I was trying to map places in Nepal using satellite imagery but there is no high resolution imagery available at zoom level 15-16 . I was looking to map places like Illam, Dhankuta. Is there a free source of aerial imagery for these places so that i can use it with JOSM to map these places in openstreetmap?
are you in touch with the Nepal community? http://www.osmnepal.org They have quite a lot of projects going on, particularly in the field of Disaster Risk Reduction. Apparently, they have access to higher-resolution images as well: http://tasks.hotosm.org/job/190 (look under the workflow tab)
List of curren tasks: http://tasks.hotosm.org/#all/nepal