Celestron 93648 Deluxe Off-Axis Guider
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The Celestron 93648 Deluxe Off-Axis Guider is a precision optical accessory designed to allow astrophotographers to guide their telescope and capture long-exposure images simultaneously through a single optical train, eliminating differential flexure issues common with separate guide scopes. It features a rotating body and a wide prism pick-off area that makes finding a suitable guide star significantly easier than with standard off-axis guiders. Overall, it is a well-built and thoughtfully designed tool that addresses one of the most persistent challenges in deep-sky astrophotography.
Key Features & Specs
| Design | Rotating body with large pick-off prism for a wider field of view when searching for guide stars |
|---|---|
| Compatibility | Works with most CCD and DSLR cameras using standard T-thread adapters; fits 2-inch focusers |
| Dimensions | Compact profile minimizes back-focus distance impact on optical train |
| Material | Durable black anodized aluminum construction for rigidity and light weight |
| Connections | Dual camera ports allowing simultaneous connection of imaging and guide cameras |
| Guider Port | Standard 1.25-inch guide camera port with locking thumbscrew for secure attachment |
| Flexure | Single optical train design virtually eliminates differential flexure for more accurate guiding |
Best for: Serious astrophotographers who shoot with longer focal length telescopes and need precise, flexure-free autoguiding without the bulk of a separate guide scope setup.