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Questions & Answers

FAQ

What is the purpose of the three-element air spaced objective lens system in the Sky-Watcher Esprit 100mm ED Triplet APO Refractor?

The three-element air spaced objective lens system is designed to eliminate false color in the images. This results in high contrast and sharp images, allowing for superior views and photographs of celestial objects.

What does the 2-element field corrector do in the Sky-Watcher Esprit 100mm ED Triplet APO Refractor?

The 2-element field corrector ensures a flat field across the entire imaging plane. This is essential for astrophotography as it means stars will appear pinpoint sharp right to the edge of your photographs.

What is the Helinear Track focusing system in the Sky-Watcher Esprit 100mm ED Triplet APO Refractor?

The Helinear Track focusing system is Sky-Watcher's exclusive feature that provides a smooth, rock-solid focuser with zero image shift. This is critical for achieving high-quality astrophotographs.

What accessories are included with the Sky-Watcher Esprit 100mm ED Triplet APO Refractor?

The Sky-Watcher Esprit 100mm ED Triplet APO Refractor comes with a 9 x 50 right angle finderscope, 2-inch Star diagonal, 2-element field flattener, camera adapter, D-style dovetail, and a padded case.

Is the Sky-Watcher Esprit 100mm ED Triplet APO Refractor suitable for astrophotography?

Yes, the Sky-Watcher Esprit 100mm ED Triplet APO Refractor is specially designed with astrophotography in mind. Its advanced features and included accessories make it an excellent choice for capturing high-quality images of celestial objects.

PHILIP I : what mount will this work with?Michael T : The telescope is made to fit any mount with a D style or Losmandy saddle.AUGUSTINE O : The Skywatcher EQ6-R pro will work will well for this. I use both the Esprit 80 and the Esprit 120 on the EQ6-R, so the Esprit 100 will do just as well on this mount.JIM Z : Celestron CGX is what i am using
Shopper : Why Did You Choose This?ALOK B : Quality lens.

Reviews about this item

Review Summary

2022-01-30T07:46:57

Rated 5 out of 5

Jaw dropping first light with cautionary warning about iOptron mounts.

First light was a view of the waxing gibbous moon. Wow! Wow! Wow! Best view of the moon I?ve ever had! What a great moment for first light! There was a thin rim of dark blue aberration very close to the edge of the field but with target centered it was not noticeable. Only when the moon drifted slightly off center with its edge leaving the FoV was this apparent. Next, my mount (iOptron CEM 120) went haywire and I haven?t had a look since. Mount is back in iOptron lab getting fixed now. I strongly caution AGAINST iOptron equipment. This is the second one I?ve had that went south. Support is poor, product more so. But not the SkyWatcher 150! I was soooo thrilled with the view. I can?t wait until my mount gets back!

MARK B.

2017-03-09T11:22:09

Rated 5 out of 5

Excellent telescope

Excellent telescope. Arrived in perfect condition. Views through it are amazing. I mounted it on an AZ-4 alt-az tripod using a 7" Losmandy V-plate, no problems. Can't wait to try it out in Costa Rica later this month! Highly recommended.

STEVEN H.

2017-02-04T08:44:22

Rated 5 out of 5

Y already have two Catadioptrics. The refractor is a good complement por astrophotography. Quality is very good

I am very happy with my new scope. Thanks for your prompt delivery

miguel p.

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Sky-Watcher Esprit Telescope Specifications

  • Optical Design

    ED Triplet

  • Focal Length

    550mm

  • Aperture

    100mm (4")

  • Focal Ratio

    F/5.5

  • Lens Glass

    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

    8½50 Right Angle Correct Image

  • Mounting Accessories

    Rings/D-Rail

  • Corrector

    Yes, included flattener.

  • Image Circle (w/ Flattener)

    40mm

  • Dawes Limit

    1.16

  • Rayleigh Limit

    1.4

  • Limiting Magnitude

    12.5

  • UPC Code

    050234114103

23 Accessories for Sky-Watcher Esprit 100mm ED Triplet APO Refractor

  • All Accessories (23)
  • Eyepieces & Accessories (8)
  • Filters (1)
  • Tripods (2)
  • Mount Accessories (1)
  • Photography Adapters (4)
  • T-Mounts (7)

About Sky-Watcher Esprit Telescope

FEATURED REVIEWS

Excellent telescope

By STEVEN H.

