Bresser AC 90/900 Messier EXOS 2 GoTo Telescope

Description

Minimizing rotational torque and drift, the Bresser AC 90/900 Messier EXOS 2 GoTo Telescope shares the same long-focus 90mm tube as the manual versions in this line, now on the EXOS-2 platform with dual-axis motorized tracking built to minimize alignment drift — genuinely useful at f/10, where a narrower field shows drift faster than a wide-field scope would.

An illuminated 6×30 finder simplifies two-star alignment in the dark, and once tracking, the ultra-stable heavy-duty platform keeps rotational torque from nudging a planet out of frame during a long session. Power comes from 8x D-cell batteries or an optional AC-DC adapter, and the two included counterweights handle a heavier eyepiece or small guide camera without needing to add hardware separately.

Key Features of Bresser AC 90/900 Messier EXOS 2 GoTo Telescope

An ultra-stable heavy-duty platform paired with dual-axis motorized tracking minimizes the alignment drift this focal ratio’s narrower field is prone to, solving a real limitation of manual tracking at this speed.

• Dual-axis motorized tracking minimizes rotational torque and alignment drift
• Hand controller’s database locates catalogued targets without star-hopping
• 6×30 illuminated finder scope simplifies two-star alignment after dark
• Two included 4.5kg counterweights balance heavier accessory loads
• Runs on 8x D-cell batteries or an optional AC-DC adapter
• 2-inch zenith mirror accepts wider-field eyepieces than the OTA version
• Ultra-stable platform holds a target framed through an extended planetary session

The Case for the EXOS-2 GoTo

Against the manual EXOS-1 sharing this same tube, the GoTo version’s motorized tracking directly addresses this focal ratio’s tendency to drift a target out of frame — worth it for anyone doing extended planetary sessions rather than quick looks.

Applications & Use Cases

Built for automated motorized target finding, this telescope combines an f/10 refractor with an ultra-stable platform to minimize rotational torque and alignment drift across a full session.

• Planetary observers doing extended high-magnification sessions
• Anyone who wants automated tracking over manual star-hopping
• Observers frustrated by drift on a manual mount at this focal length

Bresser Warranty & Support

The AR-90L/900 EXOS-2 GoTo carries a 2-Year Factory Warranty covering manufacturing defects, handled directly through Bresser’s support channel.