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Description
Alpine Astronomical Baader Hyperion 8-24 mm Mark IV Zoom Eyepiece (1.25"/2")8 24mm Zoom Focal Length Phantom Coating Group Multi Coatings 7 Element 4 Group Flat Field Lens Design 1. 25" and 2" Diameter Barrel Options 2" Standard SCT Visual Back Adapter Parfocal through Entire Zoom Range Three Interchangeable Eyecups T Mount for Optional Camera T Ring Outfitted with a wide and useful focal length range that is ideal for all kinds of astronomical observation and astrophotography, the Alpine Astronomical Baader Hyperion 8 24 mm
- 8-24mm Zoom Focal Length
- Phantom Coating Group Multi-Coatings
- 7-Element/4-Group Flat-Field Lens Design
- 1.25" and 2" Diameter Barrel Options
- 2" Standard SCT Visual Back Adapter
- Parfocal through Entire Zoom Range
- Three Interchangeable Eyecups
- T-Mount for Optional Camera T-Ring
Outfitted with a wide and useful focal length range that is ideal for all kinds of astronomical observation and astrophotography, the Alpine Astronomical Baader Hyperion 8-24 mm Mark IV Zoom Eyepiece will be an invaluable addition to your telescope kit.
Its performance starts with a 7-element/4-group flat-field lens design that is treated with Phantom Coating Group multi-coatings. These features work together to deliver clear and bright high-contrast views with edge-to-edge sharpness without distortion or astigmatism. A simple rotating selection system allows users to run through the focal length range with positive click-stops at each setting, and for ease-of-use the eyepiece is parfocal so there will be little to no need to refocus when moving from one focal length to the next.
The Mark IV has been engineered for use on a wide variety of gear and comes with nosepieces to fit standard 1.25" drawtubes and accessories with the option to swap it for a 2" nosepiece or an adapter to thread onto standard 2" Schmidt-Cassegrain telescope (SCT) visual backs. Removing the eyecup reveals M43 T-mount threads that accept optional camera-specific T-rings for projection astrophotography techniques. For comfortable viewing, the eyepiece comes with three interchangeable eyecups: a fold-down rubber version, a winged model, and a large twist-up adjustable option.
From the moon to the planets to deep sky objects, the Mark IV zoom eyepiece provides versatility that is easy to use.
- Optical Performance
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- 7-element/4-group flat-field lens design maintains edge-to-edge sharpness
- Phantom Coating Group multi-coated optics maximize light transmission for improved contrast and clarity
- All focal length options are parfocal, requiring little to no refocusing when moving through the entire zoom range
- Variable Focal Length
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- Change magnification by selecting a longer (low power) or shorter (high power) focal length
- Selectable focal length for 8mm, 12mm, 16mm, 20mm, and 24mm
- Field of view, eye relief, and field stop distance change based on focal length setting
- Positive click-stops provide tactile feedback for each focal length selection
- Telescope Adapters
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- 1.25" nosepiece fits the most common-size drawtubes and accessories, threaded for standard 1.25" filters
- 2" nosepiece allows it to fit larger drawtubes and focusers, threaded for standard 2" filters
- Standard 2" SCT visual back female threads for direct connection to optical tube assembly
- Spotting scope adapter: For use on those spotters that accept astronomical eyepieces, it provides 4mm additional back focus to allow it to achieve the proper focus at infinity
- Camera Connections
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- M43 photo/video thread on top of the eyepiece to directly attach most video cameras
- Allows attachment of any desired DSLR or T-2 accessory by means of the optional T-rings and camera-specific T-mounts
- Remove eyecup to reveal adapter threads
- Optional extension tubes may be required for full-frame and APS-C cameras
- Eyecup Options
-
- Winged rubber eyecup blocks peripheral terrestrial light to improve contrast and eliminate distractions
- Fixed folding rubber eyecup allows easy use with or without eyewear
- Large adjustable twist-up eyecup provides precise eye relief setting
| Focal Length | 8 - 24x |
| Barrel Diameter | 1.25", 2" |
| Eye Relief | 8mm focal length: 19mm 12mm focal length: 18.2mm 16mm focal length: 17.4mm 20mm focal length: 16.7mm 24mm focal length: 16.0mm |
| Field Stop Diameter | 8mm focal length: 9.5mm 12mm focal length: 13.2mm 16mm focal length: 16.2mm 20mm focal length: 18.5mm 24mm focal length: 20.1mm |
| Apparent Field of View | 8mm focal length: 68° 12mm focal length: 63° 16mm focal length: 58° 20mm focal length: 53° 24mm focal length: 48° |
| Dimensions | 4.0" / 101.5 mm |
| Weight | 10.2 oz / 290.0 g, with 1.25" adapter 10.9 oz / 309.0 g, with 2" adapter |
| Package Weight | 1.1 lb |
| Box Dimensions (LxWxH) | 6.6 x 3.1 x 3.0" |
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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