The correct method and maintenance method of astronomical Telescope

1. Install a astronomical Telescope according to the instructions.

2. Regarding the focus of the Telescope and the calibration of the cross -line mirror

Loose two fastening screws on the eyepiece.Take out the low -duty mirror and put it on the eyepiece to pick up the cylinder, and then tighten the screw.The adjustment of the focusing knob can obtain a fuzzy image of an object A in the distance, and then slowly adjust the coke knob back and forth until the object image is clear.The Telescope has accurately adjusted the focal length, and now it can be observed with a star -seeking mirror.If the astrology mirror is not at the focal length, turn the eye mirror until a clear scene appears.When the object of object A you see on the Telescope is not in the center of the star mirrors, according to the following method: tighten or release the screw on the star -seeking mirror support, so that the star -seeking mirror up and down, left and right workers, left and right workers, left and right workers, left and right workMove obliquely.When the object of the object A appears in the center of the cross line, your star -seeking mirror is ready, and finally the three screws are tightened.Then replace the low -power mirror with a high -power mirror and repeat the above program.If the center of the image observed under the maximum mirror and the cross -line center of the star -seeking mirror, your star -seeking mirror is adjusted.Now you can quickly find the celestial body you want to observe.In extremely special circumstances, star -seeking mirrors may need to be adjusted.

3. precautions

A. Under any circumstances, first look for objects with a star -seeking mirror, because the perspective of the star -seeking mirror is greater, which can greatly accelerate your coarse tone.

B. Under normal circumstances, first install a low multiplier mirror to gradually increase the multiple you need, and you need to make the necessary focus when you change the mirror.

C. Don't be troubled by the upper and lower, left and right images that you see, this is a normal situation for astronomical Telescopes.

4. Effective observation notice

If the Telescope gets outdoors for the first time in air with lower indoor temperature, it must be used for a few minutes-because the temperature difference will make the lens blindfold.This phenomenon will disappear after 15-20 minutes.If your eyelids or fingers touch the eyepiece, the cloth that can't afford the hair will be gently wiped to see the mirror to prevent blurred images.It takes about 30 minutes to enlarge your pupils to adapt to darkness, so use a Telescope at night. After half an hour, you can see a much dark celestial body.

5. Various factors that may affect the observation results Observation results are not all taken in the optical properties of the Telescope, and there are many factors that also affect the quality of the image.

A. The atmosphere surrounded by the earth is always moving. This kind of atmospheric movement and rotation will cause bad images at a high rate. Perhaps after a few nights, the observation will improve.

B. The heat on the surface of the earth will also cause the fluctuations of the air and make the image distort and deform, resulting in poor observation.

C. The observation angle of the Telescope and the star and horizon has a great impact on the observation effect: if the star body is close to the horizon, the goal will be blurred.

D. Pollution of light sources: use your Telescope (such as under street lights, under room Lights, etc.) as much as possible in a light -free environment, high -mortar astronomical Telescope is very sensitive to light.Even more obvious, it seems that many stars will disappear over the urban area.

E. Moonlight may also be another factor that affects observation. The dazzling full moon or bright moonlight will blur the nearby stars or planets, and the moon itself is the best observation state between darkness and Tianming.

f. Try to avoid observation from opening the window (let alone observation of closed windows), especially in the cold season, the indoor and outer temperature difference can be worse, which will make the observation quality worst.

G. The cloud layer accumulated in the sky cannot penetrate the observation, but this cloud will often move.

H, star flashes are caused by air convection, which will also affect observation.

Remember, in any case, do not directly observe the sun through a star -seeking mirror or main lens barrel, otherwise it will seriously damage your eyes.

How to maintain your astronomical Telescope

This product is an optical instrument. When using it, it should be carefully placed to avoid severe impact or vibration. When not in use, the front cover should be covered to prevent dust from entering.Do not put the Telescope in a place where the temperature is too high, too low, wet or chemicals volatilize.The glass surface of the Telescope has dirty or dirty brushes or wiping cloth to brush or wipe, and you must not wipe it with your hands.If you find that there are severe dirt, mold or institutional failure, damage, etc. inside the Telescope, do not dismantle it by yourself. You should send professional maintenance departments to handle experienced repair personnel.

