Connect and share knowledge within a single location that is structured and easy to search. However, I recently stumbled upon a site that claims of course is how the term is correctly used and not ofcourse. I'm not sure what novels you are referring to, but ofcourse is a typo. Wiktionary doesn't have an entry for it, and neither does Merriam-Webster or any dictionary I have checked.
A horse is a horse, of course, of course, And no one can talk to a horse, of course. That is, of course, unless the horse is the famous Mr. Furthermore, Google Fight says of course wins at 75 vs ofcourse which has only If you Google it, half of the results on the first page are in the url, and the first result is another forum where this was asked. Here are the Google Fight results: Google Fight — ofcourse vs. I just checked Merriam-Webster dictionary and it has ofcourse defined as a 'matter of course', i.
Sign up to join this community. The best answers are voted up and rise to the top. With the filter come instructions for use and care. Empire Theme by Pixel Union. Please read before you order anything. View cart. These are safe off axis solar telescope filters. An off axis solar filter blocks light into the telescope by only allowing light through a small portion of glass that is off center.
Got questions? Click for live chat. Off-Axis Guiders are probably one of the most ingenious inventions for astro-imaging. For exposure times of more than just a few seconds you need to correct the automatic motion of your mount for tracking errors. If possible this is done with a second telescope side by side to the main telescope e. A guide scope usually means a lot of extra weight for your mount to cope with.
This is problematic unless you own a mount with sufficient power reserves. Of course a second telescope and side-by-side mounting gear tend to be quite expensive, too! An Off Axis Guider is often the cheaper solution. The main advantage however is that the main camera and the guider use the same optical train. No matter how much a telescope might flex, or the mirror shift, both the main camera and guider will experience the same deviation.
In an embodiment, the cross section has a single rectangular shaped cut-out. In an embodiment, the cross section has a single square-shaped cut-out. In an embodiment, the cross section has a star shapes or astroid shaped cut-out. In an embodiment, the cross section has at least two or at least three rectangular shaped cut-outs. In an embodiment, the cross section has at least two or at least three square shaped cut-outs. In an embodiment, the cross section has a trapezoidal shaped cut-out.
In an embodiment, the cross section has a substantially elliptical shaped cut-out. In an embodiment, the cross section has a polygonal shaped cut-out. In an embodiment, said grooves or said structures are located only at one planar surface of the ring magnet, at transitions between adjacent poles. In an embodiment said grooves or said structures are located on both planar surfaces of the ring magnet, at transitions between adjacent poles. It is an advantage of providing such a groove on both surfaces of the ring magnet, because it reduces the risk that the ring magnet is incorrectly mounted flipped during assembly of the sensor system.
The groove on the opposite side of the ring magnet has no significant impact on the magnetic field measured by the sensor device. According to a second aspect, the present invention also provides a sensor system comprising: a magnetic field generator according to the first aspect; a sensor device arranged at a distance from said magnetic field generator, and adapted for measuring or determining said at least one magnetic quantity or said at least one derived quantity having reduced spatial inhomogeneities or spatial non-idealities.
The sensor system can for example be a linear position sensor system, or an angular position sensor system. Preferably the sensor device is an integrated chip IC containing a semiconductor device, e. In an embodiment, the sensor device comprises at least three magnetic sensor elements located in a plane parallel to a planar surface of magnetic field generator, the at least three magnetic sensor elements not being collinear.
In an embodiment, the sensor system is a position sensor system; and the sensor device is movably arranged at a distance from said multipole magnetic field generator; and said magnetic quantity or said derived quantity varies as a function of a position of the sensor device relative to the multipole magnetic field generator as a substantially sinusoidal signal having a ground frequency and higher harmonics; and the mechanical or magnetic periodic feature is adapted for reducing the higher harmonics.
More specifically, if the periodic function is described as a Fourier series with a main component and a plurality of higher order components also known as "higher harmonics". These harmonics cause inaccuracies of the position to be measured, which inaccuracies become more pronounced if the position of the sensor device relative to the magnetic generator deviates further from the envisioned position the sensor system was designed for.
It is an advantage that an optimal geometry of the periodic feature can be determined by computer simulations in particular using Finite Element Modelling. In an embodiment, the sensor device is adapted for measuring or determining one or more field gradients of said multipole magnetic field in a plane parallel to said multipole magnetic field generator.
In an embodiment, the sensor system is an angular position sensor system. In an embodiment, a plane of the sensor device is arranged at an axial distance from the magnet, and a centre of the sensor device is located at a radial offset from a longitudinal axis of said ring magnet; and the plurality of grooves or structures are shaped and dimensioned such that an angular position error is less than 0.
Particular and preferred aspects of the invention are set out in the accompanying independent and dependent claims. Features from the dependent claims may be combined with features of the independent claims and with features of other dependent claims as appropriate and not merely as explicitly set out in the claims. These and other aspects of the invention will be apparent from and elucidated with reference to the embodiment s described hereinafter. The drawings are only schematic and are non-limiting.
In the drawings, the size of some of the elements may be exaggerated and not drawn on scale for illustrative purposes. Any reference signs in the claims shall not be construed as limiting the scope.
In the different drawings, the same reference signs refer to the same or analogous elements. The present invention will be described with respect to particular embodiments and with reference to certain drawings but the invention is not limited thereto but only by the claims.
The drawings described are only schematic and are non-limiting. The dimensions and the relative dimensions do not correspond to actual reductions to practice of the invention.
Furthermore, the terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a sequence, either temporally, spatially, in ranking or in any other manner.
It is to be understood that the terms so used are interchangeable under appropriate circumstances and that the embodiments of the invention described herein are capable of operation in other sequences than described or illustrated herein. Moreover, the terms top, under and the like in the description and the claims are used for descriptive purposes and not necessarily for describing relative positions.
It is to be understood that the terms so used are interchangeable under appropriate circumstances and that the embodiments of the invention described herein are capable of operation in other orientations than described or illustrated herein.
It is to be noticed that the term "comprising", used in the claims, should not be interpreted as being restricted to the means listed thereafter; it does not exclude other elements or steps. It is thus to be interpreted as specifying the presence of the stated features, integers, steps or components as referred to, but does not preclude the presence or addition of one or more other features, integers, steps or components, or groups thereof.
Thus, the scope of the expression "a device comprising means A and B" should not be limited to devices consisting only of components A and B. It means that with respect to the present invention, the only relevant components of the device are A and B. Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention.
Thus, appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment, but may. Furthermore, the particular features, structures or characteristics may be combined in any suitable manner, as would be apparent to one of ordinary skill in the art from this disclosure, in one or more embodiments.
Similarly, it should be appreciated that in the description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects.
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