Stunning stuff. The juxtaposition of the wildlife in the mountains against the backdrop of the city lights of Tucson is dramatic.

For those of you who haven't been following this thread for all the years I have - just know that this is a labor of love that you are privileged to share in.
I can't think of anywhere else you could get this kind of content without paying a subscription fee and Guy1az just lays it out for us at no charge. The amount of equipment necessary to do this pretty extensive as well as being costly to acquire and maintain and the time and talent necessary to sort through and edit the content down to what you see here is also considerable. We are very lucky to be able to enjoy this thread here and owe the author a debt of gratitude for showing us things few would ever see otherwise.