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GEERTOP 90X Portable Astronomical Refractor Telescope, 360X50mm, For Kids Sky Star Gazing & Birds Watching
Product Details
MAGNIFICATION: 18X, 27X, 60X, 90X (6mm Eyepiece + Magnification = 60X; 6mm Eyepiece + Magnification with 1.5X Erecting Eyepiece = 90X; 20mm Eyepiece + Manification= 18X; 20mm Eyepiece + Manification with 1.5X Erecting Eyepiece = 27X)
REFRACTION TYPE/ FOCAL LENGTH: 360mm, Aperture: 50mm. Luminous: 0.139,Object lens focus:360mm. Theoretical resolution: 2,800 arc seconds, which is equivalent to 1,000 meters can be seen 1.357 cm apart two objects.
ALTITUDE-AZIMUTH MOUNTING. The telescope is equipped with an altitude-azimuth mounting, can be moved vertically (altitude) and horizontally (azimuth).
HIGH QUALITY OPTICAL GLASS LENS, metal optical tube, aluminum table top tripod & 3 eyepieces
IT IS A HIGH-POWERED TELESCOPE, suitable for entry-level amateur astronomers and children to explore land & sky!
It is a high-powered telescope, with good performance observation of celestial bodies, suitable for entry-level amateur astronomers and children. Different magnification eyepieces can make you free with observed at different distances and sizes objects . And the telescope as the viewing mirror, can be upright image fully. As long as you have enough imagination, there will be more interesting and practical usefulness.
WHICH MAGNIFICATION?- SELECTING THE CORRECT EYEPIECE The optimum magnification depends on what you are looking at. As a rule of thumb, the best image results from using a magnification, which is not more than 1.5X – 2.0X the diameter of the objective lens. For observation of moss heavenly bodies, a magnification of 75X – 100X can be achieved with a 50mm objective lens. A lower magnification should be used for the observation of the stars. This provides a wider field of view and simplifies aiming the telescope at the desired object. The maximum magnification should be used only for particularly clear objects such as the moon, which is relatively close to the Earth and very bright, permitting good resolution of details at high magnification.
ERECTING EYEPIECE The 1.5X Erecting Eyepiece not only increases the magnification of telescope but also correct the direction of the image. For example, a telescope, which has a magnification of 60X, will have a magnification of 90X when a 1.5X Erecting Eyepiece is used. Moreover, when the telescope is used to view landscope, the erecting eyepiece can straighten out the image.
Package: Main tube x 1 H20mm eyepiece x 1 H6mm eyepiece x 1 1.5X Erecting Eyepiece x 1 90 Zenith mirror x 1 33cm height Aluminum tripod x 1 Lens cloth x 1 Some of our Items have deliverycharges but if you purchase more than one item from us that is charged deliveryyou will only pay for one items postage the rest are FREE and will be shippedas a joint package.FeedbackFeedback is very important to us soplease leave positive feedback on the goods you purchase. We endeavour toprovide the best goods and service but from time to time the odd item doesntreach our high expectation, on the rare occasion that this may happen pleasegive us the opportunity to correct the situation. Contact us before you leavenegative feedback, give us the chance to put things right and uphold ourfantastic feedback rating OUR MISSION: To provide best valueproducts with professional services and have a trust based relationship withour valued customers. We are a family run clearinghouse for major supplierstherefore all our items are sent directly from the supplier. On occasions wemay use a 3rd party to supply our customers orders, it is likely that the 3rd partieslogo may be on the packaging. By placing an order, you are agreeing that yourdelivery information may be shared with our supplier to fulfill your order. Ifthere is something you would like, that we do not appear to currently stock, thenplease get in touch and we may be able to source it for you.Many Thanks for having a look at our list!Feel free to search and follow other items wesell, and if you have any queries at all dont hesitate to get in touch – We’revery happy to have a chat and answer any queries.Thanks again.
Category: Cameras and Photography:Telescopes and Binoculars:Telescopes
Location: Gosport
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