Field flattener included; spacing depends on adapter
Corrected field
Included 2-element threaded field flattener
Mechanical
Focuser
2-inch Helinear Track rack-and-pinion focuser
Weight
7.4 kg / 16.3 lb
Tube length
620 mm
Astrophotography Fit
Best for wide-to-mid-field nebulae and general deep-sky imaging when the mount, camera format, and correction hardware are chosen as one system.
Sky-Watcher Esprit 100ED sits in the telescope slot for wide-to-mid-field nebulae and general deep-sky imaging. The useful headline specs are aperture 100 mm, focal length 550 mm, f/5.5.
Camera coverage: APS-C / full-frame depending on flattener setup. Back focus: Field flattener included; spacing depends on adapter.
Refractors keep the field routine calmer: no regular collimation, predictable cooldown, and a clean path to autofocus and filtered imaging. The tradeoff is aperture and reach.
Weight matters here: 7.4 kg / 16.3 lb. Leave payload headroom for the camera, guider, focuser, dew control, and cables instead of judging the mount by bare tube weight alone.
Best paired with
Corrected field flattener or reducer when the design requires one
Cooled APS-C or smaller astro cameras matched to the image circle
Autofocus, guide scope or OAG, and a mount with comfortable payload margin
Not recommended for
Large full-frame sensors unless the corrected field supports them
Very small travel mounts near their realistic imaging payload limit
Buyers expecting one telescope to be ideal for every target size
Where To Buy
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Astronomics (Out of stock)