Photographic Use Example:

We've been asked a few times recently on how to set up the Baader UFC for use with a DSLR and a range of wide-field imaging refracting telescopes. So we thought we would write a short blog on some ways this can be done.

Let us start from the telescope side first.

All the enquiries we have had, the wide field refractors have 2" barrel focusers, so there is our starting point. The telescope side of the UFC Base (to which everything else in the UFC system is connected to) uses Baader's S70 dovetail adaptors to allow the UFC to fit to telescopes.

Looking at the UFC main diagram above Baader do a UFC Telescope-Adapter S70a to 2"/SCTi – Optical height: 1 mm (#2459128 , € 25,- ) that allows 2"/SC male-thread accessories to be used. More about our UFC Telescope Adapters can be found in our blog: The UFC telescope-side adaptors.

We offer our or our 2" Nosepiece to 2"/SCTa – with Safety-Kerf (#2408156 , € 43,- ) .

The image below shows the latter 2" nosepiece attached to the UFC S70 2"/SC adaptor. Using one of these will allow the UFC to be attached to a telescope with a 2" focuser.

Moving away from the telescope side, we next encounter the UFC Base itself to which the telescope side and camera side adaptors attach and the filter slider is inserted into. You can read more about the UFC Base in part 2 of our series of blogs The UFC Base.

For the filter slider either the 2" mounted, 2" unmounted or 50x50mm square versions can be used depending on what filters you currently have or may want to purchase. Using smaller filters (with one of the Aux holders) will likely cause vignetting depending on the size [age] of your camera's sensor). More information on the UFC sliders can be found in part 3 of our UFC blogs: The UFC Filter Slider

Next we get to the camera side of the UFC Base.

There are three possible "routes" for attaching a DSLR camera:

• UFC Camera-Adapter T-2a – Optical height: 2mm (#2459115 , € 29,- ) to allow the use of standard T-rings
• UFC Camera-Adapter M48a – Optical height: 2mm (#2459116 , € 29,- ) to allow use of wide (M48) T-rings for cameras with larger full-frame sized sensors.
• UFC Camera-Adapter S52a – Optical height: 2mm (#2459119 , € 30,- ) for use with S52 dovetail accessories such as Baader's Protective EOS T-Ring (which can also be used with T-2 and M48 camera adaptors - see below) or Baader's range of S52 wide T-rings

So lets put all of this together. In the image below we have an example setup based on what we have written above. From right to left: we have:

• A telescope with a 2" focuser
• 2" Nosepiece to 2"/SCTa – with Safety-Kerf (#2408156 , € 43,- )
• UFC Telescope-Adapter S70a to 2"/SCTi – Optical height: 1 mm (#2459128 , € 25,- ) - shown with 1 mm thick spacer ring to fasten 2" nosepieces that have a longer thread
• UFC Base (Filter Chamber) – Optical height: 13 mm (#2459110 , € 58,- ) with a UFC Filter Slider M48i (for mounted 2" filters) (#2459112 , € 45,- ) ready to be inserted
• UFC Camera-Adapter S52a – Optical height: 2mm (#2459119 , € 30,- ) - you can also use a UFC Camera-Adapter T-2a – Optical height: 2mm (#2459115 , € 29,- ) for standard T-rings or the UFC Camera-Adapter M48a – Optical height: 2mm (#2459116 , € 29,- ) to allow use of wide (M48) T-rings
• T-ring: in the example set up image below this is the Baader Canon EOS Protective T-ring (without any inserts) - (#2958550). You can use standard or wide T-rings providing you choose the appropriate UFC camera adaptor (see above).

In a future blog we will look at other ways the UFC can be used for imaging purposes, including how to set the UFC up for use with focal reducers/field flatteners.

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