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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
Baader UFC Telescope Side Adapter - S70/C9.25 or C11 Hyperstar, SCT & HD
Baader UFC Telescope Side Adapter - S70/C9.25 or C11 Hyperstar, SCT & HD

Baader UFC Telescope Side Adapter - S70/C9.25 or C11 Hyperstar, SCT & HD

by Baader Planetarium
SKU BAA-2459132
$91.00 - $91.00
$91.00
$91.00 - $91.00
$91.00
Price Match Policy!
  • Connects Baader UFC System to C9.25 & C11 Telescopes
  • Designed for Hyperstar Imaging Systems
  • Compatible with Standard SCT & EdgeHD Models
  • Features a Rigid S70 Dovetail Interface
  • Enables Precise, Sub-Millimeter Backfocus Adjustment
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • Baader UFC Telescope Side Adapter - S70/C9.25 or C11 Hyperstar, SCT & HD

    The Baader UFC Telescope Side Adapter provides the critical, high-precision connection between the Baader UFC filter system and Celestron C9.25 or C11 telescopes. It is specifically designed to meet the exacting backfocus requirements of Hyperstar imaging, where spacing tolerance is measured in fractions of a millimeter. This adapter utilizes the robust S70 dovetail standard for a secure, flex-free fit to the UFC Base.

    The S70 Dovetail Connection for C9.25/C11 Telescopes

    This adapter serves as the primary mechanical link between your telescope and the entire Baader Universal Filter Changer (UFC) system. It threads directly onto the front cell of a Celestron 9.25" or 11" Schmidt-Cassegrain or EdgeHD optical tube, replacing the secondary mirror assembly for Hyperstar imaging. The telescope-facing side features the appropriate thread, while the camera-facing side presents Baader's large-format S70 dovetail receptor, ensuring a rigid, non-rotating connection to the UFC filter base.

    Achieving Critical Backfocus for Hyperstar Imaging

    A Hyperstar system's fast focal ratio makes it extremely sensitive to backfocus distance; even a tiny error can degrade image quality across the field. The UFC system is engineered to solve this problem by allowing you to build up the precise spacing required between the Hyperstar and your camera sensor. This telescope-side adapter is the foundational piece that makes that rigid, repeatable connection possible.

    When calculating your required spacing, you must account for the camera's flange distance and the focus shift introduced by any filters in the optical path. The remaining distance is then built using this adapter, the UFC base, and the appropriate UFC camera-side adapters and extension tubes. This modularity is essential for achieving the sub-millimeter precision that Hyperstar imaging demands.

  • What telescopes is the Baader UFC S70 adapter compatible with?

    This adapter is specifically designed for Celestron 9.25" and 11" telescopes, including standard Schmidt-Cassegrain (SCT) and EdgeHD models when using a Hyperstar imaging system.

    Why is precision so important when using this UFC adapter with a Hyperstar?

    Hyperstar systems operate at a very fast focal ratio (typically f/2), which creates a very narrow zone of sharp focus. Any deviation from the specified backfocus distance, even by less than a millimeter, can result in elongated stars and poor image quality, especially at the edges of the frame. This adapter is the first link in a rigid chain designed to maintain that critical spacing perfectly.

    How does this adapter connect to the rest of the Baader UFC system?

    This adapter features a female S70 dovetail receptor. It connects directly to the male S70 dovetail on the telescope side of the Baader UFC Base (Filter Chamber), forming a secure, non-flexing foundation for your imaging train.

    Can I use this Baader UFC adapter on my standard C11 SCT for deep-sky imaging without a Hyperstar?

    No. This adapter is designed to thread onto the front of the telescope in place of the secondary mirror, which is a requirement only for Hyperstar imaging. For imaging at the rear of a standard SCT, you would need a different set of UFC adapters that connect to the rear cell threads.

    Does this adapter work for both the Celestron C9.25 and C11 EdgeHD models?

    Yes, this adapter is compatible with the Hyperstar systems for both the C9.25 and C11 EdgeHD optical tubes, as well as the standard SCT versions of the same apertures.

    What is the S70 dovetail on this Baader UFC adapter?

    The S70 is a Baader Planetarium proprietary large-format dovetail system. It uses a wide, rigid dovetail clamp instead of simple threads to connect components. This design prevents flexure and rotation within the imaging train, which is critical for maintaining optical alignment, especially with heavier cameras and filter wheels.

  • Net weight (kg) 0.02
    Inner Diameter / Clear Aperture (mm) 64.3
    Outer Diameter 75
    Type of Adapter Expanding Adapter
    Optical length (mm) 4.1
    Outer Connection (eyepiece/-camera-sided) S70

    • Note

      No contents were provided for this product.

  • Baader Planetarium Warranty