Who has studied astronomical telescopes??? I need help

If you want me to say that you undoubtedly prefer the Syntron 90EQ at this price. Now it sells for more than 1,000 yuan online. It can be said that the price-performance ratio is unbeatable.

Even among miscellaneous astronomical telescopes, it is difficult to find a 90mm aperture with an equatorial mount, which sells for a thousand pieces. What's more, Xingtron is the world's most famous astronomical telescope brand. The American Astronomical Society's event was put on the White House lawn to show Obama the Cintron.

The most important indicator of an astronomical telescope is the aperture of the objective. You go and see what the 1200 yuan mentioned upstairs can the pioneer have a 90mm caliber? That's probably only 70mm, right?

90mm has 65% higher transmission and resolution than 70mm! If he saw this, he would probably regret it.

Model: Centramp Astronomical Telescope C8-NGT Newton-reflective type.

Price: 1530 yuan.

Optical system: refractive.

Caliber: 90mm

Focal length: 1000mm

Focal ratio: eyepiece 1:20mm

Magnification: 50x

Eyepiece 2: 10mm

Magnification: 100x

Bracket: CG-3

Optical coating: multi-layer coating.

Total weight:

1. Galileo. Galileo made a triple telescope using the telescope making method. It was later improved to magnify the telescope 20 times at once.

He used it to observe the stars, and he could actually observe the round surface of Jupiter and see the uneven craters on the moon. In 1610, he used a 30x magnification telescope to observe the four moons of Jupiter and saw the change in the circle of Venus. It is precisely because Galileo Galilei improved the performance of the telescope, which was used to observe celestial bodies such as the stars, the moon, Venus, and the sun, and published the results for the first time, that it is precisely he who invented the astronomical telescope.

2. Astronomical telescopes are important tools for observing celestial bodies. It is composed of a primary mirror, a warp and weft table, and a hand controller. It can be very high, and it is easy to find and understand celestial objects.

The light-gathering capacity of a telescope increases with the increase of aperture, and the stronger the light-gathering capacity of the telescope, the thinner and farther the celestial objects can be seen, which is actually the ability to see the earlier universe. The development of astrophysics requires telescopes with larger apertures. Structure:

Primary tube, finderscope, eyepiece, theoweft stage, tripod and tripod, equatorial mount control box and power supply.

I rarely play now. I used to love it. First of all, in terms of type, there are three classification methods, 1 focal length 2 imaging types 3 kinds**.

It takes a long time to see nebulae, etc., so if the focal length is too large, the field of view is too small, ** is insufficient, therefore, to see nebulae is almost always large-caliber and small focal length, generally 400 mm is enough, of course, observatories or self-made observatories are not considered. You don't need a large focal length to see a larger moon.

I think mine is 1000 or 1600. I don't remember. Look at Saturn, Jupiter, etc.

Mine is hard. You can see it, but it's small. Just double it.

In short, the caliber is fair. Bad optics? The size of the caliber is not important, so the caliber is one of the main limiting factors.

The types I know are telescopes (monocular, convex and concave), astronomical telescopes (Galilean type, biconvex lenses), Newtonian reflective astronomical telescopes (1 concave and 1 convex lens, referred to as bull pairs), radio telescopes (national level, I don't think personally, this is not a personal game at all).

Generally hold a small telescope, astronomical telescope aperture is large, the largest observatory, do not think. Cow, the small is big, such as 150, 200, etc., the cow is small, the cow because it is reflection and not refraction, so you can make it big, because the concave mirror cannot be an optical lens, in principle, as long as it is concave, you can apply a reflective film.

Because of the need for refraction to build larger, more standard glass lenses, it is more expensive, from hundreds to tens of thousands, hundreds of thousands, or even more expensive (the general observatory is m, not the average person plays, because it is a system), and it is relatively cheaper, it is impossible to consider, not too much. The gods of the forum are basically assembled by themselves, and there are even convex lenses for grinding rice by themselves, hahahahaha. To sum up, at the beginning, I wanted to soak in the forum, see more understanding, learn more, don't buy blind products, cheap 90 and 1k, expensive, borderless.

Generally speaking, with amateur astronomical telescopes, we can see some celestial objects with large traces, and we can effectively appreciate them; If you want to choose a telescope that suits you, you must choose it effectively according to its characteristics and your own life needs.

Using an amateur astronomical telescope, it is possible to see the stars in the sky and the ethereal rivers of heaven, as well as the rings on Saturn and the surface of the Moon; You can choose your own telescope according to your financial base and your preferences.

You can go to many celestial bodies, you can go to some nebulae and galaxies that cannot be observed with the naked eye, and buy them according to your needs and what you want to observe.