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When you enter into any new area of science, you almost always find
yourself with a baffling new language of technical terms to learn before you can converse with the experts. This is certainly true in astronomy both in terms of terms that refer to the cosmos and terms that describe the tools of the trade, the most prevalent being the telescope. So to get us off of first base, let’s define some of the key terms that pertain to telescopes to help you be able to talk to them more intelligently. The first area of specialization in telescopes has to do with the types of telescopes people use. The three designs of telescopes that most people use are the Refractor, the Reflector and the Schmidt Cassegrain telescope. The refractor telescope uses a convex lens to focus the light on the eyepiece. The reflector telescope has a concave lens which means it bends in. It uses mirrors to focus the image that you eventually see. The Schmidt Cassegrain telescope uses an involved system of mirrors to capture the image you want to see. A binocular telescope uses a set of telescopes mounted and synchronized so your view of the sky is 3-D. Beyond the basic types, other terms refer to parts of the telescope or to the science behind how telescopes work. Collimation is a term for how well tuned the telescope is to give you a good clear image of what you are looking at. You want your telescope to have good collimation so you are not getting a false image of the celestial body. Aperture is a fancy word for how big the lens of your telescope is. But it’s an important word because the aperture of the lens is the key to how powerful your telescope is. Magnification has nothing to do with it, its all in the aperture.
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Anyone who knows me has invariably been subject to a spiel about how much I love
Comment LinkClaudia Winkleman. In part, it's because she's so silly,
and in part, it's because I'm a huge fan of
everything she presents, from Strictly to The Traitors.
But even more than any of that, it's because I'm obsessed with everything
she wears. I've spent a fortune copying her exact outfits, from her Sister Jane heart cutout dress to a bedazzled Nadine Merabi
blazer that I definitely don't go anywhere fancy enough to wear.
Since 2005, Claudia has worked with stylist
Sinead McKeefry to perfect her signature style.
I'd describe it as soft goth: lots of black, velvet and chunky knits,
with a fair few sequins and prints (particularly tartan) thrown in. I'm not
alone in my reverence: there are entire Instagram
accounts dedicated to tracking down the presenter's outfits.
But while they offer incredibly useful style inspo, two issues arise
repeatedly: Claudia's clothes are usually hugely expensive or sold out (or both).
So when the Strictly host stepped out in a typically preppy black velvet mini dress on Sunday, you'd be forgiven for
assuming it was by some top-end designer. Well, you'd be wrong.
The mini dress actually came courtesy of one of our favourite high
street brands, Albaray - and you can pick it up for less than £100.
The dress is made from plush fabric with contrast satin detailing.
The velvet makes it a little festive, perfect for celebratory bashes over
the next few months, particularly when paired with white stilettos à la
Claud. But it could be just as easily dressed down with white trainers or ballet
flats and a trench for a chic office outfit, so you'll
certainly get your wear out of it.
Like all of Albaray's products, it's ethically made using responsible fabric and sent via
a carbon-neutral shipping method, so you can feel good about the dress's eco-credentials as well as how it looks.
It's currently in stock in a few sizes online (and in certain John Lewis concessions) but like most things Claudia wears, it won't stick around long.
Now excuse me while I go and add to cart.
Collar and Cuff Velvet Dress, £99, Albaray
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