Just north of Manistee a Loggerhead Shrike has been hanging out on Bar Lake Rd. for a few days. On Friday I made the forty minute drive but could not find the bird. After not seeing any reports of it on Saturday, it was sighted again in the same area by Leonard Graf at 10:45 this morning. So early this afternoon I finally caught up with the little impaler as it hunted from the power lines right alongside the road.
What's remarkable in the unremarkable photo below is that the dark speck near the center is Bald Eagle flying at very high altitude.
|Bald Eagle spotted without optical aid and photographed with a 500mm lens and 1.4x converter|
How high you ask? Well let's do the math. First we have to figure what its angular size is. The easiest way to do this is to compare it to an object of a known angular size. After the sunset on Thursday the waning crescent Moon was high in the evening sky. So I took a photo of it using the same set up that the eagle photo was taken.
|Moon shot with 500mm lens and 1.4x converter|
|Cut and pasted Eagle onto Moon while maintaining scale of respective photographs.|