Mounting element

Abstract

The invention relates to a mounting element (1) for an optical device (15), in the form of a telescope or telescope tube. The mounting element (1) comprises a cast concrete body (3) in or on which at least one holding element (6, 7, 16) is provided for forming a rotational axis or swivel axis of the optical device (15).

Description

[0001] Mounting element

[0002] The invention relates to a mounting element for an optical device, in particular a telescope.

[0003] DE 1872884 U concerns a radiation protection bunker with an extendable periscope or an extendable video camera.

[0004] US Patent No. 1,651,412 A relates to a telescope mount that can be attached to any base, such as masonry or concrete. The mount itself is made of bronze, for example.

[0005] A mounting element is a component for accommodating an optical device, particularly a telescope, where the telescope, or more precisely the telescope tube, is pivotable in one or two bearings of the mounting element. In one design variant, the mounting element has a rotation axis at its lower end. The mounting element can be configured with one side part as a so-called gimbal, or with two side parts as a fork.

[0006] In particular, the mounting element can be used for the azimuth mount of an astronomical telescope, allowing the telescope to be pivoted in all directions around a vertical axis and a horizontal tilt axis. The vertical axis is formed by the lower rotation axis on the mounting element. The rotation axis lies between the mounting element and a base, and the mounting element is rotatable around the vertical axis. The horizontal tilt axis is formed by supporting the telescope in the two bearing eyes of the mounting element.

[0007] But an equatorial mount is also possible if the azimuthal mount described above is on an equatorial platform.

[0008] In another embodiment, the mounting element itself is designed to be stationary, with at least one optical device rotatably mounted at the upper end of a support. A drive unit is located between the support and the device, which can pivot or rotate the optical device about a first axis relative to the support.

[0009] Common mounting elements for large telescopes are made of metal, such as steel, to support the telescope's heavy weight. These mounting elements are often designed as hollow metal bodies. A disadvantage is that such mounting elements are susceptible to vibrations. Control problems arise, especially when using torque motors to drive the pan and / or rotation axes.

[0010] The object underlying the invention is to provide an improved mounting element for optical devices, in particular telescopes.

[0011] To solve the problem, a mounting element according to claim 1 and a manufacturing method according to claim 13 are proposed.

[0012] An optical device is pivotably or rotatably mounted on the mounting element, which comprises a cast concrete body. A support element is provided in or on the concrete body, which can serve as a bearing element for an axis of the optical device and / or as a motor mount for the mechanical attachment of a drive for the pivoting or rotating movement.

[0013] A bearing element is understood to be an element on or in particular in which an axis of the optical device is rotatably mounted. A motor mount is understood to be an element to which a drive unit can be mechanically attached or is already attached, with the optical device being rotatably mounted on the drive unit. A preferred drive unit is a direct drive, in particular a ring-shaped torque motor.

[0014] The optical device is a telescope or a telescope tube.

[0015] In a first embodiment, an additional support element is provided in or on the concrete body, specifically for a rotational axis of the mounting element relative to a base. The additional support element can, in turn, be a bearing element and / or a motor mount.

[0016] In a second embodiment, a mounting element for an optical device is proposed. This mounting element comprises a central support that protrudes upward from a base. The mounting element comprises a cast concrete body that forms at least the central support. A support element for a rotational axis of the optical device is provided at the upper end of the support. The support element can be a bearing element and / or a motor mount.

[0017] The support element preferably has a receptacle for the optical device, which receptacle is rotatable about the rotation axis, and wherein the optical device is pivotally mounted in the receptacle. The receptacle thus has the pivot axis for the optical device. The receptacle can have a shaft which is rotatably mounted in the support element in the form of a bearing element. The support element is preferably in the form of a motor mount, to which a direct drive can be mounted, which is thus located between the support and the receptacle. In this variant, the optical device preferably comprises two telescope tubes, wherein the central support is located between the two telescope tubes.

[0018] The terms "swivel axis" and "rotation axis" are chosen to distinguish between the two axes. The swivel axis and / or the rotation axis can perform either a swivel movement within a limited angular range of less than 360° or a rotation movement within an angular range of greater than 360°.

