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Phone Eyepiece Adapter So That The Eyes Look More Comfortable
Jul 05, 2017

Phone Eyepiece Adapter also has a use, that is, by observing the resolution of the standard plate, or a fine pattern of printed matter, you can qualitatively determine the resolution of the lens level, with the focal length of the lens at the same distance, the general can be a few meters away, , The corresponding observation distance should be doubled. Another purpose of this Phone Eyepiece Adapter is as a microscope, between 37 mm F2.8 lens and Phone Eyepiece Adapter plus 50 mm long loop, is a 45 times the microscope, the object and the object from the distance of about 2 cm, if used 58 mm F2 lens, magnification of 30-40 times, the object and the object from the distance of about 9 cm. If the length of the loop doubled, the magnification is doubled, but it can not be extended indefinitely, otherwise the field will be too dark. With this microscope to see is still just like to use it to observe the film effect is very good.

1. The Phone Eyepiece Adapter of the Phone Eyepiece Adapter is marked with the following markings: Phone Eyepiece Adapter type, magnification. For example, 10 × flat field Phone Eyepiece Adapter engraved with p10 ×; p that flat field Phone Eyepiece Adapter, 10 × for the magnification, the general Huy Gens Phone Eyepiece Adapter is not marked.

2. Magnification of Phone Eyepiece Adapter Phone Eyepiece Adapter magnification is specified. The purpose of the Phone Eyepiece Adapter is to magnify the objective lens (middle like) and then zoom in again, and the object into the eyes of the observer, in essence, the Phone Eyepiece Adapter is a magnifying glass. It is known that the resolution ability of a microscope is determined by the numerical aperture of the objective lens, and the Phone Eyepiece Adapter is only a magnifying effect. Therefore, for the objective lens can not tell the structure, Phone Eyepiece Adapter put big, still can not tell.

Because different series of optical design of different Phone Eyepiece Adapter, so can not mix.

Observation of the Phone Eyepiece Adapter in accordance with its focal length to distinguish its magnification, the longer the focal length of the Phone Eyepiece Adapter, the more the number of its magnification smaller, the greater the field of vision.

In general, more than 40 mm, known as low magnification Phone Eyepiece Adapter, suitable for observation nebula, clusters, comets and other low light, dim objects.

25 mm -12 mm, called mid-fold Phone Eyepiece Adapter, suitable for observation of the lunar surface, planets, binary stars and bright nebula.

12 mm -4 mm called high magnification Phone Eyepiece Adapter, suitable for observation of the moon surface pits, planets, double stars and so on.

For a variety of different objects, according to different objects to choose different focal length of the Phone Eyepiece Adapter, the general commercial telescope are attached with two or three Phone Eyepiece Adapters, divided into high and low (such as 12 mm, 6 mm, 25 mm) or , High times (eg 18mm, 6mm) equipped. It is recommended that if you have the opportunity to add another 40 mm telephoto dedicated low magnification Phone Eyepiece Adapter, they watch the nebula, the cluster effect is particularly good.

It is worth noting that the size of the ordinary Phone Eyepiece Adapter is 24.5 mm, and there are three kinds of "big head" Phone Eyepiece Adapter specifications are 31.7 mm, 36.4 mm, 50.8 mm, the diameter becomes larger Phone Eyepiece Adapter glass is also larger, Screen the same as the TV.





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