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Baader UFC Telescope Side Adapter - S70/RASA 8"
Baader UFC Telescope Side Adapter - S70/RASA 8"

Baader UFC Telescope Side Adapter - S70/RASA 8"

by Baader Planetarium
SKU BAA-2459136
CA$124.00 - CA$124.00
CA$124.00
CA$124.00 - CA$124.00
CA$124.00
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  • Connects Baader UFC System to the Celestron RASA 8"
  • Provides a rigid, secure S70 telescope-side thread
  • Designed for cameras with minimal back-focus requirements
  • Enables use of multiple filter sizes via UFC filter sliders
  • Screws directly onto the RASA 8" optical tube threads
1 in stock
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • Baader UFC Telescope Side Adapter - S70/RASA 8"

    The Baader UFC Telescope Side Adapter for the RASA 8" provides the essential connection between your astrograph and the Baader Universal Filter Changer (UFC) system. This adapter mounts directly to the RASA 8" threads, establishing the S70 interface required to use UFC filter sliders and camera-side adapters for a fully customized imaging train.

    Seamless UFC Filter Integration for the RASA 8"

    This adapter is the core component for adding robust filter capability to the Celestron RASA 8". It allows you to place the Baader UFC base between the telescope and your camera, opening up the ability to use a wide variety of filters—from standard 1.25" and 2" mounted filters to large, unmounted square filters—without changing your setup.

    Engineered specifically for the RASA 8", this S70 adapter is optimized for imaging trains using modern astronomy cameras that have minimal back-focus. It creates the correct spacing to integrate the UFC system while accommodating cameras with standard T-2, M48, or M54 threads via the appropriate camera-side UFC adapters.

    Considerations for RASA 8" Collimation Access

    A known trade-off when working within the extremely limited back-focus of the RASA 8" is access to hardware. Due to the adapter's necessary position close to the optical tube, reaching the RASA's front hex screws for fine-tuning collimation or tilt can be more challenging.

    This is an inherent constraint of the optical design, not a flaw of the adapter. Observers should plan to make major collimation adjustments before fully assembling the imaging train, reserving minor tweaks for when the camera and filter changer are in place.

  • What is the primary purpose of the Baader S70/RASA 8" UFC Adapter?

    Its sole purpose is to physically connect the Baader Universal Filter Changer (UFC) system directly to the threads of a Celestron RASA 8" astrograph. This allows imagers to use interchangeable filters with the fast optical system.

    Which cameras are compatible with this Baader RASA 8" adapter?

    This adapter is designed for astronomy cameras with minimal back-focus. When combined with the appropriate camera-side UFC adapter, it supports cameras with standard female threads like T-2, M48, or M54.

    Does this adapter allow me to use standard 1.25" filters with my RASA 8"?

    Yes. When this adapter is used to install the Baader UFC system on your RASA 8", you can then use a UFC filter slider designed for 1.25" mounted filters. The UFC system also supports many other filter sizes via different sliders.

    How does the Baader UFC adapter affect collimation on my RASA 8" when imaging the Andromeda Galaxy (M31)?

    The adapter itself does not alter the telescope's collimation. However, its physical presence can make it more difficult to access the RASA 8" front adjustment screws. It is recommended to perform your primary collimation before attaching the full imaging train, leaving only minor adjustments for achieving perfect corner stars on large targets like M31.

    What other components do I need to use this Baader S70/RASA 8" adapter?

    This is only one part of the system. To create a complete filter solution for your RASA 8", you will also need:

    • The main Baader UFC Base
    • At least one UFC Filter Slider for your desired filter size
    • A camera-side UFC Adapter that matches your camera's threads (e.g., M54, M48, or T-2)
    • A UFC Extension if additional spacing is required

    Why is accessing the RASA 8" adjustment screws difficult with this adapter installed?

    This is a direct result of the extremely short back-focus of the RASA 8" optical design. Any accessory, including this adapter, must fit into a very tight physical space, which naturally obstructs access to adjustment screws located on the telescope body.

  • Net weight (kg) 0.03
    Inner Diameter / Clear Aperture (mm) 64 mm
    Type of Adapter Expanding Adapter
    Optical length (mm) 1.4
    Outer Connection (eyepiece/-camera-sided) S70
  • Baader Planetarium Warranty