[0019] The advantages of this invention include the fact that stress relieving is unnecessary as with a steel structure, that the steel parts encased in concrete are protected from corrosion, that the encased parts cannot shift and are fixed in their position relative to one another by the concrete, and that concrete has better damping properties than a metal structure. A further advantage is that concrete has a higher heat capacity than metal (approximately a factor of 2). This improves observation conditions because there is less atmospheric turbulence when the structure heats up or cools down when the optical telescope is in use. This has a positive effect when used in daylight and sunlight. Condensation on the mount is also reduced. Many telescopes are located near the sea, where salt causes increased corrosion of metals, so a mounting element made of concrete is advantageous here too.Another advantage is that the thermal expansion of concrete is close to that of steel, so that no angular errors occur when heated.

[0020] In one embodiment, a mounting element for an optical device is proposed, which mounting element comprises a central part and a side part or two side parts, which two side parts are spaced apart from one another, wherein the one side part or each of the two side parts protrudes from the central part, wherein the mounting element comprises a cast concrete body which forms the central part and the one side part or the two side parts, wherein on one side part or each of the two side parts there is a holding element for forming the pivot axis of the optical device and in or on the central part there is a holding element for forming the axis of rotation of the mounting element.

[0021] The concrete body is preferably made of cast concrete. One variant of the cast concrete is polymer concrete.

[0022] The concrete used is preferably ultra-high-performance concrete (UHPC), also known as ultra-high-strength concrete (UHPC). This type of concrete is characterized by particularly high density and strength.

[0023] The concrete preferably has a compressive strength of over 80 N / mm 2 The concrete preferably has a w / c ratio of less than 0.25.

[0024] In one embodiment, a support element is cast into the concrete body, to which a bearing element or drive unit is subsequently attached. The bearing element can be an integral part of a motor, with a component, in particular a housing part, of the motor being attached to the support element.

[0025] In a less preferred embodiment, a component of a motor, in particular a housing part of the motor, is cast into the concrete body. For this purpose, the housing part can be provided with anchoring elements beforehand. In this variant, too, the bearing element is an integral part of the motor. The motor housing part cast into the concrete body serves as the mounting element in this case.

[0026] It is preferred that at least one of the one, two or three support elements comprises at least one anchor element which projects from the support element into the concrete body.

[0027] It is preferred that at least one of the one, two, or three support elements comprises at least one hollow anchor element. It is preferred that at least one of the one, two, or three support elements comprises a circle with threaded holes. However, a support element can also be a single threaded sleeve with an internal thread.

[0028] It is preferred that at least one of the two or three holding elements in the first embodiment is open on both sides, i.e. is present as a bearing eye or holding eye.

[0029] It is preferred that the axis of one support element in the second embodiment is in axial extension of the longitudinal direction of the central support.

[0030] It is preferred that the one, two or three support elements are made of metal, in particular steel.

[0031] It is preferred that at least one hollow body is enclosed in the concrete body.

[0032] A preferred method for producing a mounting element for an optical device is also proposed, which mounting element comprises a central support or at least one side part, the method comprising the following steps: a holding element for forming a rotation or pivot axis of the optical device is placed in a casting mold, then the casting mold is filled with cast concrete, which hardens in the casting mold, so that the holding element is enclosed in the resulting concrete body and its position is fixed in the central support or the side part.

[0033] A method is also proposed for producing the first embodiment of a mounting element for an optical device, which mounting element comprises a central part and a side part or two side parts, which two side parts are spaced apart from one another, wherein the one side part or each of the two side parts protrudes from the central part, wherein the method comprises the following steps: at least one holding element for forming the pivot axis of the optical device and a holding element for the rotation axis of the mounting element are placed in a casting mold, then the casting mold is filled with cast concrete, which hardens in the casting mold, so that the at least two holding elements are enclosed in the resulting concrete body and fixed in their position relative to one another.

[0034] A method for producing the second embodiment of a mounting element for an optical device is also proposed, which mounting element comprises a central support, the method comprising the following steps: a holding element for forming an axis of rotation of the optical device is placed in a casting mold, then the casting mold is filled with cast concrete, which hardens in the casting mold, so that the holding element is enclosed in the resulting concrete body and its position is fixed in the support.

[0035] It is preferred that, following the described methods, a machining remachining is carried out on at least one bearing surface or a fit of at least one of the holding elements.

