Chromatic Aberration. Colour Fringing. ED Glass and HD Glass. These are all terms that we have heard before, but how do they affect your binoculars? What do they actually mean, and how should they influence which pair of binoculars you choose?
Category: Guides
How I used the right type of Barlow to focus a DSLR on a small Newtonian telescope.
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Top 10 telescopes for 2019
Bill, Optics Central’s astrophotography specialist – and general all-round enthusiast – gives his opinion of the top 10 telescopes for 2019. See what he thinks! My boss asked me to come up with a list of the top 10 telescopes for 2019. It’s a big ask, as they’re all so different, and have such a […]
It’s getting into the Christmas season, and people are starting to think about presents. We made up this list of telescopes (and a binocular) with kids of between about 5 and 10 in mind.
This is part 3 of my series on astrophotography with filters. Last time I explained how the human eye sees in colour, using three different types of cone cells. We use one type for sensing red light, one for green light and one for blue light. The different channels are then recombined in our brains […]
This is part 2 of a series of blogs about filters and narrowband astrophotography. Bill explains how filters work, why you might use different filters and what a photo taken through a filter looks like. In the previous blog, I went into a bit of my own history: how from DSLR photography, I gradually moved […]
This is part 1 of a series of blogs about narrowband photography. In this introduction part, Bill talks about how – and why – he moved from taking astrophotographs with a plain DSLR to a monochrome CMOS camera with filters. It’s all about how you want the hobby to develop Astrophotographers aren’t normally wealthy people. […]
This guide is suitable for all telescope owners of Synta computerised go-to EQ mounts, such as Sky-Watcher and saxon. In a previous blog, I explained how to polar align a simple manual equatorial mount. However, the benefit of a computerised EQ mount is its much higher level of accuracy. It’s definitely worth the extra effort […]
Part two of the Celestron NexStar series. This guide is intended to help first time users and those who are experiencing difficulty with the Celestron SkyPortal (previously known as Celestron SkyQLink) Wifi module. Introduction In our previous blog we reviewed Celestron’s top-selling Celestron NexStar Evolution 8 Computerised Telescope. Now, this blog will go through the ins and […]
This blog shows you two different types of finderscopes. It describes what a finderscope is, how it’s useful, how it attaches to your main scope. Not all new astronomers know that they have to align the finderscope with the main scope. So most importantly, the blog shows you how to adjust your finderscope to help […]