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F30070 15x/150x Refractive Outdoor Monocular Astronomical Telescope With Portable Tripod Spotting Scope Silver Color Feature:
– Model: F30070
– Aperture: 70mm (2.4 inch)
– Focal Length: 300mm f/4
– Oblique Mirror: 90 degrees
– Warp / Weft Machine and Aluminum Tripod
– The Most Highly: 38cm
Standard 0.965 inch attachment contains:
– Eyepiece: H6mm, H20mm
– 3X the Barlow lens
– 1.5X positive lens
Note: This maximum magnification: 150X (lens focal length / eyepiece focal length x Barlow multiplier = maximum magnification)
About Configuration:
– Moon Filter: Because there is a lot of reflected light interfering our observation of full moon, so we can use the moon filter to avoid the interference, and then the moon’s surface will be seen more clearly.
– Please screw the moon filter into the threaded of eyepiece lens’ lower part, and then connect the eyepiece lens with zenith lens.
About Multiples:
– 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
The formula:
– Objective lens focal length / eyepiece focal length x Barlow multiplier = maximum magnification
– Objective lens focal length / eyepiece focal length = magnification
Installation sequence:
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. Type: Telescopes
For: Astronomy
Material: Optical glass
Color: SilverPackage 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
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 Contents: 1 x Astronomical Telescope, 2 x Eyepiece, 1 x Tripod, 2 x Barlow Lens, 1 x Moon Filter, 1 x English User Manual
About Shipping:
We will send out the order in 1-3 working days, and it needs almost 11-35 working days from China to you.As you know, the delivery time is depend on the shipping company, the air line, the custom and the local post office, so we are not able to control it accurately.If the parcel has not arrived in expected time, please feel free to contact us, we will track it and handle it with you. Russian customers please fulfill your full name(normally contain three parts) in your address so that you could receive the item.
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Category: Cameras and Photography:Telescopes and Binoculars:Telescopes
Location: Beijing
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