Omegon Brightsky ED-APO Binoculars 30×100 - 90°

Omegon Brightsky ED-APO Binoculars 30×100 – 90°: ED-APO giant binoculars with interchangeable eyepieces

The Omegon Brightsky ED-APO 30×100 with 90-degree viewing angle is a giant binoculars with interchangeable 1.25-inch eyepieces, magnesium housing and nitrogen filling. You can buy the bare binocular here with two 18 mm eyepieces; the case and mounting kit are sold separately.

With a 100 mm aperture, you view with both eyes objects that are already impressive in a single 100 mm refractor. This is the culmination of the Brightsky line and requires a serious mount.

100 mm at 30x: the maximum with both eyes

Two 100 mm objectives effectively turn this binoculars into a double refractor. Globular clusters like M13 resolve into stars at the edge, in M42 you see the Trapezium stars separated from each other, and the M81 Galaxy shows a clear core.

At 30x magnification, the field of view is 2.1 degrees, still four full moons wide. The 3.3 mm exit pupil suits a dark-adapted eye well and keeps the sky background dark.

90-degree viewing angle for the zenith

With a 90-degree viewing angle, you look into the eyepieces from above, just like with a refractor with a star diagonal. Objects directly overhead, where the sky is darkest and most transparent, can be viewed without straining your neck. That is why most astronomical users choose this variant.

For observations low on the horizon, the 90-degree position is less convenient: you then stand bent forward. For predominantly daytime observation, the 45-degree version makes more sense.

Apochromatic lenses without color cast

The ED-APO version uses objective lenses with ED glass. Color errors that appear in a standard achromat as purple fringes around bright stars, the lunar limb, and high-contrast daytime objects are virtually absent here. Stars are small white points right up to the edge of the field.

The difference compared to the standard Brightsky is most clearly visible with the moon, Jupiter and Saturn, and during the day with branches against a clear sky. For faint nebulae, the gain is smaller: there, aperture is what matters most.

Interchangeable eyepieces and filter thread

By default, two 18 mm flatfield eyepieces with a 65-degree apparent field of view are included. They are 1.25 inches, so you can replace them with any pair of eyepieces from your telescope case. For example, two 10 mm eyepieces provide a higher magnification for the moon and planets.

Both eyepiece holders have 1.25-inch filter threads. A pair of UHC filters enhances the contrast of nebulae from a light-polluted environment. Each tube has its own focusing mechanism, allowing you to precisely adjust the viewer to your eyes.

Mounting a tripod

Almost 7 kg of optics on a long tube: here the Neptune fork mount is not an accessory, but a requirement. In combination with a pier tripod or the carbon tripod, you can look up comfortably from a chair without the image shaking.

This binoculars cannot be used on a standard photo tripod. Anyone who wants the complete package all at once should choose the set with the Neptune fork mount and tripod.

Included

• 90-degree viewing binoculars
• Two 18 mm flatfield eyepieces, 1.25 inch, 65 degrees
• Foldable eyepieces and objective lens caps
• Handle and 1/4 and 3/8 inch tripod mount on the bottom
• Transport bag

Featured accessories

We recommend the Omegon Pro Neptune fork mount as a carrying system and the matching Omegon hard case for 100 mm Brightsky for transport. For city smog: two Omegon Pro UHC fog filters 1.25 inches.

For whom yes and for whom no

• ✓ Deep-sky with two eyes: star clusters, bright nebulae, the Milky Way
• ✓ Moon and planets, where color purity makes the difference
• ✓ Observers who already own 1.25-inch eyepieces and filters
• ✓ For those who want an instrument for years to come, with room to grow in magnification
• Handheld or on a light photo tripod: too heavy, too much magnification
• ✗ Traveling with limited luggage space; for this, a 10×50 is more suitable
• ✗ If you are looking mainly low on the horizon, choose 45 degrees

Specifications

You can find all the large binoculars, mounts, and cases for this brand on the Omegon brand page.