Night Vision Monocular is a multipurpose night vision device that you can use as a compact hand-spotting scope, a hands-free goggle system or a weapon sight. Here's how to focus the device... more »

How to Focus the Sky-Watcher SK1206AZ3 Short Tube Refractor Telescope

By eHow Electronics Editor

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Focusing the telescope is important to getting sharper images. You may have to focus your telescope frequently depending on the distance of the object, outside temperature and flexures. Besides, if you change the eyepiece or insert (or remove) ... more »

How to Focus the Sky-Watcher SK705AZ3 Short Tube Refractor Telescope

By eHow Electronics Editor

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Telescopes allow you to get a better view of objects in the sky. You need to properly focus to get a sharp image of the object under view. Focusing a Sky-Watcher SK705AZ3 Refractor Telescope can be done in a few steps... more »

How to Focus the Sky-Watcher SK707AZ2 Refractor Telescope

By eHow Electronics Editor

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Focusing is the most important factor when you use a telescope for the first time. It is very likely that the telescope is out of focus at the initial stage. By appropriate focusing, the images or objects that look blurred become gradually ... more »

How to Focus the Sky-Watcher SK804AZ3 Short Tube Refractor Telescope

By eHow Electronics Editor

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The Sky-Watcher SK804AZ3 is an 80 mm telescope with a focal ratio of f/5 and focal length of 400 mm. It is a multi-coated refractor portable telescope. Focusing this telescope is easy. You can focus it accurately to get sharper and clearer images ... more »

How to Focus the Sky-Watcher SK909AZ3 Refractor Telescope

By eHow Electronics Editor

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A telescope must be focused accurately to view an object properly. An out-of-focus telescope will show blurs or nothing at all. The first time you use a new telescope, it will most likely be out of focus. Get proper focus and begin enjoying the ... more »

How to Focus With Your Olympus Tracker 12x25 PCI Compact Binocular

By eHow Electronics Editor

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While observing distant objects, you must the focus on the Olympus Tracker 12x25 PCI Compact Binocular to gain maximum clarity. Here's how to do it... more »