Excellent telescope. Arrived in perfect condition. Views through it are amazing. I mounted it on an AZ-4 alt-az tripod using a 7" Losmandy V-plate, no problems. Can't wait to try it out in Costa Rica later this month! Highly recommended.

Jaw dropping first light with cautionary warning about iOptron mounts.

By MARK B.

First light was a view of the waxing gibbous moon. Wow! Wow! Wow! Best view of the moon I?ve ever had! What a great moment for first light! There was a thin rim of dark blue aberration very close to the edge of the field but with target centered it was not noticeable. Only when the moon drifted slightly off center with its edge leaving the FoV was this apparent. Next, my mount (iOptron CEM 120) went haywire and I haven?t had a look since. Mount is back in iOptron lab getting fixed now. I stro...

View full Review

What sets the Sky-Watcher Esprit 100mm ED Triplet APO Refractor apart is its exquisite engineering, tailored for the astrophotography enthusiast who demands nothing but the best. This premium-grade telescope is a testament to Sky-Watcher USA's commitment to superior imaging performance, rivaling that of telescopes with a significantly higher price tag.

Crafted with precision, the Esprit 100mm features an advanced three-element air spaced objective lens system, meticulously designed to eliminate false color. This results in exceptionally high contrast and razor-sharp images, allowing you to capture the cosmos with unparalleled clarity. The telescope's large 4" (100mm) aperture ensures an abundant influx of light, providing bright and vivid views of celestial wonders.

The inclusion of a 2-element field corrector is a game-changer, ensuring a perfectly flat field across the entire imaging plane, which is essential for astrophotography. This means stars will appear pinpoint sharp right to the edge of your photographs, a feature that discerning photographers will appreciate.

Sky-Watcher's exclusive Helinear Track focusing system is another innovative feature that sets this refractor apart. It offers a smooth focusing experience with a robust and stable mechanism, ensuring zero image shift even when you're adjusting focus, which is critical for achieving high-quality astrophotographs.

This high-quality, durable, and sturdy telescope comes equipped with a suite of accessories to enhance your stargazing experience. Included are a 9 x 50 right-angle finderscope for easy navigation of the night sky, a 2-inch Star diagonal for comfortable viewing, a 2-element field flattener for edge-to-edge sharpness, a camera adapter for easy attachment of your DSLR or CCD camera, a D-style dovetail for secure mounting, and a padded case for safe transport and storage.

Whether you're planning to explore the night sky from your backyard or take it on an adventure to remote locations like Costa Rica, the Sky-Watcher Esprit 100mm ED Triplet APO Refractor is a high-performance instrument that promises to elevate your astronomical observation and astrophotography to new heights.

Sky-Watcher Esprit Telescope Features

  • Advanced three-element air spaced objective lens system for sharp, high-contrast images
  • Large 4" (100mm) aperture for bright and vivid celestial views
  • 2-element field corrector ensuring a flat field across the entire imaging plane
  • Sky-Watcher's exclusive Helinear Track focusing system for smooth, zero image shift focusing
  • Comprehensive accessory kit including a right-angle finderscope, Star diagonal, field flattener, camera adapter, and D-style dovetail
  • Durable and sturdy design, perfect for astronomical observation and astrophotography

Key Features

  • Advanced three-element air spaced objective lens system for sharp, high-contrast images
  • Large 4" (100mm) aperture for bright and vivid celestial views
  • 2-element field corrector ensuring a flat field across the entire imaging plane
  • Sky-Watcher's exclusive Helinear Track focusing system for smooth, zero image shift focusing
  • Durable and sturdy design, perfect for astronomical observation and astrophotography

What's in the box:

  • 100mm apochromatic 3-element refractor
  • Thread-on field flattener
  • 2.7 " focuser w/micro focus
  • 2 " Diagonal with dielectric coatings
  • 8x50 RA erect-image finderscope
  • Canon 48mm camera adapter with spacers
  • Tube rings with CGE style dovetail bar
  • Aluminum foam lined case