202 1 Perseid meteor shower viewing place and time shooting guide

You can see the Perseid meteor shower soon, which is the most worthwhile use of Xinyu in a year. If your city is sunny, it is very suitable for stargazing. I suggest you go to a place with less light pollution.

Perseid meteor shower, the most ornamental meteor shower in 2008, is one of the three major meteor showers in the northern hemisphere (the other two are the quadrant meteor shower in early October of 65438/kloc-0 and the Gemini meteor shower in mid-February of 65438), which always brings us a visual feast from August to June 13 every year. It is not only numerous, but also the most active and frequently observed meteor shower. In addition, the maximum value of Perseid meteor shower basically appears in the middle of August every year, that is, the summer in the northern hemisphere, which is very suitable for outdoor appearance stars.

Perseid meteor shower is one of the three major meteor showers in a year, with a large number of meteors. In recent years, the hourly rate of zenith meteors can reach about 100, and the number of fireballs is the highest among all meteor showers, which is very ornamental. In addition, the maximum value of Perseid meteor shower basically appears in the middle of August every year, that is, the summer in the northern hemisphere, which is very suitable for outdoor appearance stars.

Wu Liang, a senior engineer at Shenzhen Observatory, said: "The observation conditions of this Perseid meteor shower this year are very good, because the moon just goes down when it is particularly large, and there are no other sources of light pollution in the sky. Moreover, the Perseid meteor shower is one of the three major meteor showers every year, with more meteors than other meteor showers. "

Figure: Schematic diagram of the location of the radiant point of Perseid meteor shower at 22: 00 on August 20021year. The yellow arrow means that the meteor is visible, and the red arrow means that the meteor is invisible.

This year's Perseid Meteor Shower will occur at 3-4 August in 13, and the best viewing time is from 22: 00 August in 12 to before dawn in 13. The radiant point of Perseid meteor shower has risen at 22: 00 on June, 5438+02, but the moon has set before, and there is no moonlight influence in the night sky, so the viewing conditions are excellent. As the radiation point rises, we can have the opportunity to see more meteors from all directions.

Watching time

The active period of Perseid meteor shower is basically from July 17 to August 24 every year. This year's meteor shower was not affected by moonlight during the whole observation period, and the observation conditions were excellent. The maximum period of this year's forecast is from 3 am to 6 am on August 13. Members of the public who are interested in observation can watch it in a wide field of vision from 2 1 on August 2nd to before dawn on August 3rd.

The biggest period of this year coincides with the fifth day of the fifth lunar month, and the moon phase belongs to the moth-eyebrow month. The moon in Shenzhen enters the horizon at 2 1:40. After that, there was no moonlight interference in the night sky, and the radiant point of Perseid meteor shower just appeared near the northeast horizon. It can be said that this year is the best time to observe the Perseid meteor shower in the past two years.

Selection of viewing place

The biggest problem affecting the viewing quality of meteor shower is light pollution. Overbright city lights will light up the night sky and cover the stars. For the Perseid meteor shower, there may be 100 meteors per hour in the maximum period. If you choose to watch it in the city center, you may only see 1-2 or even 0 meteors per hour. Therefore, if you want to get a high-quality meteor shower viewing experience, the best way is to stay away from the city center and go to areas with less light pollution.

Pay attention to the weather forecast

Astronomical observation on the ground needs sunny days. If you plan to watch the meteor shower, remember to check the weather in advance.

How to watch the meteor shower 1 is actually very simple for ordinary fans. On the premise of good weather and good environment, you just need to lie on the ground and look at the sky. Observers can observe directly with the naked eye.

2. Meteors may appear anywhere in the sky, and the field of vision of the observation site must be wide.

3. Observers should be familiar with the observation site in advance to ensure safety.

4. Pay attention to keep warm and repel mosquitoes at the same time. You can prepare a damp-proof mat or lounge chair.

Stargazing tips

1, you don't need a telescope to watch the meteor shower, you can use the naked eye.

Because meteors can appear in any direction in the sky, the bigger the sky we can see, the better. Therefore, if a telescope is used, the field of vision will be reduced, which is not conducive to watching meteor showers.

2. Choose a dark place, away from street lamps and downtown.

Shooting skill

Astronomical experts said that if you plan to shoot a meteor shower, you need to be equipped with a professional camera, tripod and wide-angle lens. Parameter setting can follow the principle of high sensitivity and short exposure, that is, the camera sensitivity is as high as possible and the exposure time is shorter than that of ordinary starry photography. You can set the exposure time to 5- 10 second, and then use the cable release to control the camera to shoot continuously 1 hour or even all night.

In addition, if the weather is fine, the Shenzhen Observatory will broadcast the meteor shower online, and the detailed live broadcast information can be obtained by paying attention to the official account of "Shenzhen Astronomy" WeChat.

Shooting guide camera shooting

Camera, wide-angle lens tripod with large aperture (below 35mm focal length), sufficient battery (external power supply is the best), memory card (the bigger the better, it is recommended that 128G or above).

When shooting a meteor shower, you should consider a relatively high ISO, preferably above 6400, and the exposure time is relatively short. It is suggested that 5- 10 second (because most meteors will only last for a short time in the night sky, if a long exposure time is used, the background sky will be too bright to cover the meteors), and the maximum aperture of the lens used for shooting, that is, the f value, is the smallest. Of course, these parameters need to be adjusted according to your environment.

Next, we need to let the cameras shoot at intervals. Some cameras have their own interval shooting function, which can be set according to the instructions. If the camera itself has no interval shooting function, you can use the cable release with interval shooting mode. If it is a simple cable release, you can let the camera shoot continuously through the cable release (but this will consume more memory cards). Now everything is ready, just waiting for the meteor to appear quietly!

Mobile phone shooting

Prepare mobile phone (using professional/manual mode), tripod for fixing mobile phone and charging treasure.

When shooting, the ISO is as high as possible, the exposure time s is set to 10-20 seconds, and the focal length is adjusted to infinity. If there is an interval shooting function, these parameters are for your reference only and need to be adjusted according to your environment. Most importantly, your mobile phone should reserve enough storage space, and when everything is ready, just wait for the meteor to appear quietly!