How to clean up the cleaning and maintenance method of barbecue ovens to fully maintain Barbecue oven

1. Usually the maintenance of the oven

1. Keep the Barbecue oven clean. Do not have the remaining food or carbon ash and oil of barbecue;

2. Put the Barbecue oven in a ventilated and dry place;

3. Cover with a barbecue stove;

4. Don't press heavy objects on the barbecue;

5. The grill can be applied to a layer of edible oil to prevent rust.

2. Before use of barbecue stoves

1. clean Barbecue oven fire and close all screws.During the barbecue process, the Barbecue oven will heat and deform. If the installation is incorrect and firm, the deformation of the Barbecue oven will be more serious, and it may affect the effect of barbecue.

2. Apply a layer of edible oil on the grill to prevent the actual object from sticking to the baking network, and the cleaning will be simpler.

Third, barbecue

1. For the charcoal stove, the amount of charcoal should be moderate.If there are too many charcoal, it will produce high temperature and high fever, which is not conducive to barbecue operation.In addition, high temperature and high fever may cause the heating deformation of the accessories of the barbecue furnace fire, causing damage to the Barbecue oven.Generally speaking, the area of charcoal should be controlled within 80%of the grill area, and the height should not exceed the height of the grill.

2. For electric furnaces and air furnaces, the fire fire is not allowed to be at the highest position for a long time.

3. barbecue foods must not exceed the normal load of barbecue and grill.Otherwise, it is easy to cause the grill under the grill and cause deformation and easily cause danger.

4. Do not add liquid combustion or spray to charcoal during use.

Fourth, after barbecue

1. When the fire of the furnace naturally extinguishes (charcoal furnace), after the temperature of the barbecue furnace drops to normal temperature, remove the charcoal ash and wipe the Barbecue oven.

2. Wipe the Barbecue oven with a clean dry cloth;

3. Apply a layer of edible oil to the grill;

4. Place the baking oven in a ventilated and dry place \ cover the Barbecue oven cover.

1. What color is good for Fishing sunscreen

summer fishing can be worn: white, blue, green, red.These colors of clothes are relatively Sun protection, but do not wear black. Black is relatively hot.

The main function of sunscreen is to block the direct irradiation of the Solar ultraviolet rays, and the effect is the same as the Parasol.Sun protection clothing began to popularize in the United States in 2007, and then entered China.

2. How to choose fishing sunscreen clothes

1. The requirements of the fishing clothing are mainly long -sleeved to prevent mosquito bite. The fishing requires patience. It may be a whole.The sky is possible, so it is necessary to have the function of fast -drying and sweating, while not sweltering.

2. hat pocket: Can we wear the position of the hat on the hat to adjust the position of the hat pocket to the front and back of the face, left and right, up and down, so as to be comfortable, so thatCan prevent ultraviolets from invasion.

3. Shoulder and : You need to choose three -dimensional tailoring.It does not hinder your movement is to scientifically consider the tailoring of human movements.

4. Look at the underarm: see if you strengthen or adopt a wear -resistant clothing.

5, zipper: The surface of the zipper should be selected to process resin processing to prevent water from invading water.

6. Cuffs: Whether the cuffs are used to use telescopic anti -dirty materials, so that there is a thumbshole cover when the hand is through the cuffs.And prevent the palm of your hand from being blackStop holding fish rods to start cocoon.

7. Clothing: To choose the back clothes, bend over to let the hem are close to the body to prevent ultraviolet rays from invading the waist.

As long as the above points are through the above points, regardless of the strong wind, scorching sun, can also easily play advanced performance in strict environments to determine the comfort and safety of the fishing process.

raincoatWhat materials are made

Modern society often uses plastic film or Raincoats made of rainproof cloth. Such Raincoats have the advantages of simple production, lightness and softness, many varieties and low prices.There are many kinds of raincoat fabrics in life, including nylin Oxford cloth, coating fabric, polyester fabric, PTFF (polytefluorolythery), GORE-TEX fabric, etc., but for Outdoor athletes, Breathable.

Tape: The glue of the raincoat is attached to the cotton cloth, soft and thick, and it is relatively strong.