[0036] It is preferred that the at least one support element is a metal part, wherein post-processing is carried out on at least one support element, preferably on at least two support elements, on a machine tool in which the cast concrete body is placed, wherein the post-processing results in a precise alignment of an axis of the support element or of a motor attached to the support element. It is preferred that at least two support elements are machined by the machine tool so that their axes and / or the axes of a motor attached to the respective support element are precisely aligned with one another.

[0037] The described methods are preferred variants, since the casting of the support elements results in a stable and non-adjustable alignment of the support elements in the concrete body. Less preferably, individual or multiple support elements can be attached, in particular screwed, to or within the concrete body after it has been produced.

[0038] It is preferred that, following the attachment of the holding element(s), a machining operation is carried out on at least one bearing surface or a fit of at least one of the holding elements.

[0039] The durability of the concrete is preferably improved by applying a concrete paint.

[0040] The invention is illustrated by drawings:

[0041] Fig. 1: Shows an example of the first embodiment of a mounting element in the form of a bearing fork.

[0042] Fig. 2: shows the three mounting elements of the bearing fork.

[0043] Fig. 3: Shows a variant of a support element of the pivot axis of the optical device.

[0044] Fig. 4: Shows a variant of the support element of the rotation axis of the mounting element.

[0045] Fig. 5: Shows a variant of a support element of the pivot axis of the optical device.

[0046] Fig. 6: Shows a variant of a bearing fork with hollow bodies.

[0047] Fig. 7: Schematically illustrates a two-armed mounting element of the first embodiment with a mounted optical device. Fig. 8: Schematically illustrates a single-armed mounting element of the first embodiment with a mounted optical device.

[0048] Fig. 9: Schematically illustrates an example of the second embodiment of a mounting element with a central support.

[0049] Fig. 10: Schematically illustrates another example of the second embodiment of a mounting element with a central support.

[0050] Fig. 11: Schematically illustrates another example of the second embodiment of a mounting element with a central support.

[0051] Fig. 12: Shows schematically the structure of a mounting element according to the state of the art.

[0052] Fig. 1 shows a preferred version of the first embodiment of a mounting element 1 in the form of a bearing fork. The mounting element 1 in the form of a bearing fork comprises a concrete body 3, which comprises a central part 4 and two side parts 5 projecting from it at a distance from one another.

[0053] Fig. 8 schematically illustrates a mounting element 1 with only one side part 5. The arrangement of the side part 5 with respect to the central part 4 can be carried out by a person skilled in the art in a suitable manner or can be adopted from existing steel mounts.

[0054] In the form of a single-arm mounting element 1, or a mounting element 1 in the form of a gimbal, this comprises a concrete body 3, which includes a central part 4 and only one side part 5 extending from it. Alternatively, the central part 4 could be referred to as the base part and the side part 5 as the arm.

[0055] The central part 4 and one or both side parts 5 are preferably connected in one piece or monolithically by being cast together in a mold using cast concrete. The support fork comprises a support element 6 in the central part 4 and a support element 7 in each of the two side parts 5. The single-arm mounting element 1 comprises a support element 6 in the central part 4 and a support element 7 in the side part 5.

[0056] Preferably, the support elements 6, 7 are inserted into the casting mold during the production of the concrete body 3. Less preferably, the support elements 6, 7 could be attached to the concrete body 3 after its production.

[0057] The support elements 6, 7 are preferably in the form of connection eyes or bearing eyes. The connection eyes or bearing eyes can preferably be open on both sides, as shown. Less preferably, one or more of the support elements 6, 7 could be in the form of connection pins, bearing pins, or connection plates. In this case, a body of the bearing pin or connection pin could be enclosed in the concrete body 3, and a stub shaft could protrude from the concrete body 3. The stub shaft can be hollow. In the case of a connection pin, the inner part of an annular torque motor can be attached to it. In the case of a connection eye, the outer part of an annular torque motor can be attached to it.

[0058] Two mounting elements 7 of the bearing fork form a pivot axis for an optical device 15 shown in Fig. 7, which is present in the space between the two side parts 5. As illustrated, a drive unit 17 is preferably located in or on a first mounting element 7 and a counter bearing 18 is located in or on the second mounting element 7. The axes of the mounting elements 7 are preferably aligned transversely, in particular at right angles to the longitudinal direction of the side parts 5. The first mounting element 7 preferably serves as a motor mount and specifies the orientation of the axis of a drive, in particular a torque motor, fastened to the mounting element 7. The second mounting element 7 preferably serves as a bearing element in which a shaft of the optical device 15 is mounted.

