If you want an astronomical telescope, I would like to consult about the astronomical telescope

To be honest, with our current capital, we can't afford this kind of telescope at all, so it's no wonder that the upstairs says so.

First of all, it is necessary to see that it is a round face (it must be spherical; A point can be seen, needless to say), the caliber should be at least 130mm, and it should be of good quality, such as Japanese Takahashi, prestige, virtue, etc., and it must also be APO or large-caliber parabolic bull anti (usually spherical) or telephoto than Maca, these are at least 5000 yuan, and the increase with the increase in caliber is more amazing. Takahashi APO of 150mm or more is at least 10,000.

Secondly, to see some more subtle structures, such as the atmosphere, polar ice caps, storms, etc. (these areas are very large), you need a diameter of more than 250mm, in order to see more clearly similar to some landforms and atmospheric activity trajectory and other phenomena, this caliber refraction is impossible, the ox will be very heavy, unstable, basically Shika and Maca, take the relatively popular Xingtrang, its caliber Shika to more than 30,000.

Finally, as you said, the crater, the one above can only see the largest Olympia volcano on Mars and Mariner's Valley, if you want a crater, the caliber is 500. Not to mention that this configuration can't be bought, there is nothing to sell on the market; Those people either do it themselves or directly ask the company to customize it. Either you have money, or you have the perseverance and time, and you are a professional astronomer.

Let's forget it.

Don't think that Martian craters are as easy to see as the moon.

It's so impractical, and it's nice to watch something else.

In addition, even if you buy it, there are sandstorms on it every day, and you can hardly see the crater.

That's OK, you can see some big ones with a diameter of 100mm or more, as well as some radioactive stripes next to it, and the caliber is larger and you can see the "hill" in the middle of the crater, **not expensive, this only requires *** on the line, cheap ones such as domestic Boguan Daguan, slightly better ones such as foreign Xingtrang, are our black suitable choices, 100mm, good ones are about 3000, general 2000, provided that it is not APO (it has to add about 3000), There is also non-motorized tracking (which also costs 3000 more). Just buy a normal refraction, reflection and refraction are not necessary (this will be used later).

Boguan Astronomical Telescope Trailblazer 60 700

Features Introduction: Diameter 60mm, focal length 700mm, Ground Flat U-shaped bracket with fine adjustment rod, suitable for beginners.

Astronomical observations: lunar craters, waxing and waning of Venus, moons and streaks of Jupiter, Saturn's rings, and the polar crown of Mars (visible at opposition).

Venus transiting (visible during transit), sunspots (not directly visually observed!) Solar filters or self-made projection observations must be added).

Main parameters: Product **: Trailblazer 60 700

Optical system: refractive.

Primary mirror aperture (mm): 60

Focal length (mm): 700

Focal Ratio: Resolution (*).

Ultimate Magnitude: Light Gathering Power: 73x

Primary mirror weight: Primary mirror length: 72cm

Equatorial mount: U-shaped.

Tripod: TP4

Gross weight (kg): 3

Code: 110213

Full set of product configurations: 60 700 main tubes; Eyepiece (: SR4,,H20; TP4+U-shaped bracket; 90 degrees (zenith mirror;

5x24 finderscope (with cross-reticles); 3x extenders; Orthographic mirrors; a special plastic box; "Astronomical Telescope Observation Guide Operator.

Instruction manual"; moon filters; Rotating Constellation Disk; Desiccant; Instructions; Certificate.

**：570

This is very good, I usually buy this.

The Hubble telescope is enough, ** more than 40 billion.

Not to ironize you, it's really hard to see on Mars.

The moon is much easier, so what is the jade rabbit osmanthus tree or something There are many mountain ranges, including craters, and a slightly better telescope can see it very clearly.

The crater of the moon can be seen with 7 * 50 binoculars, and the details can be seen with 80 caliber Tianwang, which is about 1k5 (including accessories), it is troublesome to see Mars, basically a telescope within 2k can also see the round surface of Mars, and it is impossible for you to use the crater at home.

There are not many craters on Mars, plus Mars is far away from the earth, and there is a thin atmosphere to protect it, so it is not easy to see the surface of Mars, and Hubble can't shoot clearly**, the Mars ** that I have obtained at present is basically taken by Mars probes and Mars rovers at close range, so the landlord should not expect to buy such a telescope, and the general professional astronomical telescope can see a large circular surface and the polar crown of the poles is very good.

In favor of the Quantum Ocean claim!

Despise ivan6209, the guy who only satirizes people!

To give you a direct answer, the astronomical telescope buys Xingtran 80EQ, ** about 700 800 yuan.

Boguan 70900 can also be, only slightly worse than Xingtron 80EQ, belonging to the same grade, ** is also slightly cheaper.

Both of these are astronomical scopes commonly used by novices in astronomy hobbies.

