Bresser AC 102/460 Messier Hexafoc Refractor OTA

Description

Framing large open clusters in one view, the Bresser AC 102/460 Messier Hexafoc Refractor OTA is a genuine rich-field scope at f/4.5, fast enough to frame sweeping nebula fields in a single view, the kind of ratio built for width over magnification. This version ships as a bare optical tube, no mount included.

At 2.8kg, this tube needs a mount rated for at least 5kg once an eyepiece and diagonal are attached. The 2-inch zenith mirror here matters more than on a slower scope — wider eyepieces genuinely widen the already-broad field this f/4.5 ratio delivers, and the integrated piggyback camera mount adds flexibility for anyone wanting to pair this tube with an existing imaging setup rather than buying a dedicated wide-field lens separately.

Key Features of Bresser AC 102/460 Messier Hexafoc Refractor OTA

A 102mm achromatic objective at f/4.5 resolves down to 1.14 arcseconds, built specifically for wide-field rich views rather than planetary magnification.

• 102mm aperture at f/4.5 frames large open clusters and nebula fields in a single view
• 2.5-inch Hexafoc heavy-duty focuser holds a 2-inch eyepiece steady without flexing
• 2-inch zenith mirror maximizes this fast ratio’s already-wide true field
• Integrated piggyback camera mount lets this tube ride alongside a second scope
• 6×30 optical finder scope speeds up target acquisition before switching eyepieces
• Magnification range from 15x to 200x covers both rich-field and closer views
• Fast cooldown time suits a spontaneous session on a clear, cold night

What Sets the AC 102/460 OTA Apart

Every mounted version of this same 102mm tube shares identical optics — this OTA-only version suits buyers who already own a mount rated for 5kg and want this specific fast, rich-field optical formula for wide star fields and comet scouting.

Applications & Use Cases

Built for rich-field deep-sky observation, this telescope also suits secondary wide-field tracking alongside an independent mount for an observer expanding an existing setup.

• Observers who already own a mount and want a dedicated wide-field tube
• Comet-watchers who need a fast, wide true field over magnification
• Anyone wanting a second tube for wide-field guiding on imaging nights

Bresser Warranty & Support

The AC 102/460 OTA carries a 2-Year Factory Warranty covering manufacturing defects, handled directly through Bresser’s support channel.