Category Archives: User Guides and Tutorials

How to store a Celestron SCT telescope

Posted on June 26, 2013 by Reviewer

It’s best to protect your telescope from the elements and bring it inside between observing sessions. Allow the scope to warm up when bringing it inside. Uncover all optics and let the tube and tripod sit in the open. Moisture … Continue reading →

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What is a Newtonian reflector

Posted on June 26, 2013 by Reviewer

Newtonians are a type of reflecting telescope. A concave parabolic primary mirror at the back of the telescope collects and focuses incoming light onto a flat secondary (diagonal) mirror that in turn reflects the image out of an opening at … Continue reading →

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What does star magnitude mean

Posted on June 26, 2013 by Reviewer

Astronomers use a system of magnitudes to accurately measure the brightnesses of astronomical objects. An object is said to have a certain numerical magnitude. The larger the magnitude number, the fainter the object. Each object with an increased number (next … Continue reading →

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What is a star diagonal

Posted on June 26, 2013 by Reviewer

A star diagonal is a prism or mirror set to direct light at a 90-degree angle to the telescope’s optical axis. It’s an ergonomic accessory to make viewing of the sky more convenient and comfortable for objects nearly overhead or … Continue reading →

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What is a finderscope

Posted on June 26, 2013 by Reviewer

A telescope finderscope a small telescope attached to the main telescope optical tube assembly. It is of low power with a wide field of view and assists you in pointing to find objects to observe through the main telescope. Crosshairs … Continue reading →

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Can you take prime focus photographs through a Celestron Regal F-ED spotting scope

Posted on June 26, 2013 by Reviewer

Using a t-adapter and no eyepiece (prime focus) you can not achieve focus with a Celestron Regal F-ED spotting scope. This applies for t-adapters with and without a barlow lens attached. To take images with your SLR camera through the … Continue reading →

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Celestron Edge HD 8 Optical tube assembly

Posted on June 24, 2013 by Reviewer

Quick Overview 8″ EdgeHD Optical Tube Assembly Aluminum Optical Tube Celestron’s premium StarBright XLT coatings 2032 mm focal length (f/10) 40 mm eyepiece included (51x) Visual back allows for use with 1.25″ accessories 9×50 finderscope to help accurately find objects … Continue reading →

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What is a DSO

Posted on June 5, 2013 by Reviewer

A DSO stands for Deep Space Oject. A DSO can come in many forms, such as Galaxies, Nebulea and Star clusters. Some targets such as M31 (The Andromeda galaxy) and M42 ( The Orion nebula) can be seen with the naked eye. Most … Continue reading →

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Can you attach 1.25″ eyepieces to a Celestron Ultima spotting scope

Posted on May 30, 2013 by Reviewer

Here at Northern Optics one of the most frequently asked questions is “can you fix 1.25″ on to a Celestron Ultima spotting scope”. Unfortunately the answer is no. The Celestron Ultima 65, 80 and 100 mm ED and non ED all … Continue reading →

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Optical Hardware webcam adapter

Posted on May 29, 2013 by Reviewer

The Optical Hardware webcam adapter is the ideal low cost solution for taking images through your telescope using a compatible webcam, such as Philips Toucam Pro /Fun, SPC 880, 900 and Vesta Threaded to accept 1.25″ filters, such as the … Continue reading →

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