Opticron SR.GA 10x50 binoculars
Aperture: 50mm, 5° field of view
Telephone: 01582 726522
With a traditional look, the Opticron SR.GA binoculars are rubber armoured for better protection and grip.
They have plastic front caps and both have individual caps and a single cover for the eyepieces.
They also have soft rubber eyecups.
Although these weren’t an impediment, we would have preferred to see the twist-up variety, although spectacle wearers could still fold them down for a more comfortable view.
Overall they are the most compact of the Porro prism binoculars on test, and while the tripod bush allows for more stable views when attached to a tripod, we found we were able to hold them for long periods of time with no discomfort.
Interpupillary adjustment was a bit stiff but dioptre adjustment was smooth, with a graduated scale on the side.
Centre focusing worked reasonably well but was a little coarse.
The multicoatings reduced ghosting and it was only evident on the brightest stars.
Altair was sharp through the inner 65 per cent of the 5° view, with slight trailing out to 75 per cent before any significant distortion became apparent.
Albireo could just be split and was a good sight when the binoculars were tripod mounted. Jupiter’s Galilean moons also stood out well.
Our test galaxies also included M81 and M82 in Ursa Major and the edge-on smudge of M82 was unmistakable.
Sweeping down the nebulae and clusters of the Milky Way was a treat with good views of M27, the Dumbbell Nebula and the open cluster M11.
All in all, we were impressed with the views of deep-space these bins delivered.
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This review appeared in the October 2010 issue of Sky at Night Magazine