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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 Turn On the Time Stamp Function on Your Celestron VistaPix 8 x 32mm Binocular and Digital Camera

By eHow Electronics Editor

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The time stamp function on the Celestron VistaPix binocular and digital camera combination prints the current time and date in the corner of any photo you take, for easy organization and reference. You can turn off this function to take unmarked ... more »

How to Turn the ATN Night Patriot Night Vision Monocular Into a Goggle System

By eHow Electronics Editor

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ATN Night Patriot Night Vision monocular is a versatile device. You can convert this device into a Goggle System as well. Here’s how to turn the ATN Night Patriot Night Vision Monocular into a Goggle System... more »

How to Use a Camera Adapter Tube With the Sky-Watcher SK705AZ3 Short Tube Refractor Telescope

By eHow Electronics Editor

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The Sky-Watcher SK7059AZ3 Short Tube Refractor Telescope is considered an ideal choice to enjoy sky watching. This refractor telescope model is equipped with an adjustable objective lens case which is of a multi-coated achromatic type. For "prime ... more »

How to Use a Camera Adapter Tube With the Sky-Watcher SK707AZ2 Refractor Telescope

By eHow Electronics Editor

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To use the Sky-Watcher SK707AZ2 Refractor Telescope with a camera, you need a camera adapter tube. It can work as a high magnification lens for your telescope. Attaching a camera adapter tube to a camera can be done in just a few minutes... more »

How to Use a Camera Adapter Tube With the Sky-Watcher SK909AZ3 Refractor Telescope

By eHow Electronics Editor

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A Sky-Watcher SK909AZ3 Refractor Telescope is an ideal choice for those who intend to view objects in the sky minutely. This model is equipped with an adjustable objective lens case which is a multi-coated achromatic type. For "prime focus" ... more »

How to Use a Camera Adapter With the ATN Night Patriot Night Vision Goggle

By eHow Electronics Editor

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Your ATN Night Patriot Night Vision Monocular is a versatile device and can be used with a 35mm camera or camcorder. If you are planning to use a camcorder, ensure that your camcorder has the MACRO feature. Most camcorders nowadays are equipped ... more »

How to Use a Camera Adapter with the ATN Night Storm Night Vision Monocular

By eHow Electronics Editor

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There are several versions of Night Storm Night Vision Monocular offered by ATN. You can use your ATN Night Storm Night Vision Monocular not just for hunting, camping or surveillance but also with a 35mm camera or camcorder. If you are planning ... more »

How to Use a Closed-Circuit Television to Read a Book

By Matthias Niska

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A closed-circuit television (CCTV) is a machine which uses a camera to project an enlarged image of your reading material onto a television monitor. Needless to say, it can be a vitally important tool for a person with a significant visual ... more »

How to Use a Digital Microscope

By eHow Electronics Editor

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Digital microscopes are a real 21st century advancement on microscope technology. They come with software for your computer that allows you to see real-time images on your monitor of what you're observing with the microscope. Take a step into the ... more »

How to Use a Digital Rangefinder

By eHow Electronics Editor

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Photographers and architects have used rangefinders with manual focus knobs for decades due to a lack of options. Camera companies and other rangefinder producers have opened the door for digital devices that allow for more accurate measurements. ... more »

How to Use a Golf Rangefinder

By eHow Electronics Editor

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Amateur golfers have turned to specialized rangefinders to improve their skills over the last decade. Rangefinders were originally developed for the construction industry, but they have since crossed over due to the prevalence of golf as a global ... more »

How to Use a Laser Rangefinder

By eHow Electronics Editor

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The use of lasers in everyday life have improved the accuracy and speed of work in various fields. Photographers and architects have taken advantage of this trend by using laser rangefinders to snap a great picture or build a new structure. You ... more »

How to Use a Lens Pen

By eHow Electronics Editor

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You're on an Audubon chapter outing to nab some new birds, and your viewfinder captures a thumb print. Perhaps you're at a desert star party for some astronomical imaging, and sand has marred your lens. There's no time to lose with air blowers ... more »

How to Use a Microscope Digital Camera Adapter

By eHow Electronics Editor

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Most serious microscope hobbyists would love to use their digital cameras to take pictures of the up-close views they get. Taking pictures of microscope images is also useful for students and teachers. Images can be blown up and studied in depth ... more »

How to Use a Rangefinder for Hunting

By eHow Electronics Editor

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Hunters of all ages and experience levels have turned to rangefinders to help find their prey. Rangefinders can be attached to a rifle to target slow-moving animals or used on their own to scout out potential nesting areas. You can use a ... more »

How to Use a Rangefinder in Construction

By eHow Electronics Editor

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The rangefinder is a vital tool to any construction project because quality assurance is important. Homeowners count on construction teams to utilize the right tools to make sure homes are livable for years to come. Your use of a rangefinder on ... more »

How to Use a USB Microscope

By eHow Electronics Editor

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A USB microscope is similar to a digital microscope. You can send images from both types of microscope to your computer for viewing, saving and printing. The big difference between the two is that most USB microscopes can be used both ... more »

How to Use a Video Microscope

By eHow Electronics Editor

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The video microscope is a relatively new addition to the microscope family. By displaying images on a video screen rather than restricting the view to the eyepiece of the microscope, video microscopes have a distinct advantage over traditional ... more »

How to Use an Industrial Laser Rangefinder

By eHow Electronics Editor

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Rangerfinders are primarily used in excavation and commercial construction. Foremen and site managers use industrial laser rangefinders to determine spatial relationships and prevent excessive excavation. Your use of an industrial laser ... more »

How to Use an Ultrasonic Rangefinder

By eHow Electronics Editor

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One of the latest developments in rangefinder technology is the use of ultrasound as a medium of measurement. Ultrasound waves are emitted by the rangefinder and return to the device to help determine the distance from the targeted object. Your ... more »

How to Use Autostar on the Meade LX90GPS Schmidt-Cassegrain Telescope to Calculate Sunset Time

By eHow Electronics Editor

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Calculating the sunset time will allow you to return to your telescope in time to view certain objects in the sky. Here's how to do it... more »

How to Use Autostar to Identify an Object With Your Meade DSX-125C Altazimuth-Cassegrain Telescope

By eHow Electronics Editor

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Use Autostar's "Identify" menu to learn about any unknown objects you find in the sky... more »

How to Use Bar Coding

By eHow Electronics Editor

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Bar coding is the primary form of identification in retail sales. Virtually every product for sale has that series of black bars against white surface, which is scanned over to identify the type of product and its price... more »

How to Use Individual Focus on Bushnell Natureview 8x40 Birder Binocular

By eHow Electronics Editor

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A binocular is a vital piece of any serious bird watcher's equipment, as it makes the hobby easier and more enjoyable. THe Bushnell binocular is lightweight and small enough to fit in a large pocket or handbag and offers many different focus modes... more »

How to Use Insta-Focus With Your Bushnell 4x30 Insta-Focus Compact Powerview Binocular

By eHow Electronics Editor

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What if you had a device that let you see a crack on the opposite building of your house, the birds on the far-off nest, the cricketer clearly in a crowded stadium or your child's performance on the stage in a crowded hall? Bushnell offers a ... more »