BRESSER CORVETTE 8X42 BINOCULARS NITROGEN PURGED
The BRESSER Corvette models provide high definition images that will please the most discerning observer. The perfected and precise mechanics round out these superb binoculars. It is only natural that BaK-4 glass has been manufactured into these binoculars, and that the optical surfaces have been full multi coated (FMC) to increase luminosity and contrast. Long Eye (LE) relief eyepieces allow a full field of view for spectacle wearers. To protect the binocular against fog and water they are nitrogeen filled.
|FIELD OF APPLICATION|
|Field of application||
|Mirror/Lens diam.||42 mm|
|Type of coating||Fully multi-coated|
|Colour of coating||green|
|Eyepieces for eyeglass wearers||✓|
|Field of view at 1000m7||105 m|
|Field of view||6 degrees|
|Near focus from7||7 m|
|GENERAL TECHNICAL DATA|
|Pressure waterproof up to||1 m|
|Inert gas purged||✓|
|Focusing system||Central focus wheel|
|Turns of focus drive over entire focal range||1.5|
|Interpupilar distance min.||57 mm|
|Interpupilar distance max.||72 mm|
|Eye relief||20.3 mm|
|Dust protection caps||for front lens and eyepiece|
|DIMENSIONS & WEIGHTS|
|Total length||150 mm|
|Total width||123 mm|
|Total height||51 mm|
|Net weight (without access.)||532 g|
Scope Of Delivery
- Nylon bag with shoulder strap and belt loop
- Carrying Strap
- Protective objective lens caps
- Protective eyepiece caps
- Lens cloth
The Bresser Messier AR-80/640 Nano Refractor Telescope is a complete beginner’s telescope. It’s a 3-inch achromatic refractor that’s bundled with everything a newcomer needs to get started: a manual altaz mount, a red dot finder, a star diagonal and a 26mm Plössl eyepiece.
Its 3-inch aperture is more than adequate to allow observations of a wide range of celestial objects, its altaz mount is intuitive to use and the whole thing is a doddle to set up.
Achromatic doublet lenses, like the ones in this scope, are made from two types of glass that work together to minimise chromatic aberrations – an unwanted effect that produces coloured halos around bright objects.
More expensive optics have a number of special coatings applied to reduce reflections and increase light throughput, but this lens assembly has only one coating of magnesium fluoride (MgF2) – the minimum required.
The inside of the seamless aluminium optical tube is nicely blackened, though and has a single baffle to help reduce unwanted internal reflections.