Evostar 72ED — 72/420 ED doublet The Evostar 72ED is a compact 72 mm ED doublet with a 420 mm focal length and f/5.8 focal ratio. It offers a lightweight platform for wide-field astronomy and imaging, with low-dispersion optics and MHTC coatings to suppress false colour and improve transmission.
Manufacturer model: Evostar 72ED — 72/420 ED doublet · Specifications checked against manufacturer data on 2026-11-04
The Evostar 72ED is a compact 72 mm ED doublet with a 420 mm focal length and f/5.8 focal ratio. It offers a lightweight platform for wide-field astronomy and imaging, with low-dispersion optics and MHTC coatings to suppress false colour and improve transmission.
Tube and mounting
The internally baffled aluminium tube has a Black Diamond finish. Tube rings and a V-style dovetail provide the mounting interface, and a foam-lined aluminium case is supplied for storage and transport.
Model identification
This is the original 72ED specification, rather than the shorter Japanese 72ED II revision. The global manufacturer page gives a 2 kg OTA weight and 420 mm tube length.
Original global 72ED retained. Manufacturer table incorrectly labels 144× as focuser diameter; that entry is omitted rather than inventing a focuser dimension. Japanese 72ED II dimensions are not substituted.
SW0409
Fiche technique
Diamètre (mm)
72
Étui
Foam-lined aluminium
Traitements
MHTC fully multi-coated
Focale (mm)
420
Rapport F/D
f/5.8
Modèle
Evostar 72ED — 72/420 ED doublet
Montage
Tube rings and V-style dovetail
Formule optique
ED doublet apochromatic refractor
Longueur du tube optique (mm)
420
Poids du tube optique (kg)
2
Matériau du tube
Aluminium; Black Diamond finish
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Evostar 72ED — 72/420 ED doublet The Evostar 72ED is a compact 72 mm ED doublet with a 420 mm focal length and f/5.8 focal ratio. It offers a lightweight platform for wide-field astronomy and imaging, with low-dispersion optics and MHTC coatings to suppress false colour and improve transmission.
Manufacturer model: Evostar 72ED — 72/420 ED doublet · Specifications checked against manufacturer data on 2026-11-04
