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Using Smaller-Sized Filters with Baader’s Universal Filter Changer (UFC) (Part 8)
It may appear, at first glance, that the Baader Planetarium Universal Filter Changer (UFC) is for use with larger 2″/50mm sized filters. Not so! You can use popular, and more often used smaller 1.25″, 31mm unmounted or 36mm unmounted filters too. So how can the filter slider drawer made for use with larger sized filters be used with smaller filters? Simple – with a step-down adaptor. Baader call these step-down adaptors AUX Filter Holders. Apart from the UFC Base, and the associated telescope- and camera-side adaptors for your telescope/camera combination, you will need Baader UFC D 50.4 Filter Slider (#2459113, € 40,-) . It is to this particular filter slider that any of the AUX step-down adaptors attach to. We offer three AUX step-down filter holder adaptors for use with the D50.4mm slider: Baader UFC 1¼" AUX-Filter-Holder (requires #2459113) (#2459153, € 9,50) : This adaptor is (female) threaded to accept the standard 28.5mm filter cell threads. Baader UFC D 31 mm AUX-Filter-Holder (requires #2459113) (#2459151, € 9,50) : This adaptor comes with three Allen-key socket screws and washers to securely clamp a 31mm unmounted filter in the AUX filter adaptor holder. Baader UFC D 36 mm AUX-Filter-Holder (requires #2459113)...
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Baader Universal Filter Changer (UFC): Simple photographic use example (Part 7)
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 Baader UFC S70 / 2" SC-thread (f) Telescope-Adapter (optical height: 1 mm) (#2459128, € 23,-) 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 Baader 2" Nosepiece with 2" filter thread (#2408155, € 35,-) or our Baader 2" Safety Kerf nosepiece with 2" filter thread (#2408156, € 35,-) . The image below shows the latter 2" nosepiece attached to the UFC S70 2"/SC adaptor. Using one of these will allow...
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Baader Universal Filter Changer (UFC): Visual use example (Part 6)
Now that we have covered the main overview of the Baader UFC system in our previous blogs (parts 1-to-5), we thought it would be appropriate to give some examples of how the UFC system can be used. Firstly, this is not meant to be exhaustive as there are many combinations of telescopes and accessories. In this blog, we will consider an example of the UFC being used visually. One of the simplest ways of using the UFC visually is with 1.25"/2" eyepieces and with a suitable telescope that uses a 1.25"/2" focuser (or 2" focuser with 1.25" adaptor). If we go back to our first blog (Overview of the UFC system), we said that although the UFC system looks complicated, its actually quite simple. At the most basic level, all that is required is a telescope side adaptor, the UFC Base and a camera/eyepiece adaptor. The image below is a simplified diagram showing the UFC system: camera/eyepiece side adaptors on the left; telescope side adaptors on the right, and in the middle is the UFC Base to which the telescope and camera side adaptors are connected. The three main versions of filter slider are also shown below the UFC Base. ...
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Baader Universal Filter Changer (UFC): The UFC telescope-side adaptors (Part 5)
This blog continues our series on the Baader Universal Filter Changer (UFC) system, with this one giving an overview of the telescope-side adaptors. Attaching a UFC system to a telescope may be done for example, by using a 1.25" or 2" push-fit nosepiece to go into a focuser drawtube for visual or imaging purposes, or to a focal reducer or field flattener for imaging use. The image below shows the current range of adaptors, as well as the spacers (extensions), that are available that allow you to attach the UFC Filter Base (shown below left in the pink box) to a telescope. There are ten telescope adaptors and four telescope-side UFC extension tubes. Except for the two RASA adaptors, all the other eight telescope adaptor "bodies" are fully anodised matt-black. The two RASA adaptors have their inner central portion anodised black (where the light emanates from the RASA front lens group assembly) to stop any reflections. Looking only at the telescope side adaptors in the green box - see below - the following information given is: Type of fitment that the telescope-side adaptor allows (e.g. T-2, M48 etc). Baader product code. The thickness of the adaptor contributes towards the...
