Esprit 100mm ED Triplet APO Refractor-0
Esprit 100mm ED Triplet APO Refractor-0Esprit 100mm ED Triplet APO Refractor-677Esprit 100mm ED Triplet APO Refractor-678Esprit 100mm ED Triplet APO Refractor-679Esprit 100mm ED Triplet APO Refractor-680Esprit 100mm ED Triplet APO Refractor-681Esprit 100mm ED Triplet APO Refractor-682Esprit 100mm ED Triplet APO Refractor-683Esprit 100mm ED Triplet APO Refractor-684

Esprit 100mm ED Triplet APO Refractor

$2,499.00

  • 100 mm apochromatic 3-element refractor
  • 550 mm (f/5.5)
  • Fully multi-coated
  • Thread-on field flattener
  • 3.4″ focuser w/micro focus
  • 2″ Diagonal with dielectric coatings
  • 8×50 RA erect-image finderscope
  • Canon camera adapter
  • Tube rings with CGE style dovetail bar
  • Aluminum foam lined case
  • 40mm image circle
  • OTA Weight: 16.3lbs.
  • OTA Length: 24.5″ Extended and 17.3125″ Retracted
  • Back focus: 68.819mm
SKU: S11410 Category:

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Product Description

Designed with the discerning astrophotographer in mind, Sky-Watcher USA’s top-of-the-line Esprit refractors deliver the kind of imaging performance one would expect from telescopes costing thousands of dollars more.

With their three-element air spaced objective lens design, false color is completely eliminated, yielding exceptional contrast and sharpness. The included 2-element field corrector guarantees a flat field across the entire imaging plane. The Sky-Watcher exclusive Helinear Track focusing system provides a smooth, rock-solid focuser with zero image shift.

All Sky-Watcher USA Esprit refractors come with a 8 x 50 right angle finderscope, 2-inch Star diagonal, 2-element field flattener*, camera adapter, D-style dovetail and padded case. Everything you need to get out under the stars.

Additional Information

Optical Design

ED Triplet

Primary Aperture (mm)

100mm (4″)

Focal Ratio

5.5

Focal Length (mm)

550mm

Glass Type

Schott/Ohara ED

Lens Coatings

Fully Multi-Coated

OTA Length

Dew Shield Retracted: 18.3″ Dew Shield Extended: 24.5″

OTA Outer Diameter

5.75″

OTA Weight (with accessories)

16 lbs.

Focuser

3.4″ Dual Speed R&P

Included Eyepieces

None

Included Diagonal

2″ Dielectric

Included Finder

8×50 Right Angle Correct Image

Includes Case

Yes

Mounting Accessories

Rings/D-Rail

Corrector

Yes, included field flattener.

Image Circle (w/ Flattener)

40mm

Other Included Items

Canon 48mm camera adapter with spacers

Dawes Limit

1.16

Rayleigh Limit

1.4

Limiting Magnitude

12.5