Sky-Watcher EvoStar 120ED APO Refractor
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- Doublet apochromatic optical design
- Two-element, air-spaced optical assembly minimizes false color
- 120mm aperture, 900mm focal length, f/7.5 focal ratio
- 2-inch dual-speed Crayford-style focuser
- Aluminum tube coated with glossy, black diamond metal-flake finish
- Included accessories: two 1.25-inch eyepieces (5mm and 25mm), 2-inch Crayford-style focuser, tube rings, V-style dovetail, 8x50 right-angle finderscope, 2-inch dielectric diagonal, and foam-lined aluminum case
Sky-Watcher’s Evostar apochromatic doublet refractors are the perfect blend of superior extra-low dispersion glass and affordability. The Evostar refractor lens assembly utilizes a proprietary combination of matched lenses, delivering tack-sharp stars with charcoal-black, contrast-rich skies. All ED glass elements are fluorite-based and feature our proprietary Metallic High-Transmission Coatings™ (MHTC™), virtually eliminating all false color while internal baffle prevent stray light from affecting your photography. Like the optics, the tube is beautifully crafted using aluminum and finished with a black diamond metal-flake finish.
Using a doublet refractor instead of a triplet has some advantages: less glass means less weight, less weight means a less expensive telescope, so you can dedicate more money for your camera or laptop while benefiting from a lightweight astrophotography rig.
The Evostar 120ED # S11130 comes in a foam-lined aluminum case fully loaded with accessories, including: 2-inch Crayford-style focuser, 2-inch dielectric diagonal, two 1.25-inch eyepieces (5mm and 25mm), an 8x50 right-angle finderscope, tube rings, and a V-style dovetail.
Specifications:
Optical Info:
- Optical Design: ED Doublet
- Lens Coatings: Fully Multi-Coated
- Glass Type: BK7/FPL-53(ED)
- True Aperture (mm): 120.5
- Primary Aperture (mm): 120
- F/Ratio: 7.5
- Focal Length (mm): 900
- Dew shield OD: 143mm
Observational Info:
- Dawes Limit: 0.97
- Rayleigh Limit: 1.16
- Limiting Mag.: 12.9
- Minimum Magnification: 17
- Maximum Magnification: 236
- Light Gathering (compared to next size down): 44%
General Info:
- Focuser: 2" Dual Speed Crayford
- OTA Length (Retract/Ext.): 36"
- OTA Outer Diameter: 5.625"
- OTA Weight (with accessories): 13.9
Accessories:
- Included Finder: 8x50 RACI
- Included Diagonal: 2" Dielectric
- Mounting Accessories: Rings/V-Rail
- Included Eyepieces: 25mm LET/5 Planetary
- Magnification w/ Included Eyepieces: 45x/180x
- Included Case: Yes
- Corrector: No (optional)
Other Information
- Country of Manufacture: China
Sky-Watcher’s Evostar apochromatic doublet refractors are the perfect blend of superior extra-low dispersion glass and affordability. The Evostar refractor lens assembly utilizes a proprietary combination of matched lenses, delivering tack-sharp stars with charcoal-black, contrast-rich skies. All ED glass elements are fluorite-based and feature our proprietary Metallic High-Transmission Coatings™ (MHTC™), virtually eliminating all false color while internal baffle prevent stray light from affecting your photography. Like the optics, the tube is beautifully crafted using aluminum and finished with a black diamond metal-flake finish.
Using a doublet refractor instead of a triplet has some advantages: less glass means less weight, less weight means a less expensive telescope, so you can dedicate more money for your camera or laptop while benefiting from a lightweight astrophotography rig.
The Evostar 120ED # S11130 comes in a foam-lined aluminum case fully loaded with accessories, including: 2-inch Crayford-style focuser, 2-inch dielectric diagonal, two 1.25-inch eyepieces (5mm and 25mm), an 8x50 right-angle finderscope, tube rings, and a V-style dovetail.