[0059] The support element 7 of the single-armed mounting element 1 defines the orientation of a pivot axis for an optical device 15 shown in Fig. 8, which is located next to the side part 5, or less preferably for two optical devices located on either side of the side part 5. As illustrated, a drive unit 17 is located in or on the support element 7. The axis of the support element 7 is preferably oriented transversely, in particular at right angles, to the longitudinal direction of the side part 5.

[0060] The optical device, or a support structure present on the optical device 15, is preferably mounted in one mounting element 7 by means of the drive unit 17, in that a first part (rotor or stator) of the drive unit 17 is rigidly connected to the mounting element 7 and a second part (stator or rotor) of the drive unit 17, which is rotatable relative to the first part, is connected to the optical device 15 or its support structure. In the embodiment as a bearing fork, the optical device 15 or its support structure is also mounted in the second mounting element 7, which is designed as a bearing element, in particular a bearing eye.

[0061] A motor is preferably located in the mounting element 7 of the single-armed mounting element 1 or the bearing fork, which is designed as a motor mount. The stator or rotor of the motor is connected to the side part 5, and the other of the two mentioned motor elements is connected to the optical device 15 or its support structure. The motor is preferably a direct drive, in particular a torque motor. The motor is preferably annular with a hollow drive shaft.

[0062] In the assembled device, a base 2 is located below the central part 4, as illustrated in Fig. 7 and 8. Between the base 2 and the central part 4 there is preferably a further motor, wherein the stator or rotor of the motor is connected to the central part 4 via the mounting element 6 designed as a motor mount, and the other of the two mentioned elements of the further motor is connected to the base 2. The further motor can be used to rotate the mounting element 1 about an axis of rotation perpendicular to the base 2. The further motor is preferably a direct drive, in particular a torque motor. The motor is preferably annular with a hollow drive shaft. The pivot axis of the optical device 15 runs at an angle of 90° to the axis of rotation.

[0063] As can be seen in Figs. 1 and 9, the holding elements 6, 7 or 16 can be enclosed in the circumferential direction by the concrete body 3. For better hold of the holding elements 6, 7, 16 in the concrete body 3, it is preferred if they have at least one radially extending projection or anchor element. In other words, the holding elements 6, 7, 16 are preferably predominantly enclosed in a form-fitting manner. It should be noted that this is not the case with the holding elements 7 illustrated in Figs. 2 and 3. In order to achieve a form-fitting enclosure, at least one projection or structure can be provided on the outer circumference of these holding elements 7, which protrudes outwards from the cylindrical shell into the concrete body 3.The support element 16 of the second embodiment and the support element 7 of the first embodiment, which is intended to accommodate the motor for the pivoting movement of the optical device, have mounting elements for the motor. In particular, the support element 7 or 16 can have a circle of threaded holes 9 in order to be able to screw a motor to the support element 7 or 16, as can be seen in Fig. 3. This support element 7 or 16 can preferably have regions with different inner diameters, wherein the threaded holes 9 are preferably located on an annular surface of a region with a larger diameter and run parallel to the pivot axis or rotation axis. The support element 7 shown in Fig. 3 is designed without a mounting option for a motor and is omitted in the single-arm variant.

[0064] The mounting element 6, which is intended to accommodate the additional motor for the rotary movement of the bearing fork or the single-armed mounting element around the base 2, has mounting elements for the additional motor. In particular, the mounting element 6 can have a circle of threaded holes 9 to enable a motor to be screwed to the mounting element 6, as can be seen in Fig. 4. The mounting element 6 can preferably have regions with different inner diameters, with the threaded holes 9 preferably located on an annular surface of a region with a larger diameter and running parallel to the pivot axis.

[0065] As can be clearly seen in Fig. 2, at least one anchor element 8 can be present on the holding element 6 of the first embodiment or 16 of the second embodiment. In a preferred embodiment, the anchor element 8 can be a hollow body and extend to the outside of the concrete body 3. The hollow body can also be open to the interior of the holding element 6, 16. This forms a shaft in the concrete body 3, for example for use as a cable shaft or as an optical shaft. Optionally, it is also possible to lay pipes or hoses in the concrete body 3, as is known from precast concrete elements in house construction. The concrete body 3 can have at least one shaft or an optical guide for an internal path of an optical beam, for example for a Coude beam path, in particular to redirect an additional beam path of the incident telescopic light to further instruments.Outwardly projecting anchor elements 8 can also serve to fix the respective support element 6, 7 in the required position in the mold. Hollow elements and the shafts formed by them can also be used to accommodate electronic components or form ventilation shafts.

