Omegon Off-Axis Guider Advanced T2

The Omegon Off-Axis Guider Advanced T2 enables precise tracking during astrophotography without the need to mount a heavy tracking scope. At only 200 grams, it is extremely light, making it ideal for smaller telescopes or mounts where weight is an important consideration.

The principle is simple: a small prism directs some of the light to a guiding camera or reticle eyepiece, allowing you to choose a tracking star and control your telescope with precision. On the telescope side, the guider features a 2″ nosepiece, while the camera side has a T2 thread. With a matching T-ring, you can easily connect a DSLR, or an astro camera directly.

The off-axis guider is rotatable about 100°, making it easy to bring a suitable tracking star into view. The prism has a side length of 9 mm and is tiltable for a larger field of view. The connection for the guiding camera features a 7 mm slide focuser to compensate for differences in focus. This makes the system very flexible and user-friendly, both with autoguiders (e.g., Orion StarShoot or Lodestar) and with a reticle eyepiece.

Application

The Omegon Off-Axis Guider Advanced T2 is intended for deep-sky astrophotography with long exposure times, where point-like stars are crucial. It is suitable for SC telescopes and refractors with sufficient backfocus. With Newton telescopes, the required 3 cm backfocus can sometimes be a limitation, so check beforehand. Use the supplied extensions to precisely align the distance between astrocamera and guider and achieve perfect focusing.

Specifications

Capacity

• Telescope connection: 2″
• Camera side: T2 thread
• Guiding camera connection: T2 with 7 mm slide focuser
• Minimum build length: 30 mm

General

• Weight: 200 g
• Type: Adapter
• Design: Camera adapter
• Prism: 9 mm, tiltable
• Rotation range: approx. 100°