This issue believe that many buyers of friends want to know. The answer is infinity, the telescope can see how far the buyers friends feel that way, such as using a telescopes to see objects 7 times, observe the effect objects shipped to 700 meters and 100 meters away from the object that is observed with the naked eye is similar to the effect of: namely by observing the distance (700 m) divided by the magnification (7 times)! Binoculars and distance and target size, weather, and more.

2. clarity how the
clarity and size of the target objects are closely related, it is fine, within 80 metres of ground the size of a coin, see license plates within 300 metres, 1000 metres to see large billboards within text.

3. can you see at night? Night vision?
Telescope is an optical instrument, is not watching, Oh, in the all black environment. This is a low light level night vision binoculars, characterized by external Dim light (lights/Moonlight/Starlight concert lights/streetlights/etc) more clearly see the observation target.

4. Why can't I see will make a Halo?
Generally several reasons:
1) up to a right eye diopter wheel does not adjust in good condition, causing image blur.
2) exit pupil distance is adjusted, eyes too close to the eyepieces or too far from the eyepiece.
3) first-time users suddenly unable to adapt the magnification of the telescope, and the moving telescope observation too often, hands shaking, suggest that you take some time to watch at this time, adapt to 2-3 days after normal use, Oh.

Telescope of correctly using

you got telescope Hou, eyes on with telescope hole small of that end, select a 50 m yiwai of target (as not across with Windows observation), according to you two eye of spacing to adjustment telescope two only eyepiece of distance, keep left, and right eye see of picture collection for a round depending on field, then turned telescope of in the adjustable handwheel (or points adjustable products of depending on degrees regulation handwheel), until left eye can see target, again minor turned right eyepiece, Make clear in the right eye sees the target so far.  (Note: only the Central focusing wheel and right eyepieces all telescope rotates, Zuo Mu cannot be transferred)

How to properly adjust the focal length.

Using who in alignment target Shi, pulls the mirror body, according to themselves of binocular Hitomi from in (56mm~74mm) between select for of distance, with right hand middle finger gently pulled moving regulation round, until object clear on said has regulation in place has, but for different of people of observation vision different, is song photometric of different, around eye may exists vision difference, at this time using in the adjustable products Shi should first observation left of object, stay observation objects adjustable to clear Hou again adjustment right eyepiece handwheel, Make the eyes see object to merging are clear (see Figure 1), then looking at different features of distance by simply adjusting the Centre focusing mechanism can achieve satisfactory observation results.  

Maintenance considerations in the mirror

telescopes for precision optical observation instruments, and custody should be guided by the following principles: use:
1. do not use this product strong light sources such as direct observation of the Sun, so as not to result in permanent eye injury.  
2. turn the handwheel do not force too much, when turning to the limit position can no longer be violently screwed, so as not to damage the eyepiece set.
3. moving the telescope should handle with care, avoiding too much force collision or squeezed, carried high vibration should be avoided.
4. the lens is the most important in the whole telescope system is also the most susceptible to damage parts. To avoid affecting the accuracy and performance, do not disassemble the lens, wipe as little as possible.
5. When cleaning the glass surface with a clean soft lens cloth or silk dust Warbled, agent gently wipe the lens. Is strictly prohibited, tarp, paper, wipe with your finger, so as to avoid scratching the surface below. Napkins should be kept clean, put the binoculars backpack alternative.
6. when found fingerprints on a mirror, should be clean, corrosion or fingerprint will work but left a permanent mark. After more dust on the mirrors should also be clean, dust blowing with a hair-ball (not blowing through your mouth) and ethanol (alcohol) dropping in on a clean gauze, clockwise or counterclockwise from the Center to the mirror the mirror edge wipe (wipe in one direction as much as possible).
7. snow day, windy weather and high humidity (more than 85%) the weather do not use telescopes (waterproofing products excepted). Storage:
1. when not in use, to adjust to minimum volume State, depending on the wheel size to zero, wear a dust cover, then into the mirror.
2. store the appliance for a long time should choose Environment ventilated, dry place, it is recommended that a desiccant. Avoid storage in laboratories or corrosive chemicals.
3. do not put the telescope in place, away from direct sunlight to avoid fires.
4. when the product is stored away from the compass magnetic substance to avoid a compass malfunction or reduced sensitivity.
5. product with a built-in battery, and unused for long periods, remove the batteries to avoid leakage and cause corrosion, failure or fire. Repair:
If the telescope is faulty, do not disassemble to repair, sent to a professional repair shop or send it to us for your professional handling.