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Baader Universal Filter Changer (UFC): The UFC camera-side adaptors (Part 4)
In this latest blog on the Baader UFC System, we will look at the UFC camera-side adaptors. At present there are nine (9) different adaptors that will allow cameras to be attached to the (camera-side) of the UFC Base unit. These are shown in the image below. The image shows the type of fitment to the camera (e.g. T-2, FLI etc), the product code and also the optical path length (thickness) of the adaptor (which is important when using the UFC system with e.g. focal reducer where the camera sensor needs to be positioned at a particular distance from the reducer - we will cover this in a later post). All of the nine adaptors have the following common features: made of aluminium anodised matt-black have countersunk holes are attached to the UFC-base unit using 8 hex screws supplied with the adaptor for secure fitment (screws are flush fitting when fully tightened) The image below shows the camera side of the UFC Base on which all the UFC camera-side adaptors are fitted. Below is an image of a UFC camera adaptor showing the 8 countersunk holes in which the hex screws are inserted for securely attaching the...
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Baader Universal Filter Changer (UFC): The UFC Filter Slider (Part 3)
In this, our 3rd part of the Baader Universal Filter Changer (UFC) system, we will look a little more closely at the UFC filter sliders. Below is an updated simplified diagram of the Baader UFC system. A general introduction you can find here, and the second part about the UFC Base here. The image below shows the three UFC filter slider models available. More about these are individually discussed later. All the UFC filter sliders feature: a knurled (removable) aluminium handle for holding the slider. This allows the slider to be easily held, inserted and removed from the UFC base. a 4mm long x 3mm diameter brass pin : The brass pin allows the slider to be seated correctly in the UFC Base. Once the filter slider is fully inserted, the brass pin "sticks out" of the locating hole in the UFC Base. The brass pin also serves another main purpose. Rather than pulling on the filter slider handle to remove it, which may potentially disturb the position of your telescope, you gently push on the brass pin to "eject" the slider away from the UFC Base magnet. You then simply, and easily, pull the slider out with the aluminium handle...
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Baader Universal Filter Changer (UFC): The UFC Base (Part 2)
In the first part of this series of blogs about the Baader Universal Filter Changer (UFC), we gave a general introductory overview of the UFC system. In this second part, we will look more closely at the main component of the system - the UFC Base - and outline its features. In the UFC overview diagram below, the UFC Base is the component in the middle (between the two red arrows). The UFC Base is also known as, and sometimes referred to, as the UFC filter chamber. For the purposes of this and future blogs in this series, we will refer to the UFC Base as just the "Base". The Base has a number of functions or purposes. It allows: The range of Baader UFC telescope-side adaptors and spacers to be attached allowing the UFC to be connected to a telescope. The Baader camera-side adaptors to be attached so that cameras can be connected to the filter system. The filter slider, which holds your filters, to be easily inserted and removed, and also to be held securely when in place (thus allowing the filter to be used for its imaging or visual purpose). In the box **Please note: the photographs of the Baader UFC Base...
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Baader-UFC (Universal Filter Changer) – the ever-growing filter chamber (Part 1)
The Baader Universal Filter Changer (or UFC for short) is a very versatile simple system for using, mounting and changing (or swapping) filters in and out of a light path. The UFC can be used for imaging where you may want to swap different filters (e.g. LRGB) between a camera and a telescope but do not want the bulk, or expense, of a filter wheel. The UFC can be used between a camera and a Celestron RASA 11/14(36) or a Starizona Hyperstar system where the overall size and shape of a filterwheel causes issues. You can also use the UFC for visual purposes where you can easily switch between different colour filters between a telescope and an eyepiece. The image below shows the standard "exploded" diagram of the parts that make up the Baader UFC. We've colour-coded it to highlight the main different parts (see below). At present there are 30+ parts to the whole UFC system in total. The large number of components may seem somewhat overwhelming at first glance, and can lead to some confusion, and that the system is complicated. However, we hope this series of blogs will help show how simple, and effective, the UFC is....
