You can use a screen capture utility to grab photos from this site (or get the same photos from www.orbpro.blogspot.com, with the same Creative Commons policy). Cropping is not considered an alteration. 

Content on this site (including photographs) can be shared elsewhere (in books, magazines, or web sites) under this Creative Commons Attribution No Derivatives license requiring attribution (including a link back to this site) and prohibiting derivatives (alterations): 

How to Share This Site's Content for Free