Nikula-strong Az 30070 Hd Professional Astronomical Telescope Gate diameter: 70mm (2.4 ??) Focal length: 300mm. f/4 Mirror: 90 ° Warp and weft and aluminum tripod Maximum height: 38 cm Standard 0.965 inch accessory includes: Eyepieces: H6mm, H20mm 3 times Barov mirror 1.5 times mirror Maximum magnification of this model: 150 times (objective lens focal length/lens focal length * several times Barov multiple = maximum magnification) Caliber is the most important indicator to choose a telescope, and the caliber is proportional to clarity and price. A. About the function: This can be used to look at the ring island of the moon with a gross weight of about 2 kg. Tripod height: 38 CM. B. About configuration: Focal length 300mm, diameter 70mm, with 2 eyepieces: H6 (for day tracking) and H20 (for moon tracking at night), plus 3 times Barov mirror and 1.5x mirror and mirror. Moon mirror: because there is a lot of reflected light interference when observing the full moon, using the moon mirror can eliminate these interference and make the moon's surface clearer. When using, please screw the lunar mirror into the thread on the bottom of the lens, then connect the lens mirror to the zenith mirror. C. About multiples: Separate eyepieces: H6mm, multiples of h20mm are: 300/6 = 50 times, 300/20 = 15 times. If you choose Barov mirror 3 times, multiple 50X3 = 150 times, 15X3 = 45 times

plus 1.5 times mirror, imaging positive, multiples: 50X1.5 = 75 times, 15X1.5 = 22.5 times. That is: minimum magnification: 15 times, maximum magnification: 150 times. D. Calculation formula: Lens focal length/lens focal length * several times Barov multiple = maximum magnification Lens focal length/lens focal length = magnification E. Installation sequence: Tripod is supported first. Then install the lens barrel. Once the lens barrel is fixed, a finder mirror (initially used to locate the target object) is mounted on the lens barrel and then the lens is added (lens 2 is selected 1). After finding the large target, debug it with different eyepieces. Note: Be patient and patient for the first time! The probability of bad astronomy is very, very small, not to mention the fact that every telescope we've checked before is strictly controlled. F. Of course, multiple is not single, but mainly depends on comprehensive factors such as caliber and focal length. For example, if the windows of the house are large, the light will be naturally good and the view will be clear. The same is true. G. When using 3x Barov mirrors, first install the Barov mirror and then install the lenses. (With the Barov mirror, you need to remove the cover from the lens-mounted device.) H. Note: 2 eyepieces (H6mm, H20mm) can only be selected for one installation at a time. Two pairs of magnifying mirrors (3 times Barov mirror 1.5 times positive mirror) can only be selected at the same time. I. of course,