Sky-Watcher Evostar 100 Doublet APO (S11120)

Sky-Watcher Evostar 100 Doublet APO

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 triple-baffles 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 100ED 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.

 

• Doublet apochromatic optical design
• Two-element, air-spaced optical assembly minimizes false color
• 100mm aperture, 900mm focal length, f/9 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

Technical Specifications

Optical Info
Optical Design	ED Doublet
Lens Coatings	Fully Multi-Coated
Glass Type	BK7/FPL-53(ED)
True Aperture (mm)	100
Primary Aperture (mm)	100
F/Ratio	9
Focal Length (mm)	900
Observational Info
Dawes Limit	1.16
Rayleigh Limit	1.4
Limiting Mag.	12.5
Minimum Magnification	14
Maximum Magnification	197
Light Gathering (compared to next size down)	56%
General Info
Focuser	2" Dual Speed Crayford
OTA Length (Retract/Ext.)	34"
OTA Outer Diameter	4.5625"
OTA Weight (with accessories)	8.4
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)

In the Box

• Sky-Watcher Evostar 100 Doublet APO
  
• 2 x 1.25" Eyepieces (5mm and 25mm)
• 2" Crayford-style focuser
• Tube rings
• V-style dovetail
• 8x50 Right-angle Finderscope,
• 2" Dielectric Diagonal
• Aluminum case

Warranty & Manuals

Sky-Watcher 2-Year Warranty