Sky-Watcher Skymax 180 7" Optical Tube Only - S11540
Highlights
- Maksutov-Cassegrain optical design
- Primary and secondary mirrors feature proprietary Radiant Aluminum Quartz™ (RAQ™) coatings
- Corrector plate featuring Metallic High-Transmission Coatings (MHTC) virtually eliminates chromatic aberrations
- 180mm aperture, 2700mm focal length
- Aluminum tube coated with glossy, black diamond metal-flake finish
- Included accessories: a 2-inch 28mm eyepiece, a 9x50 finder scope, and a 2-inch diagonal
The Sky-Watcher Skymax Maksutov-Cassegrains are the ultimate take-anywhere telescopes. Despite their small dimensions they pack a powerful punch. Their high-resolution, diffraction-limited optical systems are multi-coated to maximize contrast and image sharpness.
Note: This is the optical tube only and requires a mount or tripod. It does not include a 2" to 1.25" eyepiece adapter. If required, an Antares MDA is a good choice.
Specifications
| SKU | S11540 |
| UPC | 050234115407 |
| Optical Info | |
|---|---|
| Optical Design | Mak-Cass |
| Mirror Coatings | 94% Aluminum |
| Lens Coatings | Fully Multi-Coated |
| Glass Type | BK7/Borosilicate |
| True Aperture (mm) | 182 |
| Primary Aperture (mm) | 199 |
| F/Ratio | 15 |
| Focal Length (mm) | 2700 |
| Secondary Diameter | 41mm |
| Secondary Obstruction (by diameter) | 23% |
| Secondary Obstruction by Area | 5% |
| Observational Info | |
| Dawes Limit | 0.64 |
| Rayleigh Limit | 0.78 |
| Limiting Mag. | 13.8 |
| Minimum Magnification | 26 |
| Maximum Magnification | 354 |
| Light Gathering (compared to next size down) | 44% |
| General Info | |
| Focuser | Primary Mirror |
| OTA Length (Retract/Ext.) | 22" |
| OTA Outer Diameter | 8.625" |
| OTA Weight (with accessories) | 19 lbs |
| Accessories | |
| Included Finder | 9x50 Finder |
| Included Diagonal | 2" Star Diagonal |
| Mounting Accessories | V-Rail |
| Included Eyepieces | 28 LET |
| Magnification w/ Included Eyepieces | 96.4x |
| Included Case | No |
| Corrector | No |
| Shipping Weights & Dimensions | |
Original: $1,233.79
-65%$1,233.79
$431.83Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Highlights
- Maksutov-Cassegrain optical design
- Primary and secondary mirrors feature proprietary Radiant Aluminum Quartz™ (RAQ™) coatings
- Corrector plate featuring Metallic High-Transmission Coatings (MHTC) virtually eliminates chromatic aberrations
- 180mm aperture, 2700mm focal length
- Aluminum tube coated with glossy, black diamond metal-flake finish
- Included accessories: a 2-inch 28mm eyepiece, a 9x50 finder scope, and a 2-inch diagonal
The Sky-Watcher Skymax Maksutov-Cassegrains are the ultimate take-anywhere telescopes. Despite their small dimensions they pack a powerful punch. Their high-resolution, diffraction-limited optical systems are multi-coated to maximize contrast and image sharpness.
Note: This is the optical tube only and requires a mount or tripod. It does not include a 2" to 1.25" eyepiece adapter. If required, an Antares MDA is a good choice.
Specifications
| SKU | S11540 |
| UPC | 050234115407 |
| Optical Info | |
|---|---|
| Optical Design | Mak-Cass |
| Mirror Coatings | 94% Aluminum |
| Lens Coatings | Fully Multi-Coated |
| Glass Type | BK7/Borosilicate |
| True Aperture (mm) | 182 |
| Primary Aperture (mm) | 199 |
| F/Ratio | 15 |
| Focal Length (mm) | 2700 |
| Secondary Diameter | 41mm |
| Secondary Obstruction (by diameter) | 23% |
| Secondary Obstruction by Area | 5% |
| Observational Info | |
| Dawes Limit | 0.64 |
| Rayleigh Limit | 0.78 |
| Limiting Mag. | 13.8 |
| Minimum Magnification | 26 |
| Maximum Magnification | 354 |
| Light Gathering (compared to next size down) | 44% |
| General Info | |
| Focuser | Primary Mirror |
| OTA Length (Retract/Ext.) | 22" |
| OTA Outer Diameter | 8.625" |
| OTA Weight (with accessories) | 19 lbs |
| Accessories | |
| Included Finder | 9x50 Finder |
| Included Diagonal | 2" Star Diagonal |
| Mounting Accessories | V-Rail |
| Included Eyepieces | 28 LET |
| Magnification w/ Included Eyepieces | 96.4x |
| Included Case | No |
| Corrector | No |
| Shipping Weights & Dimensions | |
