Monocular Professional Space Astronomical Telescope Complete - Astronomy A+++
$4.99 to United Kingdom
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F30070 Monocular Professional Space Astronomic Telescope with Tripod
- Equipped with eyepiece: H6mm, H20mm, multiples are 300/6 = 50X, 300/20 = 15X
- If choose 3X Barlow lens together, multiples are 50 x 3 = 150X, 15 x 3 = 45X
- Plus 1.5X the positive lens again, multiples are 50 x 1.5 = 75X, 15 x 1.5 = 22.5X
- Objective lens focal length / eyepiece focal length x Barlow multiplier = maximum magnification
- Objective lens focal length / eyepiece focal length = magnification
1. Put up tripod, then attach the lens tube.
2. After the tube is fixed, install the finderscope (for preliminary search of the target object), then install the eyepiece (choose one from the two).
3. After find out the big goal, then debug with different eyepieces.
Note: 1. Multiples of course are not the only, and it depends on the combination of factors aperture and focal length. (For example, if the window is big, the natural light is good, and the view is clear.)
2. When use 3X Barlow lens, installed Barlow lens first, and then install the eyepiece. ( When install the Barlow lens, we need to move out the lid on the installation device of eyepiece.)
3. We just can choose one eyepiece to install at the same time, so does the Barlow lens.
Material: Optical glass
Package size (L x W x H): 46.50 x 22.00 x 11.50 cm / 18.31 x 8.66 x 4.53 inches
Package weight: 1.701 kg
Product size (L x W x H): 31.50 x 10.50 x 10.50 cm / 12.4 x 4.13 x 4.13 inches
Product weight: 1.643 kg
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- Item Location
- CH42 7JT, Cheshire, United Kingdom
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