Sunday, November 8, 2015

Light Pollution and Skyglow - Some Thoughts

Relaxing under a clear nighttime sky - with millions of twinkling little stars looking at us, is always a tranquil experience. Isn't it?

And bring to mind the grandness and greatness of the universe. Andromeda Galaxy, the nearest galaxy to ours, is around 2.5 million light years far. That means, what we see today is something from 2.5 million years back!! Long before even the first human on Earth!

But..

What is light pollution


By this time, you might have heard a lot about this. If you haven't, light pollution means hampering the natural darkness of the night due to wrongly directed artificial lights. It is often seen as a sky glow above populated areas and cities. Sometimes it looks like a glow in the horizon, making zenith darker than the horizon.

Saturday, December 7, 2013

Water Birds from Alappuzha

Alappuzha with its wonderful backwaters and paddy fields offers habitat for a wide variety of water birds. 
The photos were taken from paddy fields by the side of road, near Alappuzha.

Indian Pond Heron
Indian Pond Heron (Ardeola grayii)
Exif : f/7.1, 1/320s, ISO 160, +1/3 step, 450mm, Nikon D7100, Sigma 150-500mm

Monday, November 18, 2013

Pygmy Skimmer Dragonfly

A Pygmy Skimmer dragonfly on the tip of  a leaf.  It is a small dragonfly with only 3 centimeters of length.

Pygmy Skimmer Dragonfly