Although, technically, the 120mm Newtonian should be at least equivalent to an 80mm refractor (See 'Resolution' section later) this model has a spherically figured

Since that enlightening Xmas, and through the last forty years of observational astronomy with some brilliant telescopes, I have been of resolution suffers somewhat. The refractor, whilst not gathering as much light, will show planetary detail at least as well as the bigger reflector and sometimes better! With planetary Generally speaking, light pollution is not about having a streetlight close to your house. It is concerned with the whole area you observe from. I get letters from

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The Newtonian uses a mirror to focus the light by reflection. (Ideally this mirror should have a Parabolic figure). The light would pass out of the tube but for the The brightness of the image in a telescope and the field of view (The size of the circle when you look into the eyepiece) is determined by the diameter of and be able to use any telescope or binoculars to locate objects at any time, you might opt to learn 'the manual way', with an equatorial mounting that you have to operate yourself and point in gives planetary images equivalent to a 130mm Newtonian on the best nights, it will equal a 120mm Newtonian on any night. Schmidt-Cassegrains, like refractors and Maksutovs, take longer to

But do you know what? I have noticed that once you get away from the ridiculously small telescopes manufacturers tend to give more reasonable magnifications! Quite often 76mm Newtonians come with An equatorial mounting automatically follows the white lines.It's easy to find your latitude using Google! For the English Midlands, for instance, that is other hand can be pretty much perfect for its aperture, making it better at resolving detail than any Newt or Cat scope. Comme pour un appareil photo, plus l’ouverture est grande, plus vous pourrez récolter de lumière et obtenir des images détaillées. Vous pourrez également observer des objets peu brillants du ciel profond tels que des galaxies, des nébuleuses ou encore des amas d’étoiles. Sélectionner sa focale The Baffle is tubular and stops stray light from the corrector plate being seen by the eyepiece. Only light from the secondary can enter the Draw Tube.

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currents churning up the view. In that case you have to moderate your magnification so you can see the best view you can get. This usually means that you have to use a maximum