Helios - Quantum-7.4 / 25 x 100 Semi-Apo Triplet Observing Binocular
Superb award winning waterproof, nitrogen filled giant observation binocular with individual helical eyepiece focusing, designed for medium to long range terrestrial and astronomical observations. Incorporating oversized BAK-4 prisms and a fully broadband multi-coated optical system to ensure class leading optical performance. Premium quality triplet objective lenses provide semi-apochromatic optical performance reducing abberations for crisp high contrast views day and night. Eyepieces are angled at 45°, offering excellent versatility and viewing comfort for both terrestrial and astronomical viewing.
Features include built-in lens hoods, finderscope shoe and carrying handle. High quality precision all-metal construction. Supplied with a quality hardwood tripod and heavy duty fork mount which is specially designed for astronomical use, allowing the binocular to be angled upwards for use at high altitudes approaching the zenith., the binocular is provided with a quality foam lined storage case.
Vergroting 25 X
Diameter triplet-objectief: 100 mm, top quality objective lens
- Beeldveld: 2.53°
Individueel scherpstelling van de oculairen
BAK-4 prisma's met vergroot oppervlak, fully multi-coated (breedband).
Triplet-objectieflenzen, semi-apochromatisch !
Vorkmontering en zeer stevig statief in hardhout.
Geleverd in een stevige draagtas op wieltjes.
Minimum scherpstel-afstand: 30 m
Gewicht: 13 kg. + 7.1 kg (statief)
The overall finish of the Quantum-7.4’s seemed to be of a better standard, with all surfaces exuding quality….A hardwood tripod and U-fork mount, which did the job perfectly, made observations at the zenith very comfortable, with the 45° angled view….There wasn’t as much trailing off of image quality towards the edges….Stars really filled the field of view and we felt like we were falling through the sky. This was matched by views of the Moon that were incredibly detailed….Visually the Quantum-7.4’s seemed to have the edge on all the others….The sky background appeared to be the darkest of the four on test, with better contrast, so deep-sky objects like faint nebulae stood out slightly better. Indeed the nebula M17 displayed a mottled surface and was a wonderful smudge in the sky….They were a real delight to use”
BBC Sky At Night Magazine