Explore Scientific BT–100 SF Giant Binocular
Our experts review the latest kit
Nothing quite matches the pleasure of scanning a clear, dark sky with big binoculars, so Explore Scientific’s new 100 SF Giant Binocular – part of its Binocular Telescope (BT) series – looks like an attractive option, in theory. But how does it fare in practice?
The binoculars come protected in a foam-lined box, which includes the 20mm, 62°, Argon-purged eyepieces. After you’ve secured them into their focusers, you can focus the eyepieces individually with self-centring compression rings. They have fold-down eyecups and just enough eye relief to allow you to see the entire field of view if you wear spectacles. You adjust the interpupillary distance (IPD) – the distance
