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Posts tagged ‘lens tissue’

Cleaning Optics – How to do it.

So in our previous entry we talked about what not to do when cleaning sensitive optics such as telescope lenses and binoculars. Now it is time for a better explanation of how to properly clean those optical lenses. Note that everything mentioned here can be applied to binocular lenses, telescope lenses, and even camera lenses.

Before we discuss specific cleaning methods let me state the first rule of lens cleaning, similar to Hypocratic Oath:

DO NO HARM!

If your lenses are not dirty, don’t clean them for the sake of cleaning them.  If a tiny smudge is on your lens but isn’t showing any effect on viewing, just let it be. All too many lenses have been damaged or destroyed by unneeded cleaning.  So consider carefully before starting the cleaning process.

We are going to discuss two methods of cleaning optics: using a cleaner and lens tissue and using a Lens Cleaning Pen. Let’s start with the latter.

Method 1: Lens Cleaning Pen

Lens cleaning pens are sold under a variety of names but they mostly have the same features: A soft dusting brush and a flat cleaning end. The first thing you will do is brush the lens gently with the brush end.

Lenscleaning1

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Cleaning Optics, what not to do: Telescopes & Binoculars

So say you have a nice pair of binoculars or a good refracting telescope (or spotting scope). One day you are about to use it and you discover some kind of smear 102on the front lens.  Perhaps it was a droplet of water from the day you were viewing and a small rainstorm brewed up? Doesn’t matter, you need to clean that lens or otherwise your view will be very diminished. So you grab a tissue from the bathroom and some window cleaner and….

STOP

OK, let’s talk about glass and the things we put on it to see better. Glass is a fairly hard material but it can be scratched, but a greater concern for your nice binoculars is the coatings on the lenses. You might notice that purple/green/blue coloring in the reflection if you look at the lenses at an angle. These coating are very important to the binocular/telescope’s optical quality and you cannot just use anything to clean them.

Why?

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