Category Archives: User Guides and Tutorials

Telescope GOTO or not GOTO. That is the question

Often we get first time buyers looking for a telescope with GOTO as an important factor. This topic divides many people on either side. I am old fashioned in my ways, and think the view you get through the eyepiece … Continue reading

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Celestron Lenspen cleaning accessory 93575

The Celestron Lenspen is without doubt my personal favourite lens cleaner. The simple to use accessory comes with a brush at one side for getting the dust off, and a fluid free pad at the other side for removing grease … Continue reading

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Skywatcher dual axis motor drive for EQ3-2 20406

The 20406 skywatcher motor drive with dual axis is designed to fit the EQ3-2 mount. This is ideal for longer exposure imaging or continuous tracking for visual use. This makes it perfect for group observing when you do not want … Continue reading

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does edge of field quality matter with binoculars

Often in reviews we see comments about edge of field quality. This includes myself. So how important is sharpness on the outer view ?. With an example looking at a bird in the center of the view, the most important … Continue reading

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What is a telescope filter

When you look through your astronomical telescope at the night sky, telescope filters will help you see more detail. Filters come in many varieties to enhance viewing from light reduction, light pollution filters to different colours and ones that only … Continue reading

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North Lincs Astro meeting . February 2016

For the North Lincolnshire astronomy society meeting on Monday 1st Feb 2016 we had a workshop evening, with 3 different demonstrations going on at the same time. This gave the members a chance to mingle and chat at their own … Continue reading

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What are auto focus binoculars

Often you will hear the phrase or see in advertising the mention of auto focus binoculars. So what are auto focus binoculars ? I,m afraid to the best of my knowledge there is no such thing as auto focus. This … Continue reading

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Celestron Power Seeker 80 AZS. Testing prime focus photography

I have had a chance to test the prime focus performance of the Celestron powerseeker 80 AZ.. To connect a DSLR camera, you simply attach a t-ring to the telescope focuser..There is a t-thread on the scope, so no need … Continue reading

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Can you use a star diagonal on a Newtonian reflector telescope

A star diagonal is not recommended for use on a Newtonian reflector telescope. This is simply because there may not be enough inward travel to get infinity focus. You may be able to get around this by using a low … Continue reading

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Celestron Edge HD telescopes and aplanatic optics

Aberrations are defects in images produced by a telescope (or optical system). They are caused by limitations in the design and manufacture of the optics. Designers and optical factories strive to produce affordable telescopes that have as few aberrations as … Continue reading

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