Good Reference

"Jon Isaacs" wrote in message
...

What is the arc second separation?

According to Cartes du Ciel"

Epsilon Bootes is about 2.9 arc-second separation with magnitudes of 2.58
and
4.81. It is a nice double because of the difference in brightness but not
particularly difficult.

jon

I understand that if you can see six trapezium stars, this would be a good
measure