Specifications:
Optical Info:
- Optical Design: ED Doublet
- Lens Coatings: Fully Multi-Coated
- Glass Type: BK7/FPL-53(ED)
- True Aperture (mm): 120.5
- Primary Aperture (mm): 120
- F/Ratio: 7.5
- Focal Length (mm): 900
- Dew shield OD: 143mm
Observational Info:
- Dawes Limit: 0.97
- Rayleigh Limit: 1.16
- Limiting Mag.: 12.9
- Minimum Magnification: 17
- Maximum Magnification: 236
- Light Gathering (compared to next size down): 44%
General Info:
- Focuser: 2" Dual Speed Crayford
- OTA Length (Retract/Ext.): 36"
- OTA Outer Diameter: 5.625"
- OTA Weight (with accessories): 13.9
Accessories:
- Included Finder: 8x50 RACI
- Included Diagonal: 2" Dielectric
- Mounting Accessories: Rings/V-Rail
- Included Eyepieces: 25mm LET/5 Planetary
- Magnification w/ Included Eyepieces: 45x/180x
- Included Case: Yes
- Corrector: No (optional)
| Manufacturer | Sky Watcher |
|---|---|
| Telescope Focal Length | 801 - 900mm |
| Optical Specs | |
|---|---|
| Mirror Coatings | N/A |
| Lens Coatings | Fully Multi-Coated |
| Glass Type | BK7/FPL-53(ED) |
| True Aperture (mm) | 120.5 |
| Primary Aperture (mm) | 120 |
| Primary Edge Thickness | N/A |
| F/Ratio | 7.5 |
| Focal Length (mm) | 900 |
| Secondary Obstruction (by diameter) | N/A |
| Secondary Obstruction by Area | N/A |
| Included Accessories | |
|---|---|
| Included Finder | 8x50 RACI |
| Included Diagonal | 2" Dielectric |
| Mounting Accessories | Rings/V-Rail |
| Included Eyepieces | 20 LET/5 Planetary |
| Magnification w/ Included Eyepieces | 45x/180x |
| Included Case | Yes |
| Corrector | No (Optional) |
| Observational Specs. | |
|---|---|
| Dawes Limit | 0.97 |
| Rayleigh Limit | 1.16 |
| Limiting Mag. | 12.9 |
| Minimum Magnification | 17 |
| Maximum Magnification | 236 |
| Light Gathering (compared to next size down) | 44% |
- Doublet apochromatic optical design
- Two-element, air-spaced optical assembly minimizes false color
- 120mm aperture, 900mm focal length, f/7.5 focal ratio
- 2-inch dual-speed Crayford-style focuser
- Aluminum tube coated with glossy, black diamond metal-flake finish
- Included accessories: two 1.25-inch eyepieces (5mm and 25mm), 2-inch Crayford-style focuser, tube rings, V-style dovetail, 8x50 right-angle finderscope, 2-inch dielectric diagonal, and foam-lined aluminum case
Sky-Watcher’s Evostar apochromatic doublet refractors are the perfect blend of superior extra-low dispersion glass and affordability. The Evostar refractor lens assembly utilizes a proprietary combination of matched lenses, delivering tack-sharp stars with charcoal-black, contrast-rich skies. All ED glass elements are fluorite-based and feature our proprietary Metallic High-Transmission Coatings™ (MHTC™), virtually eliminating all false color while internal baffle prevent stray light from affecting your photography. Like the optics, the tube is beautifully crafted using aluminum and finished with a black diamond metal-flake finish.
Using a doublet refractor instead of a triplet has some advantages: less glass means less weight, less weight means a less expensive telescope, so you can dedicate more money for your camera or laptop while benefiting from a lightweight astrophotography rig.
The Evostar 120ED # S11130 comes in a foam-lined aluminum case fully loaded with accessories, including: 2-inch Crayford-style focuser, 2-inch dielectric diagonal, two 1.25-inch eyepieces (5mm and 25mm), an 8x50 right-angle finderscope, tube rings, and a V-style dovetail.
Specifications:
Optical Info:
- Optical Design: ED Doublet
- Lens Coatings: Fully Multi-Coated
- Glass Type: BK7/FPL-53(ED)
- True Aperture (mm): 120.5
- Primary Aperture (mm): 120
- F/Ratio: 7.5
- Focal Length (mm): 900
- Dew shield OD: 143mm
Observational Info:
- Dawes Limit: 0.97
- Rayleigh Limit: 1.16
- Limiting Mag.: 12.9
- Minimum Magnification: 17
- Maximum Magnification: 236
- Light Gathering (compared to next size down): 44%
General Info:
- Focuser: 2" Dual Speed Crayford
- OTA Length (Retract/Ext.): 36"
- OTA Outer Diameter: 5.625"
- OTA Weight (with accessories): 13.9
Accessories:
- Included Finder: 8x50 RACI
- Included Diagonal: 2" Dielectric
- Mounting Accessories: Rings/V-Rail
- Included Eyepieces: 25mm LET/5 Planetary
- Magnification w/ Included Eyepieces: 45x/180x
- Included Case: Yes
- Corrector: No (optional)
Other Information
- Country of Manufacture: China
| Manufacturer | Sky Watcher |
|---|---|
| Telescope Focal Length | 801 - 900mm |
| Optical Specs | |
|---|---|
| Mirror Coatings | N/A |
| Lens Coatings | Fully Multi-Coated |
| Glass Type | BK7/FPL-53(ED) |
| True Aperture (mm) | 120.5 |
| Primary Aperture (mm) | 120 |
| Primary Edge Thickness | N/A |
| F/Ratio | 7.5 |
| Focal Length (mm) | 900 |
| Secondary Obstruction (by diameter) | N/A |
| Secondary Obstruction by Area | N/A |
| Included Accessories | |
|---|---|
| Included Finder | 8x50 RACI |
| Included Diagonal | 2" Dielectric |
| Mounting Accessories | Rings/V-Rail |
| Included Eyepieces | 20 LET/5 Planetary |
| Magnification w/ Included Eyepieces | 45x/180x |
| Included Case | Yes |
| Corrector | No (Optional) |
| Observational Specs. | |
|---|---|
| Dawes Limit | 0.97 |
| Rayleigh Limit | 1.16 |
| Limiting Mag. | 12.9 |
| Minimum Magnification | 17 |
| Maximum Magnification | 236 |
| Light Gathering (compared to next size down) | 44% |