Rainproof cloth: Both coats, good waterproof performance, but thinner and crispy.

plastic: Easy to carry raincoat, good water resistance, cheap, but not long service life.

Oxford cloth: Mianlun or polyester is obtained by a specific weaving method. It is easy to wash, fast dry, soft, hygroscopic, soft fabric color, soft cloth body, good breathability, comfortable wearing, and double -color effects.

Coating fabric: A layer of waterproof and humid coatings are coated with the inner surface of the fabric. For example, the raincoat commonly used by the police and climbers, the waterproof and breathable effect is better, but the price is high.

Polyester fabric: The biggest advantage of fabrics is that the wrinkle resistance and preservation are very good, but the chromosome is poor and the hygroscopic breathability is poor.

PTFF (polytrafluoroethylene): Wearing light, comfortable, good waterproof and breathable performance, cheap price.First used for the production of military uniforms and protective clothes, and then for sportswear.The manufacturing of tents and other items is also an excellent material for biochemical protection.

nylon: The product has a good gloss, good and abrasion resistance, but it is easy to deform under external force, so its fabrics are prone to wrinkles during wear.

GORE-Tex: Wind -blocking, rain -blocking, comfortable, and breathability. It is composed of film and high -performance textile fabrics, and a new type of bonding agent is sealed to provide long -lasting waterproof protection.

Buying skills of raincoat

1. Look at workman

The workmanship of the raincoat is very important. If the pin of the pin of the raincoat is too large, the needle seam is inconsistent, the seal is not up to the standard, and the anti -leakage treatment is not used.

2. Select the appearance

The appearance of the middle is one of the prerequisites for purchases. At present, there are many styles, colors, patterns, etc. of Raincoats. The space that can be selected is very large.

3. Try size

Choose a reasonable size according to your actual situation, and you can try it on if there are conditions.Avoid too much inconvenience to activities, or too small to play a good rain -blocking role.

raincoatPurchase misunderstanding

1. The thicker the raincoat, the better

For Raincoats, thickness is secondary, and the role of Raincoats is mainly to rely on waterproof fabric waterproof, that is, the quality of the raincoat depends on the fabric itself.Not big.Too thick Raincoats will also be poorly breathable, which will lead to decreased comfort.

2. The brand's raincoat must be good

Many people think that the brand's raincoat credibility is good and quality, and the one who chooses the brand must be the best.However, we must consider which products to choose in combination with our own needs, economic capabilities, and actual use. We must not just look at the brand. Maybe this brand's products are not the best for you.

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1. What is the skiing board material

Skiboards are one of the essential equipment for skiing. When choosing a Ski board, the material of the skiing board is an important consideration. So how many materials are there in the skiing board?

Generally speaking, there are four materials on the mainstream Skiboard on the market:

1. Wooden skiing board: The price of wooden Ski panels is cheaper, and the effect is not good. Wooden skiing boards are easy to deform when water encounters water, and it will easily damage and poor practicality.

2. glass fiber skiing board: This type of skiing is more, but the price is more expensive and it is not easy to repair after being damaged. The price is not high.

3. carbon fiber skiing board: carbon fiber skiing board is also a composite Skiboard. It is very light and has excellent strength and stiffness, so it is very popular.

4. Metal Ski panels: The price of metal Ski panels is high, and it is too heavy when getting started. It is not suitable for long -term taxi.

2. How about wooden skiing boards

Among the many materials of skiing boards, wooden skiing boards are more common. In fact, in the early Ski sports, wood is the first choice for skiing plates. Because of the low density of wood and high strength, it can make various shapes, and it is easy to make it easyoperate.In order to facilitate people's control, the initial skiing board was thin and long, and there was a thick wood on the binding part.

However, the fatal injury of the wood is that the strength is prone to deformation and the strength in the state of twisting.Therefore, the subsequent skiing board changed the traditional single -piece wooden structure, mixed with structure elements such as plastic plate bases, steel, edges, and aluminum alloy, greatly increasing the strength, elasticity and stability of the board, and the length of the plate body gradually became shorter.

Generally speaking, wooden skiing boards are better for beginners and comfortable skiers, but they are poorly practical. If they are often playing skiing, it is not recommended to use wooden Ski boards.