[0066] The concrete body 3 may or may not have steel reinforcement in all design variants. The concrete body may contain fibers, in particular plastic fibers or, preferably, steel fibers, in all design variants.

[0067] Concrete body 3 can be cast from known concrete compositions. A high-strength grout, which is already known and proven for use in mechanical engineering, is preferred.

[0068] The support elements 6, 7, 16 are preferably made of metal, in particular steel. Anchor elements 8, 11 can be welded on.

[0069] Fig. 5 illustrates another embodiment of a support element 7, which is placed on a side part 5. In this embodiment, the support element 7 has anchor elements 11, which protrude into the side part 5 to achieve permanent anchoring in the concrete body 3. The support element 7 can have one, or as shown, two, radial projections 10. These can form an upper end of the side part 5. Of course, it is also possible in this embodiment to enclose the entire outer circumference of the support element 7 with the concrete body 3. Placing the support element 16 on the support 13 in the second embodiment is also possible, although less preferred, in which case the anchor elements can protrude in the axial direction from the support element 16 into the concrete body 3 of the support.

[0070] As schematically illustrated in Fig. 6, hollow bodies 12 can be present in the concrete body 3. This naturally also applies to the single-arm variant and the second embodiment variant shown in Figs. 9 to 11. These hollow bodies 12 are inserted into the casting mold in the form of hollow elements or hollow profiles or fixed in the intended position. The hollow elements can be enclosed on all sides by the concrete body 3 and fixed in the intended position in the casting mold, for example, by cords, wires, rods, or other aids. The hollow elements or hollow profiles can also extend to the wall of the casting mold.

[0071] The concrete body 3 is preferably made of solid concrete, i.e. preferably without air pores.

[0072] The casting mold can be designed for multiple use in order to produce several concrete bodies 3 consecutively in one casting mold. Alternatively, it is possible for the casting mold or parts of the casting mold to remain permanently connected to the concrete body 3, or for the casting mold or parts of the casting mold to be destroyed when the concrete body 3 is removed.

[0073] 9 to 11 show the second embodiment of the present invention, in which the mounting element 1 comprises a central support 13. The concrete body 3 forms at least the support 13. The integrally cast concrete body 3 preferably comprises the support 13 and a base from which the support 13 protrudes. The support 13 is rigidly connected to the base. After being aligned once at the site of use, the support 13 is preferably immobile with respect to the ground or is itself not pivotable with respect to the ground. Instead, one or two optical devices 15 are mounted or supported on the support 13 so as to be rotatable about the latter. The one or two optical devices 15 are located on a receptacle 14 which has a common pivot axis or two independent pivot axes for the optical devices 15.The receptacle 14 is located on the support element 16 of the support 13 and is pivotable, in particular rotatable, about the support 13. A drive, in particular a torque motor, is located between the support element 16 and the receptacle 14. The support element 16 can be designed according to one of the support elements 6 or 7. In particular, this can be designed according to one of the variants shown in Figs. 3 and 4. Anchor elements 8 of the support element 16 can also extend into the support in the axial direction of the support element 16. A hollow anchor element 8 can in turn form a shaft or channel, which can run in the longitudinal direction of the support or transversely to it. The support element 16 can be in the form of a support eye open on both sides, so that the concrete body 3 is exposed on the underside of the support element 16, or the support element 16 can be closed on the underside.Preferably, at least one shaft leads through the concrete body 3 to the support element 16.

[0074] The support 13 is preferably aligned obliquely to the substrate or the base. For this purpose, either the base can comprise an inclined surface from which the support 13 protrudes, or the support 13 can protrude obliquely from a straight surface of the base. The support 13 can have a straight line or at least comprise a kink or curve. As can be seen in Fig. 10, the support 13 can have two sections at right angles to one another. The holding element 16 is located at the upper end of the support, wherein the axis of the holding element 16, which specifies the orientation of the axis of the motor, is preferably a straight extension of the longitudinal direction of the uppermost section of the support. In one embodiment, an optical beam path can be present inside the support 13 and optionally the base.

