Sky-Watcher Professional ESPRIT 3-Element ED apochromatic refractors offer optical performance rivaling or exceeding similar telescopes from even the most famous high-end brands.
Designed primarily for demanding astro-imagers wanting high-contrast images full of detail and zero detectable colour fringing, even on the brightest of objects!
An M48-fitting doublet field flattener is also available to flatten the field and minimize aberration and distortion. When used with the field flattener the Esprit-100's imaging circle is 40mm.
The M48 fitting provides a large clear aperture to reduce halation and a precision thread ensures the triplet and doublet lens groups are precisely aligned on the optical axis perpendicular to the image.
Price includes storage case
Premium optical materials
Short focal length and full frame corrected focal plane
Excellent field flatness across a 40mm imaging circle when used with the optically-matched flattener
Precision linear power focuser
Metallic high-transmission lens coatings
Light-baffled optical systems
Telescope tube attachment hardware
Knife-edge Baffled Optical System
3” Dual Speed Linear Power Focuser
3” LPF with 2” and 1.25” eyepiece adaptors and indexed scale
Zero focus-shift during focusing
High Load Capacity
New drawtube with steel sheet held by four large bearings makes focusing smoother than ever
The smooth focus motion and 11:1 fine focus wheel allows precision adjustment and critical focusing of eyepieces & cameras
Optical Design : Apochromatic Triplet with ED element
Diameter : 100mm
Focal Length : 550mm
F-ratio : f/5.5
Linear Power Focuser Diameter : 3"
Tube Weight : 6.3 kg
Tube Dimensions : 10.5 x 47 cm
Terms and Conditions
Copyright ©2012 Ian King Imaging Ltd.
Site built by Savagescape Ltd.