The Sky-Watcher 100mm Esprit 100ED Triplet APO Refractor is a professional instrument for the most demanding and exacting astro-photographers.
The air spaced apochromatic triplet lenses use the remarkable Ohara FPL-53 ED (extra low dispersion) glass, with exceptional colour correction over the entire visible spectrum there is no chromatic aberration even on bright objects!
Each element is fully multi-coated with Sky-Watcher’s proprietary Metallic High-Transmission Coatings™ (MHTC)™, producing a transmission rate that rivals any refractor on the market.
Key features:
$4,599.00 Original price was: $4,599.00.$3,999.00Current price is: $3,999.00. inc GST
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Add to cartThe Sky-Watcher 100mm Esprit 100ED Triplet APO Refractor incorporates an air spaced 100mm Apochromatic Triplet lens system. made from FPL-53 extra low dispersion glass with knife edge baffles reduce internal reflections and increase contrast, helping to bring out faint structure in deep sky objects.
A 2-element field flattener is included to iron out the natural off-axis astigmatism and field curvature of the objective lens, leaving a fully corrected 42mm field of view.
The Sky-Watcher exclusive Helinear Track 11:1 dual speed focuser is rock solid with zero image shift and a 3″ barrel to avoid vignetting. Designed with photography in mind, it sits on two tracks above and below the barrel to prevent flexure with a heavy camera attached, and is fully rotatable to perfectly frame a target on the sensor.
In The Box:
Model | SWESPRIT100 |
Optical Design | Airspaced Apochromatic Triplet |
Aperture | 100 |
Focal Length | 550mm |
Focal Ratio | f/5.5 |
Diameter of the corrected field | 40mm |
Visual Back Focus | 185mm |
Resolving Power | 1.20″ |
Stellar Limit Magnitude | 12.0 |
Highest Practical Magnification | 200X |
Light gathering power (compared to the unaided eye) | 204 |
Focuser | 3″ Crayford dual speed with 2″ and 1.25″ adaptor |
Optical Tube Length | 465mm |
Optical Tube Weight | 6.15kg |