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4.8 37 online reviews

120° Series 9mm Waterproof Eyepiece

Sale price$899.99

The Explore Scientific 9mm 120° Series eyepiece really is in a class by itself. The 120° apparent field of view is unlike anything you have experienced before. Normally, when we look through hyper wide field eyepieces, we see a huge swath of the night sky at low magnification. With the 9mm 120°, however, you see even more universal real estate, but you also see the main attraction, whether it is a nebulae, a galaxy, or a star cluster, close up and personal. In our opinion, it is the best of both worlds.

With such a wide field, you will also notice that objects stay in the field of view for a long time. This is especially noticeable when your telescope does not have a drive, like a Dobsonian or a refractor on a grab and go mount like the Explore Scientific Twilight I. Another great benefit of hyper-wide eyepieces is the ease with which you can gaze, not directly at an object, but slightly to either side. This skill, called using averted vision, is especially helpful when observing faint objects, because using averted vision puts the image on a part of your eye that is more sensitive to light, allowing you to see fainter images.

Item Number EPWP12009–01
Focal Length 9mm
Length 145mm
Width 60mm
Weight 21.2oz; 602g
Barrel Size 2.00"
Eye Relief 12.5mm
Field Stop Diameter 15.7mm

120° Series 9mm Waterproof Eyepiece
120° Series 9mm Waterproof Eyepiece Sale price$899.99

4.8

37 online ratings
The summary star rating & review is based on aggregated reviews of this product across the web. It cannot be altered by the merchant and can be verified by emailing support@onereview.app.

Online Reviews

4.8

37 online ratings
The summary star rating & review is based on aggregated reviews of this product across the web. It cannot be altered by the merchant and can be verified by emailing support@onereview.app.

What people like

The Explore Scientific 100° Series 3" 30mm Waterproof Eyepiece is a monumental, observatory-class ocular that offers one of the most immersive and expansive panoramic views available in modern amateur astronomy. Expertly crafted with eight optical elements and argon-purged for complete waterproof and fog-proof integrity, this massive eyepiece creates a breathtaking "spacewalk" effect that makes the hardware seemingly disappear between the observer and the cosmos. Its specialized 3-inch barrel design allows for a colossal 52.2mm field stop, ensuring that large-scale celestial structures like the Rosette Nebula can be viewed in their entirety with stunning contrast and edge-to-edge sharpness.
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