[0075] A preferred method for producing the mounting element 1 according to the first embodiment comprises the following steps:

[0076] - Placing the support element 6 and one support element 7 or two support elements 7 in a casting mold,

[0077] - Filling the casting mold with cast concrete, with subsequent hardening of the concrete, so that the support elements 6, 7 are enclosed in the resulting concrete body 3 and fixed in their position relative to one another.

[0078] Preferably, in a further step, the mounting elements 6, 7 are reworked to precisely align their position and axes. The axes are formed by fitting motor mounts and / or bearing surfaces of bearing elements. A preferred method for manufacturing the mounting element 1 according to the second embodiment comprises the following steps:

[0079] - Placing the support element 16 in a casting mold,

[0080] - Filling the casting mold with a cast concrete, with subsequent hardening of the concrete, so that the support element 16 is enclosed in the resulting concrete body 3 and its position is fixed in the concrete body 3.

[0081] Preferably, in a further step, the mounting element 16 is reworked to precisely align its axis with the orientation of the support. The axis is preferably formed by a fit of the mounting element 16, which is designed as a motor mount.

[0082] Post-processing involves machining the inside of the mounting elements 6, 7, and 16 on their mating surfaces or bearing surfaces. The bolt circles with the threaded holes 9 can also be produced during post-processing.

[0083] Preferably, the mounting element 1 is clamped in a device for post-processing, wherein the processing steps on the support elements 6, 7 or 16 are carried out by a single machine tool.

[0084] The surface of the concrete body 3 can optionally be sealed with known sealing agents.

[0085] The two or three support elements 6, 7 of the first embodiment are preferably present as individual elements that are placed individually in the casting mold. In one embodiment, the two or three support elements 6, 7 can be connected to one another with an auxiliary structure before being introduced into the casting mold, wherein the auxiliary structure determines the position of the support elements 6, 7 relative to one another. The auxiliary structure can be enclosed in the concrete body 3, wherein the statically supporting function is preferably fulfilled by the concrete body 3. In other words, the auxiliary structure may not be suitable for supporting the weight of the optical device 15. The auxiliary structure can be completely within the concrete body 3 or at least partially on its outer side.

[0086] Finally, it should be mentioned that the illustrated arrangement of the two or three parts of the concrete body 3, their dimensions, and their shape, are to be understood as examples. It is important that, in the first embodiment, at least two mounting elements 6, 7 are arranged on or in the concrete body 3 to form axes, one of the axes serving to pivot the optical device 15 relative to the concrete body 3, and the second axis serving to pivot or rotate the concrete body 3 relative to a subsurface, a building, or a base 2 on which the concrete body 3 is located. The concrete body 3 can also be located on an equatorial platform.

[0087] Finally, Fig. 12 schematically illustrates a bearing fork with base 2 according to the prior art. The bearing fork is a metal or steel construction consisting of several parts, which may have a closed housing made of sheet metal elements. The bearing fork in question, comprising the concrete body 3, can replace the existing metal or steel bearing fork of existing or known telescopes.

[0088] The advantage of the mounting element in question is that it can be manufactured as a series product for the production of optical devices 15, in particular telescopes, and is already finished in the factory.

[0089] Another advantage is that machining is largely eliminated. Machining metal or steel bearings often generates 50-80% waste.

Claims

Patent claims 1. Mounting element (1) for an optical device (15), in the form of a telescope or telescope tube, characterized in that the mounting element (1) comprises a cast concrete body (3) in or on which at least one holding element (6, 7, 16) is present for forming an axis of rotation or pivot axis of the optical device (15).

2. Mounting element (1) according to claim 1, characterized in that the mounting element (6, 7, 16) is present as a motor mount, on which motor mount the rotor or stator of a direct drive can be mounted.

3. Mounting element (1) according to claim 1 or 2, characterized in that the mounting element (1) comprises a central part (4) and a side part (5) or two side parts (5), which two side parts (5) are spaced apart from one another, wherein the one side part (5) or each of the two side parts (5) protrudes from the central part (4), wherein the cast concrete body (3) forms the central part (4) and the one side part (5) or the two side parts (5), wherein in or on the one side part (5) or each of the two side parts (5) there is a holding element (7) for the pivot axis of the optical device (15) and in or on the central part (4) there is a holding element (6) for the rotation axis of the mounting element (1).

