How to choose an astronomical telescope, how to choose an astronomical telescope

1. The eyepiece should be bought with a high-grade one.

When buying an astronomical telescope, you should have 2-3 eyepieces. The eyepiece of a popular astronomical telescope is generally a Huygens eyepiece or a modified version of it made of two lenses. If you don't have a very good eyepiece, even if you use a very advanced objective, the results will not be very good.

Therefore, when buying eyepieces, you should buy high-grade eyepieces as much as possible within the scope of economic conditions.

There are various focal lengths of eyepieces, such as 4mm, 5mm, 6mm, 7mm, 8mm, and 9mm. In general, there are three types: low magnification, medium magnification, and high magnification. If it is a small-aperture astronomical telescope, the low magnification should be 20 40 times, the medium magnification should be 50 80 times, and the high magnification should be about 100 150 times.

2. The caliber of the finderscope should be larger.

The magnification of the small astronomical telescope finder is generally 5 12 times, and the actual field of view is about 6 14 degrees. The performance of the star finder greatly affects the observation ability of the astronomical telescope. The diameter of the finderscope should be as large as possible, preferably 30 50mm.

In addition, the role of the reticle is also important for the finderscope. When purchasing an astronomical telescope, you should carefully check that the finderscope does not come with a reticle device.

3. Choose a sturdy tripod.

If the optical performance of the astronomical telescope is very high, and there is no good tripod to support the instrument, its value will also be greatly reduced. Just imagine, how can a tripod that crumbles at the slightest wind give full play to the performance of the instrument. Because the field of view of an astronomical telescope is very small, especially at high magnification, the image will run out of view if there is a slight vibration, so it is difficult to see the object clearly.

So, when choosing a telescope, you should choose a sturdy tripod along with it.

4. Equatorial ceremonial stands and longitude and weft stands.

There are two types of support frames for astronomical telescopes: longitude and latitude stands and equatorial ceremonial stands. A bracket in which the lens tube can be rotated horizontally and vertically is called a warp and weft frame. The equatorial ceremonial stand is a bracket that rotates the lens barrel around the polar axis (right ascension axis) and around an axis perpendicular to the polar axis (declination axis), and each has its own strengths.

The structure of the longitude and latitude bracket of the rock brigade is simpler, lightweight, and dexterous compared to the equatorial ritual bracket, and the lens barrel can be rotated freely up and down, left and right, and even people who are not familiar with it can easily use this water support stand to face any starry sky position. It's a little tricky that in order to keep track of the stars that are out of view, you have to constantly move the instrument up, down, left and right. I'm afraid it won't feel so free for the observer.

The advantage of the equatorial ceremonial stand is that it can track the stars that come into view, as the mirror barrel pair rotates around the polar axis. It is also possible to install a camera to take spot shots of the stars in the starry sky. In order to take advantage of the advantages of the equatorial mount, the polar axis should be pointed squarely at the North Star.

In this way, even for unskilled people, it will not be too difficult to operate.

How to choose a pro for astronomical telescopes! Hello, glad to answer for you. Here's how:

1.Determine the local weather conditions in a year, the number of observable days is two weeks per month, and the city's light pollution is not serious, and then consider whether to buy an astronomical telescope. 2.

It depends on the economic strength in hand, and consider it comprehensively. 3.There are two kinds of telescopes, direct and reflective, the direct observation of a single star is the best, the requirements for the lens are not particularly high, and the volume is long; Reflective observation of a sky area is best and has a short volume, but there is a concave mirror inside that needs to be coated regularly, otherwise the image will not be clear.

4.The clarity of the telescope is related to the diameter of the objective lens, the larger the objective lens, the clearer the image, so it is advisable to choose a larger diameter, and it is recommended that the diameter of more than 200mm (** will be more expensive) 5Comprehensive suggestion, ** in more than 5,000, objective lens more than 150, direct type, base frame to choose a little better.

Don't be obsessed with magnification, as long as it's astronomical. If you have a mine at home, you can consider an objective lens of about 300, which is estimated to be about 2 30,000 professional grade. Hope mine can help you!

Do you have any other questions?