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Tuesday, June 6, 2023

Twilight attractions ! - பொன்மாலை பொழுது !!

பொன்மாலை பொழுது; இது ஒரு பொன்மாலை பொழுது

வானமகள் நாணுகிறாள், வேறு உடை பூணுகிறாள்   .. ..

ஆயிரம் நிறங்கள் ஜாலமிடும்  .. ..  ராத்திரி வாசலில் கோலமிடும் ..

இசைஞானி இளையராஜா இசையில் பட்டிதொட்டி எல்லாம் ஒலித்த அற்புத பாடல் நிழல்கள் படத்தில் இருந்து


Evening is one among the most beautiful times !  - to everyone looking at sky, the horizon provides astonishing things.  

Sunset is simply the point that the sun disappears over the horizon.  Twilight is the period between sunset and dusk. During twilight there is still light in the sky. There are three types of twilight: civil, nautical and astronomical.  

Civil twilight occurs when the Sun is less than 6 degrees below the horizon. In the morning, civil twilight begins when the Sun is 6 degrees below the horizon and ends at sunrise. In the evening, it begins at sunset and ends when the Sun reaches 6 degrees below the horizon.  

In its most general sense, twilight is the period of time before sunrise and after sunset, in which the atmosphere is partially illuminated by the sun, being neither totally dark or completely lit.  

For astronomers, astrophotographers and casual skywatchers, astronomical twilight is a great time to spot objects in the sky.  Astronomical twilight generally happens twice each day: It begins in the morning before dawn or ends in the evening after sunset when the geometric center of the sun is 18 degrees below the horizon. When the sun is at or above 12 degrees below the horizon, it's no longer astronomical twilight. 

During astronomical twilight in an area without light pollution, the horizon disappears from view and even the dimmer planets and some less visible stars can be spotted with the naked eye, according to Nature Scientists. For casual observers and those in urban or suburban areas, the sky may appear fully dark, and viewers can get a good look at objects like planets and stars that appear as a bright point of light. In higher latitudes, rare formations called noctilucent clouds are sometimes visible against a dark twilight sky. However, astronomers wait for truly dark skies to observe galaxies, nebulas and anything else that creates diffuse and tricky-to-spot light sources. 


Forget all the above – simple – sky offers most brilliant shades – it was day 7 of Sri Varadharaja Perumal uthsavam and at Triplicane in the evening there was no thiruther purappadu as it rained – Sri Varadharar had purappadu in tholukku  iniyan. 

Here is a photo of the dark but illuminated sky at the time of start of purappadu around 5.15 pm and the iridescence of Sun as it was setting around 6.20 pm.
With regards – S. Sampathkumar

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