Last month, I spend some time with my binoculars to see how they perform with a pair of UHC-filters. These binoculars accept regular eyepieces, which is an advantage when it comes to using filters. Don't worry if your binoculars have fixed eyepieces. You can still insert the filters in the eyecups. If they don't fit immediately, cut some rings of foam to keep the filters at place. It is not the ideal solution but it works!
Here is my impression of Messier 17. The lower power of a pair of binoculars give room for observing the subtle extensions of M17. The Milky way background west of M17 also displayed a subtle pattern of mottling. The small cluster south of M17 is Messier 18. I hope that my sketch inspires you to grab you binoculars and go observing.
Site : Bisschofshofen, Austria
Date : July 18, 2012
Time : around 21.30UT
Binoculars : Teleskop Service 90° 70mm binoculars
Magnification : 21.6x
Filters : UHC
Seeing : 4/5
Transp. : 5/5
Sky brightness : 20.8 magnitudes per square arc second near zenith (SQM reading).
Sketch Orientation: N up, W right.
Digital sketch made with Corel Paint Shop Pro X2, based on a raw pencil sketch.