The aperture of a telescope is much more important than the multiple, and the larger the aperture, the clearer, not the greater the multiple. The ** of the telescope is also proportional to the aperture, not a multiple.

For novices, it is also necessary to have a binocular, binoculars, Boguan "Hunter" 7 50 is the most cost-effective, about 300 yuan. If you don't have a bad money, buy a "Black Hawk" 7 50, about 2400 yuan, better.

Buy another book called "Astronomy Amateur's Handbook", 26 yuan. A must-have for almost every astronomy enthusiast.

These are sold on the ** Internet, find a reputable seller to buy.

These two astronomical mirrors have no problem seeing the planets in the solar system, of course, you need a certain amount of astronomical knowledge to see clearly. Binoculars are used to look for stars, look at the deep sky of the universe, see nebulae, galaxies, etc.

It is difficult to have a recommended telescope below 500, the cost performance is not high, you will regret it if you buy it, and you can save slowly if you don't have enough money.

The first floor said well, save a little money 790 to sell an 80EQ, is the first choice for beginners, the cost performance is also good, the technology is used properly, you can see a lot of things, it is the legendary "magic mirror", go to the second-hand equipment area on the Shepherd Astronomical Forum to Taotao, maybe you can get 9 into a new 80EQ within 500.

The small-caliber ones are boring, I'm planning to buy a 300-caliber one, one or two thousand, and slowly make it up.

Generally, the entry point is refractive, and the refractor is suitable for general observation and telephoto lenses. It can be said that the lowest end is the refractor, and the highest level is also the refractor. Because refractive types are prone to chromatic aberration, it is necessary to have high requirements for both the material and the coating of the lens in order to overcome the chromatic aberration.

If you want to see the nebula, it is best to use Newton (reflective type), this objective lens can be made very large, the focal length is not too long, the minimum aperture is more than 100 mm, the amount of light transmission is large, the cost of the lens barrel is relatively low, more than 700 are available, suitable for self-made, but the maintenance is more troublesome, and the correction is also a bit complicated. The low-end is a spherical lens, which will have a coma (** clear edges will be tailed and twisted like a comet), and the high-end ones use parabolic objectives, generally more than 1500. There is a disadvantage of the reflective type, the maintenance and maintenance are more troublesome, often to the optical axis, and the primary mirror is in direct contact with the air, it is easy to oxidize, after a few years to re-coat, if not the performance will decline.

Aperture determines the resolution and transparency, the limit multiple of the general telescope is 2 times the number of millimeters of aperture, if a toy-level astronomical telescope 60 mm aperture is nominally more than 600 times is definitely a lie, although the formula of dividing the focal length of the eyepiece by the objective lens and multiplying it by the extender can be more than 600 times, but at this time the picture is already very blurry and dim, and the clarity is not visible at all, and the stability of the telescope is also related to the stability of the telescope when used, if the multiple is too high to hold unstable, the impact of seeing is definitely not clear. Generally, the hand-held binoculars should not exceed 12 times, and if the astronomical telescope exceeds 200 times, the requirements for the shelf are also very high. If you look at celestial bodies or scenery at infinity, it is also related to the tranquility and transparency of the air, especially when it is high.

Because of the relationship between the rotation of the earth, the star will make a circular motion in the sky with the North Star as the center of the circle, if you will see this movement for a long time or high times, this requires the telescope to follow the star to move, so you need to use the equatorial mount to follow. The theodolite only has two axes rotating, the same as the ordinary photographic tripod gimbal, so it can't do circular motion, even if it automatically follows the kind of one, it can only be visually seen and not photographed, because even if it has been following the nebula, it will rotate in the field of view, and the equatorial mount must be used for shooting.

The general telescope can see the lunar crater, look at Jupiter to see the stripes inside, 300 times to see, if you just look at the small moons next to it can be more than 20 times Mars is not easy to see, Venus can see the profit and loss with it, Saturn to see the rings is also hundreds of times to see.

Other stars are only a point even if you use a telescope of several times to see them, and it is basically difficult to see beautiful nebulae with the naked eye, and those that need to be photographed with a camera **10 minutes with high-precision equatorial mount tracking. This requires a certain amount of technology, time, a good environment and weather, plus a high-speed computer and advanced software to post-process to get a beautiful nebula**.

You're so stingy, so many questions and no 1 point.

Before you buy a telescope, it is recommended to buy some popular science books about astronomy, and then spend a year figuring out the representative constellations of the four seasons of spring, summer, autumn and winter. Then consider investing in telescopes. Without this knowledge, you will probably not use the telescope more than three times.

Astronomical telescopes within 1,000 blocks basically can't see anything.

You can choose Boguan 70900 or 80900A, these two are for beginners, cost-effective, the operation is relatively simple, if you don't know the product, you can ask me!