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December 16 Dr. Chuan Hunt Comet 46P / Wirtanen in the early evening. The star of the cow to the naked eye, it is visible. How to take a picture of beautiful stars.
On December 16, 2018, the National Institute of Astronomy (public body) of the Ministry of Science and Technology announced that in mid-December, Comet 46P / Wirtanen would be a small comet in short life. According to estimates, Carl A. Wirtanen would have visited the world by the end of 2019. According to estimates, by the end of 2016, the comet would be bright enough to be visible in the world. naked eye.
This comet will be closest to Earth on December 16th, appearing in the sky early in the morning. The star of the cow At a distance of about 11.5 million kilometers, it appears in the sky with a maximum brightness of about 3 m 3, which lies in the visible range of l & # 39; Naked eye.
In Thailand, we can see from the first hours. But the sky is dark. The noise And no clouds to disturb.
6 ways to shoot a comet
Comet 46P / Wirtanen can start shooting at the beginning of the month. Although this can be observed from the very first hours. But when shooting, it is best to look where the position of the comet is at the highest point of the horizon. To avoid the air masses in the horizon. And it is important to shoot in dark areas without light or moonlight. And clear sky.
1. Find the position of the comet from the site information. Theskylive.com or Stellarium, or first use the telescope's tuning circle.
2. Take pictures on a portable portable device. Or pulled through the telescope. Because the comet is relatively light. It is necessary to take pictures by opening the camera for several seconds.
3. High ISO sensitivity 3200 or higher Which can be adjusted according to the sky conditions. To see the details of the comet's tail is the most obvious. The tail of the comet is relatively light.
4. Use a large opening. Give the camera as much sensitivity as possible.
5. Turn on long-exposure noise reduction to handle the noise often caused by shooting at high ISO and take long shots.
Finally, the RAW file offers the possibility to adjust the image later.
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