4. Mounting element (1) according to claim 1 or 2, characterized in that the mounting element (1) comprises a central support (13) which projects upwards from a base or a substrate, wherein the cast concrete body (3) comprises at least the support (13), wherein the holding element (16) for an axis of rotation of the optical device (15) is present at the upper end of the support (13).

5. Mounting element (1) according to one of claims 1 to 4, characterized in that the concrete body (3) consists of cast concrete.

6. Mounting element (1) according to one of claims 1 to 5, characterized in that at least one of the one, two or three holding elements (6, 7, 16) comprises at least one anchor element (8, 11) which projects from the holding element (6, 7, 16) into the concrete body (3).

7. Mounting element (1) according to one of claims 1 to 6, characterized in that at least one of the one, two or three holding elements (6, 7, 16) comprises at least one hollow anchor element (8, 11).

8. Mounting element (1) according to one of claims 1 to 7, characterized in that at least one of the one, two or three holding elements (6, 7, 16) comprises a circle with threaded holes (9).

9. Mounting element (1) according to one of claims 1 to 8, characterized in that at least one of the one, two or three holding elements (6, 7, 16) comprises a holding eye or bearing eye open on both sides.

10. Mounting element (1) according to one of claims 1 to 9, characterized in that the one, two or three holding elements (6, 7, 16) consist of metal, in particular steel.

11. Mounting element (1) according to one of claims 1 to 10, characterized in that at least one hollow body (12) is enclosed in the concrete body (3).

12. Mounting element (1) according to one of claims 1 to 11, characterized in that one or two of the one, two or three mounting elements (6, 7, 16) is present as a motor mount, on which motor mount the rotor or stator of a direct drive can be mounted.

13. Method for producing a mounting element (1) for an optical device (15), in particular a telescope, which mounting element (1) comprises a central support (13) or at least one side part (5), characterized in that at least one holding element (7, 16) is placed in a casting mold, then the casting mold is filled with cast concrete, which hardens in the casting mold, so that the at least one holding element (7, 16) is enclosed in the resulting concrete body (3) and fixed in its position.

14. The method according to claim 13, characterized in that the mounting element (1) comprises a central part (4) and a side part (5) or two side parts (5), the two side parts (5) being spaced apart from one another, the one side part (5) or the two side parts (5) projecting from the central part (4), a holding element (7) or two holding elements (7) for the pivot axis of the optical device (15) and a holding element (6) for the rotation axis of the mounting element (1) being placed in a casting mold, the casting mold then being filled with cast concrete which hardens in the casting mold so that the two or three holding elements (6, 7) are enclosed in the resulting concrete body (3) and fixed in their position relative to one another.

15. The method according to claim 13, characterized in that the mounting element (1) comprises a central support (13), wherein a holding element (16) for an axis of rotation of the optical device (15) is placed in a casting mold, after which the casting mold is filled with cast concrete which hardens in the casting mold, so that the holding element (16) is enclosed in the resulting concrete body (3) and its position is fixed in the support (13), wherein an axis of the holding element (16), which specifies the orientation of the axis of rotation, (16) is aligned in the longitudinal direction of the support (13).

16. Method according to one of claims 13 to 15, characterized in that subsequent machining is carried out on a fit or a bearing surface of at least one of the one, two or three holding elements (6, 7, 16).

17. Method according to one of claims 13 to 16, characterized in that at least one of the one, two or three support elements (6, 7, 16) comprises at least one anchor element (8, 11), so that the support element (6, 7, 16) is anchored in a form-fitting manner in the cast concrete.

18. Method according to one of claims 13 to 17, characterized in that a direct drive is mounted on at least one of the one, two or three support elements (6, 7, 16).

19. Method according to one of claims 13 to 18, characterized in that the at least one holding element (6, 7, 16) is a metal part, wherein a post-processing of at least one holding element (6, 7, 16) is carried out on a machine tool in which the cast concrete body (3) is placed, wherein a precise alignment of an axis of the holding element (6, 7, 16) and / or an axis of a motor fastened to the holding element (6, 7, 16) is obtained by the post-processing.

20. Method according to claim 19, characterized in that at least two support elements (6, 7) are machined by the machine tool so that their axes and / or the axes of motors fastened to the support elements (6, 7) are precisely aligned with one another.

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