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Category: Atmospheric Phenomenon


gallery_crepuscular_rays

Crepuscular rays taken from Manila Bay, Philippines on January 21, 2013. Canon 450D DSLR, ISO 100, 1/4000 sec exposure. Crepuscular rays are rays of sunlight which stream from gaps in the clouds and appear to radiate from a single point in the sky (the location of the Sun). Photo Credit: Anthony Urbano. For more images of crepuscular rays, click here.

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© Anthony Urbano (Manila, Philippines)

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A lunar halo observed in Quezon City, Philippines, on September 27, 2012 Photo Credit: Anthony Urbano

A 22-degree lunar halo visible in Quezon City last night was captured with a Canon 450D DSLR, 50 mm prime lens at f/1.8, 1/3 sec exposure, ISO 1600. The halo surrounding the moon is caused by the refraction of moonlight through the edges of six-sided ice crystals in high-altitude cirrus clouds. Since blue light refracts more than red, it is always colored blue on the outside and red on the inside. Such phenomenon may also be observed around the Sun.

Related link: Lunar Halo

For featured photos, click here.
For tutorials on how to get started with astrophotography, click here.
For DIY astronomy projects useful for astrophotography, click here.
To subscribe to this site, click here.

© Anthony Urbano (Manila, Philippines)

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