Eratosthenes Experiment in pictures .

https://www.flickr.com/photos/gurudevobservatory/albums/72157689397333250

Honorary outreach activities of Gurudev Observatory 

https://www.flickr.com/photos/gurudevobservatory/sets/

A bird eye view on completely honorary outreach activities at 

http://www.gurudevobservatory.co.in/index.php/outreach

Awards,Certificates & honors to the Gurudev Observatory 

http://www.gurudevobservatory.co.in/index.php/awards-certificates-and-honors