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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/T-2(F)
Baader UFC Telescope Side Adapter - S70/T-2(F)

Baader UFC Telescope Side Adapter - S70/T-2(F)

by Baader Planetarium
SKU BAA-2459130
$44.00 - $44.00
$44.00
$44.00 - $44.00
$44.00
Price Match Policy!
  • Adapts Baader's Universal Filter Changer (UFC) to a telescope
  • Telescope-Side Connection: Female T-2 (M42x0.75) Thread
  • UFC-Side Connection: Male S70 Dovetail
  • Provides a secure, threaded attachment to the optical train
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • Baader UFC Telescope Side Adapter - S70/T-2(F)

    The Baader UFC Telescope Side Adapter S70/T-2(F) provides the critical link between a telescope's T-2 output and the Baader Universal Filter Changer (UFC) system. This component features a female T-2 thread for direct attachment to common focusers and accessories, and a male S70 dovetail to securely lock into the UFC base, enabling a rigid and reliable connection for your imaging train.

    S70 Dovetail for Secure UFC System Integration

    This adapter is equipped with Baader's standard S70 dovetail on the filter changer side. This male dovetail slides directly into the UFC base (main body) and is locked in place, ensuring a non-flexing, repeatable connection that maintains the precise alignment of your optical train every time you attach it.

    Female T-2 Thread for Common Telescope Connections

    The telescope side of the adapter features an internal female T-2 (M42x0.75) thread. This is one of the most common connection standards in astronomy, allowing you to attach the entire UFC assembly directly to a wide range of field flatteners, reducers, off-axis guiders, and telescope focusers that terminate in a male T-2 thread.

  • What is the primary function of the Baader UFC S70/T-2(F) adapter?

    Its sole purpose is to connect the Baader Universal Filter Changer (UFC) system to a telescope or accessory that has a male T-2 (M42x0.75) thread. It acts as the bridge between your telescope's optical train and the main body of the filter changer.

    Which side of the Baader UFC S70/T-2(F) adapter connects to the telescope?

    The side with the internal female T-2 thread connects to the telescope, focuser, or flattener. The side with the external S70 dovetail connects to the Baader UFC base.

    How would I use the Baader UFC S70/T-2(F) with a refractor and flattener?

    Most field flatteners for refractors, such as those for a Sky-Watcher Esprit or William Optics GT series, terminate in a male T-2 thread set at a specific backfocus distance. You would thread this adapter directly onto the flattener, then attach the UFC base to the adapter's S70 dovetail. You must then ensure the rest of your imaging train (OAG, camera) meets the flattener's required backfocus distance.

    Can I attach the Baader UFC S70/T-2(F) adapter directly to my ZWO ASI1600MM Pro?

    No, this is a telescope-side adapter. The ZWO ASI1600MM Pro camera itself has a female T-2 thread, just like this adapter. You need a camera-side UFC adapter to connect the filter changer to your camera. This specific adapter is designed to go on the other end of the UFC, facing the telescope.

    What is the S70 dovetail on the Baader UFC S70/T-2(F) adapter?

    The S70 dovetail is Baader's proprietary large-format connection standard for the UFC system. It provides a secure, wide-diameter connection that prevents tilt and flexure, which is critical for maintaining a flat field in astrophotography. This adapter converts the common T-2 thread to this more robust S70 standard.

    Does the Baader UFC S70/T-2(F) adapter add to my optical path length?

    Yes, every adapter adds some optical path length. While the exact thickness is not specified, you must account for it when calculating your backfocus. The entire UFC system (base, filter slider, telescope adapter, camera adapter) has a specific total length that needs to be factored into your imaging train to achieve sharp focus, especially when using a reducer or flattener.

  • Net weight (kg) 0.03
    Inner Diameter / Clear Aperture (mm) T-2 (42 mm)
    Outer Diameter 75
    Type of Adapter Expanding Adapter
    Optical length (mm) 1
    Outer Connection (eyepiece/-camera-sided) S70
    Inner Connection (lens sided) M42 x 0.75 (T-2)
  • Baader Planetarium Warranty