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Baader's RASA 8" UFC telescope-side adaptor (Part 9)
It may only be an adaptor but this little piece of anodised metal will let you use a range of popular astroimaging cameras with Baader Universal Filter Changer (UFC) on Celestron's RASA 8 telescope thus allowing you to swap filters quickly and easily. Unlike the Baader UFC telescope adaptors for the 11″ RASA and RASA 36 that are mated to the corrector lens group cell face-plate and secured with the knurled retaining ring, this adaptor screws onto the male outer threads of the lens group housing itself. So you would remove the RASA 8’s retaining, the T-2 or C camera adaptor and then the clear filter, and then attach the UFC Base with its RASA 8 UFC adaptor in place. The adaptor has female M84 threads on the telescope side and uses Baader’s S70 dovetail on the UFC/camera side for secure fitment to both the RASA and the UFC Base. This S70 UFC adaptor itself only adds a minuscule 1.4mm to the optical path, but what is the overall optical length with the rest of UFC system in place? The UFC base is 13mm thick, and with the typical types of UFC camera adaptors (T-2/M48 etc) used being 2mm, the...
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Why choose UFC Quickchange-Frontfilters with DSLR-Cameras?
Info about using quickchange-frontfilters with the UFC in combination with DSLR-cameras There are no monochrome DSLR-cameras on the market, so a filter holder (e.g. the Baader-UFC) may seem quite useless for DSLR imaging, but if you take a closer look, there are indeed some interesting use-cases. Many owners of DSLR-cameras remove the complete UV/IR-blocking filter and use this simple way to improve the sensitivity especially for H-alpha – but because of the costs, they decide not to add a new blocking filter with increased H-alpha-transmission. But as a result, you have to find another way to block the IR- and UV-parts of the spectrum so that they will not decrease the image quality. You can use the UFC to mount such a UV/IR-cut filter in front of the camera - and to quickly replace it with another filter, without touching the camera. Narrowband filters are not perfectly suited for a DSLR because of the Bayer-matrix, but especially a 35 nm H-alpha filter will show the emission nebulae better. Especially in light-polluted areas the UHC-S-filter is very helpful. You can use the Baader-UFC to switch between several filters fast and easy. This way you can see which filter is the best for...
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Free Download: 3D-printable UFC-Case for filter sliders
You are the owner of one or more UFC filter sliders and are looking for a way to safely store the filter sliders with mounted filter? Then we have the solution for you: our 3D-printable UFC-Case for filter sliders. This box with hinged lid holds all UFC filter sliders. We offer you the STL files (consisting of two parts) as free download, you only need to login with your customer account or register on our website. Below is the download link (which will only work when you're logged in). Please also note the information below about the Creative Commons License. The file is optimized for printers according to the FDM procedure. Ideal would be a heated pressure bed. Material with little warping or heated space. Preferably PLA. As a primer we recommend Bluetape. Other Case for UFC filter slider as 3D-printable .STL file * (Size: 644.2 KB) Downloads: 80 * You have to Login or Register to download this file The download file is licensed under the Creative Commons License CC BY-NC-SA 4.0. You may pass on the file under Attribution © Baader Planetarium GmbH as well as linking the license and indicating any changes. The file may not be...
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Testreport ATT 1/2018 Baader-UFC - the Swiss Army Knife of filter technology
The current issue of Astronomy Technology Today introduces the UFC System - the tester was impressed: What do you get if you cross an Erector Set with some giant metal washers, a plethora of variously-sized openings, a filter tray that slots in like a clip in a Glock, and, well, all sorts of other stuff? The Baader Universal Filter Changer, or UFC for short. And when Baader says “universal,” they mean it. Read the Testreport ATT 1/2018 Baader-UFC . Mark Zaslove shows all wonderful things you can do with the Baader UFC (Universal Filter Changer).
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Additional Information
| Manufacturer | Baader Planetarium |
|---|---|
| SKU (#) | 2459135 |
| Optical length (mm) | 3 |
| Inner Diameter / Clear Aperture (mm) | 65 mm |
| Outer Connection (eyepiece/-camera-sided) | Dovetail ring, S70 |
| Type of Adapter | Reducing piece |
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