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Description
Sky-Watcher 5" f/12.1 Maksutov-Cassegrain Telescope (OTA Only)5" 127mm Aperture 1540mm Focal Length, f 12. 1 Focal Ratio Limited Diffraction Optical System Anti Reflection Fully Multicoated Optics Internal Primary Mirror Focusing System 28mm LET 2" Eyepiece 2" 90 Star Diagonal 6x30 Straight View Finderscope Vixen Style Dovetail Plate Similar to their Schmidt cousins, this 5" f 12. 1 Maksutov Cassegrain Telescope from Sky Watcher exchanges the front corrector plate with a convex meniscus lens which not only
- 5" / 127mm Aperture
- 1540mm Focal Length, f/12.1 Focal Ratio
- Limited-Diffraction Optical System
- Anti-Reflection Fully Multicoated Optics
- Internal Primary Mirror Focusing System
- 28mm LET 2" Eyepiece
- 2" 90° Star Diagonal
- 6x30 Straight View Finderscope
- Vixen-Style Dovetail Plate
Similar to their Schmidt cousins, this 5" f/12.1 Maksutov-Cassegrain Telescope from Sky-Watcher exchanges the front corrector plate with a convex meniscus lens which not only eliminates the need for periodic collimation, but the nature of the lens requires a smaller secondary mirror which limits obstruction and increases contrast. The Mak-Cass optical path results in a slower focal ratio and narrower field of view versus a similar Schmidt-Cass, but the optical benefits makes this an ideal scope for planetary and double-star observation.
The scope is outfitted with a 2" back focus and to get users started, Sky-Watcher includes a 28mm eyepiece with a 2" barrel that produces 55x power and a 90° star diagonal for viewing with the OTA pointed at or near the celestial zenith. The OTA is offered here without a mount or tripod for users that have a platform, or want to use it as part of a dual-OTA set up for star-parties or observation/imaging rigs. It is outfitted with a Vixen-style dovetail plate for use with compatible equatorial or alt-az mounts. This OTA's compact form-factor belies its observation power and resolution and is ideally suited as a grab-and-go option for quick observation sessions or heading out to remote locations.
- Optical Performance
-
- 5" / 127mm aperture
- f/12.1 focal ratio
- 1540mm focal length
- Front convex meniscus lens corrects spherical and chromatic aberrations, and comas (off-axis aberration) across the entire field of view
- Smaller secondary mirror versus Schmidt-Cassegrains reduces obstructions and increases contrast
- Anti-reflection fully multicoated optics reduce light loss for increased image brightness
- Mounting
-
- Requires user-supplied mount and tripod
- Vixen-style dovetail plate
- OTA and accessories weigh 9.7 pounds
- Focuser
-
- Internal primary mirror focus
- 2" diameter visual back accepts larger eyepieces
- Large rubberized focus knob
- Optical Accessories
-
- 28mm 2" LET eyepiece yields 55x power
- 6x30 straight view finderscope
- 2" 90° star diagonal
| Optical Design | Maksutov-Cassegrain |
| Aperture | 5" / 127 mm |
| Focal Length | 1540 mm |
| Focal Ratio | f/12.1 |
| Eyepiece Barrel Diameter | 2" |
| Diagonal | 90° star |
| Finderscope | 6x30 straight view |
| Tripod | None |
| Mount Type | Vixen-style dovetail plate |
| Power Source | N/A |
| Optical Tube Dimensions | Not specified by manufacturer |
| Weight | 9.7 lb / 4.4 kg |
| Packaging Info | |
|---|---|
| Package Weight | 12.8 lb |
| Box Dimensions (LxWxH) | 28.1 x 9.7 x 9.2" |
- 90° Star Diagonal, 2" Barrel
- 28mm Eyepiece, 2" Barrel
- 6x30 straight view Finderscope
- Limited Two-Year Warranty
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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]
- Please click here for more details>>> Return & Exchange Policy