OAG Off Axis Guider Astronomy Accessory Astrophotography

The OAG Off Axis Guider is an astronomy accessory designed for astrophotography, enabling precise tracking during long-exposure imaging by guiding the telescope without interrupting the main imaging path. It fits standard 2-inch focuser systems and allows the use of a separate guide camera to monitor a guide star off-axis from the main imaging sensor.

Key Features

• Enables continuous astrophotography without interrupting the main imaging path
• Uses a separate guide camera to track a guide star off-axis from the main sensor
• Compatible with standard 2-inch focuser systems for easy integration
• Reduces mechanical stress on the telescope by avoiding separate guide scopes
• Improves tracking accuracy for long-exposure deep-sky imaging

Technical Features

• Designed for 2-inch focuser systems
• Uses off-axis guiding with a beam splitter to divert light to a guide camera
• Supports standard guide camera interfaces (e.g., USB, USB3)
• No moving parts in the optical path during imaging
• Compatible with most refractors, Newtonians, and Cassegrains using 2-inch focusers

Specifications

Applications

• Deep-sky astrophotography requiring precise tracking over hours
• Imaging setups using large-format CCD or CMOS sensors with narrow fields
• Mounts with limited space for separate guide scopes
• Users upgrading from guide scopes to a more compact, integrated solution