Ng70fs telescope instructions and owner’s manual manual part #: 284445-051909e printed in china please retain this manual for future reference..
A: lens hood / shade b: metal optical tube a b c d e m f g h i n j k l o c: 5 x 24 finderscope d: finderscope bracket e: 20-mm eyepiece f: 45º prism g: focus knob h: tilt handle i: tripod leg j: 3x barlow lens k: 4-mm eyepiece l: tripod leg locks m: horizontal adjustment lock n: tripod attachment pl...
I ntroduction congratulations on your purchase of a precision-crafted national geographic™ telescope. With proper care and handling of your telescope, you will enjoy the pleasure of looking at nature’s wondrous sights through the eye of this instrument for many years. The ng70fs has been designed to...
Column adjustment lock knob. Raise or lower the centre column. Re-tighten the centre column adjustment lock knob. (see fig. 1) (fig. 2) 9) loosen the small knob or screw on the side of the focus tube by turning it anti-clockwise. Remove the white plastic dust cover from the focus tube. Remove the tw...
F inderscope a lignment since a telescope has a narrow field of view by design, it can be challenging to locate a particular star or planet. For this reason the telescope is fitted with a low-power, wide- field miniature telescope called a finderscope. Always use your finderscope to locate the objec...
The level of magnification required depends on the object being observed. Optimal performance is obtained if the magnification is typically not more than approximately 30x for every 10-mm of objective lens diameter. Magnification of around 210x less is ideal for a telescope with a 70-mm diameter obj...
T he p lanets the planets, our solar system companions, range in size and substance from moon-size rocky bodies to giant gas balls, which could hold earth 1,000 times over. To find the planets, you will need information about their times of visibility. An astronomy magazine will give you the locatio...
4) as i look through my telescope, objects in the sky appear to move. Why is that? The constant rotation of the earth makes things appear to move. Lower-power eyepieces will reduce this effect of movement considerably and allow you to observe an object for a longer duration before you have to readju...
