Hamed Mirzakhalil, a representative of the International Dark Sky Association in Iran, told Mehr reporter, referring to the beginning of the World Dark Sky Week: The Dark Sky Week is from April 1 to May 1 and has been introduced as a national day in the United States and then enhanced internationally.
World Week of Light; This year’s slogan of exploration, commitment and convergence
Referring to this year’s slogan, which is exploration, commitment and coaching, Mirzakhil said: Recent scientific research has shown that optical pollution has devastating effects on the environment and animal species. Especially species that have chosen night and dark as part of their lives, such as night creams, migratory birds, bats and owls are extremely endangered. This year’s slogan has been chosen to pay attention to the preservation of the darkness of the sky and its impact on the preservation of organisms.
The loss of one billion birds in the US by colliding with bright lights
Mirzakhil also pointed to the reasons for naming this year, saying that the number of bird killing has been registered in the last one or two years around the world, and this requires extensive publicity for people, especially environmentalists, to be informed. Detailed maps of bird migration periods have been prepared in the United States, the one billion birds killed by the collision with light lights and glass of buildings.
People turn off extra lights to help the birds
He added: “This year, it is emphasized that people can help the birds by turning off extra lights, installing curtains or designing glass with colored adhesives to find out that it is not part of the sky and is a hard object that may endanger their lives.”
5 % of the world’s population lives under the lightness of light pollution
“The statistics show that 5 percent of the world’s population live under the sky of light pollution, which at all have no chance under this sky to see stars and galaxies,” he said.
An average of 5 % brighter than the sky each year
Mirzakhil pointed out that the light pollution has begun since the invention of the lamp and its primary purpose was to perform daily activities at night, adding: “Over time, the performance of light at night is also dedicated to beauty and space, and an average of 5 % brighter than the sky each year.”
The darkness of the sky preserves the life of the night
The representative of the International Dark Sky Association in Iran further emphasized: Paying attention to the reduction of light pollution and the sense of darkness of the sky can help preserve the life of different species of organisms and invite everyone to continue their efforts.
White projectors in the big cities of Iran Dark Killer
Regarding light pollution in the big cities of Iran, Mirzakhali said: Many of the projectors and lights are designed to go to the sky, and unfortunately, many contractors and managers think that by adjusting the projector angle, they illuminate more environment. But I have pictures of foggy nights in Tehran that show how much these projectors send to the sky.
He added: “The wrong angle of lights and the color used in the light of projectors also has a great impact on increased light pollution.” With the advancement of LED technology, the manufacture of lights is mainly toward the use of white light. White light has a greater distribution in the atmosphere and molecules of the earth, unlike yellow and red light known as fog, and in many cars traveling in foggy areas, a jaundice is embedded for fogging to see the road driver. But white light has the ability to spread more in the atmosphere, and unfortunately in recent years, both in Iran and in the world, we are seeing switches from old yellow light to white LED projectors.
The representative of the Dark Sky International Association in Iran continued: “LED is not really bad and consumed is little and longer life, but in many places it is not necessary to use white lights.” In addition, if the light is white and the projector angle is incorrect, it multiplies the light pollution.
He also noted that light pollution can be identified in cities and even villages. Especially that we can no longer see the stars, and especially when the sky is cloudy, we see the clouds in the sky; So much that the light goes from the earth to the sky and we see the clouds clearly. If you go to dark spots and remote deserts, you won’t see this scene. When the weather becomes cloudy, you only realize that there is a cloud that you realize that the starry sky is no longer.
There is also light contamination inside the bedroom
“In the house, we also think we will turn off the lights and fall asleep in the dark, but our eyeball and our delicate eyelids do not have the ability to prevent annoying light from entering the eyeball,” he said. The same amount of light that enters the bedroom through the window and the alley causes the human biological clock to break. Its test is too comfortable; In the darkness of the room, we open the hand in the elbow, and after a few minutes when the eyes get used to the dark, if we see our fingers, we find that we have light pollution inside the room. Unfortunately, in most of the big cities of Iran, all homes and bedrooms are influenced by the presence of disturbing external lights that prevent the secretion of melatonin hormone, which disrupts biological clock.
The connection of optical contamination by adjusting the sleeping
The representative of the International Dark Sky Association in Iran pointed out: Inside the houses, the annoying lights that enter the windows can disrupt the human sleep and clock. These lights prevent melatonin hormone secretion, which helps regulate sleep. In Iran and other countries, we are seeing the shifts from yellow to white lights, but unfortunately there are no specific criteria in this regard and the only electricity department is responsible for the lighting of the passages.
“Intercity roads have specific standards and there are lighting engineering tables that determine for each passage, depending on the amount of traffic,” said Mirzakhil. Unfortunately, there are no other laws inside or outside the cities. For this reason, the International Association has put forward an idea called “Dark Sky International Parks”.
He added: “These parks usually have several hectares to several hundred hectares and have strict rules and standards for the use of lighting resources.” Around these parks, if there is a small city or sports complex, their lighting resources must also be standard so that it will not be disrupted in the middle of the park. The goal is to make the visitors to the Milky Way clearly.
Seeing the Milky Way Galaxy from the German Parks Dark Esman
Mirzakhali continued: These parks are designed so that both the dark lovers of the sky can see the galaxy and the specific species whose lives depend on the darkness of the sky. These parks allow wildlife enthusiasts to watch the lives and activities of these animals and even plants. Also, there are training platforms and guidance signs that help observers and visitors guide the right positions and secure their security.
There are 1 to 2 Dark Sky International Park in the world; Trying to create this park in Iran
He said: “Currently, there are about 2 to 5 dark sky international parks in the world and in Asia, there are five of this type, one of which has just been created by Saudi Arabia.” Unfortunately, we do not yet have these parks in Iran, but we are trying to register the rules and regulations of these parks with the Ministry of Cultural Heritage and Tourism.
Representative of the Dark Sky International Association in Iran, pointing out that many astronomers travel around the big cities and near the villages to observe the stars to reach the appropriate sky. The lowest appearance of the lowest star that can be described as the sky with an unarmed eye. The more the sky is darker, the greater the value.
Which Iranian cities have the most light pollution
He continued: “The darkness of the sky is measured with value and determines the observation conditions (transparency) of the sky and the quality of one’s vision.” Tehran has the highest light pollution in the country, so that one of Tehran’s observatory has been 1.5 km from Tehran for the past five years and has now fallen below 2. The higher this index, the more stupid heaven becomes, and the lower the sky, the lower the star. The cities of Mashhad, Qom, Shiraz, Isfahan and Tabriz have the most light pollution after Tehran.
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