Category Archives: User Guides and Tutorials

How to set up a Celestron Astromaster 130EQ Telescope

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What does IPD mean

When you look up binocular specs you may see something like “IPD 54~72mm”. So what does this mean ?. IPD stands for Inter Pupillary Distance. This is the distance in mm from the centre of one eye piece to the … Continue reading

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What is a Twist Eye Cup

An eye cup is an extended piece of rubber extending from each binocular eyepiece. With some models these fold down if you wish to wear glasses. However , this has its flaws. Continuous use can damage to cups, leave finger … Continue reading

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What is a Floatation Strap

A floatation strap looks similar to a normal binocular strap, but is made from material that will not only float in water, but will stop your binoculars sinking if dropped in water. It will not stop the binoculars from submerging, … Continue reading

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What is a Hide Clamp

A hide clamp is a single section support with a camera/spotting scope head. The heads are the same as used on many tripods, so some can be interchanged with tripods. For example an Opticron birdwatchers tripod and Opticron hide clamps use the … Continue reading

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What does Nitrogen Waterproof mean

With many binoculars, you will see Nitrogen Waterproof or Nitrogen Gas Filled. So what does this mean ?. Think of what happens in your car or house when its cold outside and warm inside. You get condensation on the inside … Continue reading

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What is a Mono Pod (monopod)

A Mono-pod is a single legged support with a standard thread at the top to accept cameras and spotting scopes. They can come as a single section, or up to 4-5 sections for adjusting height. For added flexibility some come … Continue reading

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What is a Light Pollution Filter

  A light pollution filter screws in to the inner thread of an astronomical telescope eyepiece. The lens coatings help block out street/house lights, yet allow light from emision Nebulae to get through. Unlike stars, emission nebulae give off light in … Continue reading

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What is a Barlow Lens

A barlow lens is an adapter that fits in between your telescope eyepiece and the eyepiece holder. This will increase the magnification by 2x 3x or even 5x depending on which one you purchase. For example, if you have a 10mm eyepiece … Continue reading

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What is a T-ring

A T-ring is a simple adapter that allows you to connect your SLR or DSLR camera to a spotting scope or Telescope. It will screw on to any T-adapter, eyepiece or other digi-scoping adapter with standard T-thread (M42x0.75 metric thread). With … Continue reading

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