Omegon Brightsky ED-APO Binoculars 30x100 – 90° + Case: ED-APO giant binoculars with interchangeable eyepieces, complete with case
The Omegon Brightsky ED-APO 30x100 with a 90-degree viewing angle is a giant binoculars with interchangeable 1.25-inch eyepieces, a magnesium housing, and nitrogen filling. This version comes in the matching hard case, so you can take it with you safely right away.
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 hard case
This version comes in the matching Omegon hard case with custom foam inlay. Two locks, a sturdy handle, and an impact-resistant exterior protect the optics in the car and in the attic. Purchased separately, the case costs considerably more than the price difference compared to the bare telescope.
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
- Hard case with custom foam inlay
Featured accessories
The case is included; what is still missing is the mount. We recommend the Omegon Pro Neptune fork mount with the Omegon Pro carbon tripod 40 mm. For deep-sky from a light-polluted environment: two Omegon Pro UHC nebula filters 1.25 inch.
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
| Optical design | Porro, ED-APO objectives |
| Enlargement | 30x with the supplied 18 mm eyepieces |
| Objective diameter | 100 mm |
| Focal length | 550 mm |
| Exit pupil | 3.3 mm |
| Real field of view | 2.1 degrees, 35 m per 1000 m |
| Apparent field of view | 65 degrees |
| Eye distance | 20 mm, suitable for eyeglass wearers |
| Shortest focusing distance | 25 m |
| Twilight Number | 55 |
| Insight | 90 degrees |
| Eyepieces | Interchangeable, 1.25 inch, with filter thread |
| Focus | Per eyepiece individually |
| Pupillary distance | 56 to 83 mm |
| Housing | Magnesium, waterproof, nitrogen-filled |
| Tripod connector | 1/4 and 3/8 inch, bottom |
| Dimensions | 510 x 265 x 200 mm |
| Weight watcher | 7.0 kg |
| Suitcase | Hard suitcase with foam inlay, two locks |
You can find all the large binoculars, mounts, and cases for this brand on the Omegon brand page.
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