Abstract: A space telescope comprising a primary mirror, a secondary mirror, an image field corrector, a focal plane with at least one optical sensor and an evaluation unit for the data from the optical sensor, the focal plane being assigned at least one actuating unit, the at least one actuating unit being designed to displace the focal plane in the X- and Y-directions, the secondary mirror being assigned at least one further actuating unit, the at least one further actuating unit being designed to displace the secondary mirror in the Z-direction, the actuating unit further being designed to ensure a reproducible adjustment of at least 1 nm over at least one pixel length of the optical sensor, with the Z-direction being parallel to the optical axis of the space telescope, and to a method for calibrating a space telescope in space.

Abstract: In a method of expanding a flight envelope of an aircraft comprising a pair of wing halves and extendable leading-edge flaps at leading wing edges of the wing halves towards higher transonic flight Mach numbers, at least one of the leading-edge flaps at one of the two wing halves is extended in flight direction, when approaching the flight envelope with increasing flight Mach number of the aircraft.

Abstract: A heat accumulator device is provided having a metal phase-change material as an accumulator material, the heat accumulator device including at least one a holding chamber having a holding space for the accumulator material, a housing for the holding space, at least one heat input apparatus for inputting heat into the at least one holding chamber, and at least one heat output apparatus for outputting heat from the at least one holding chamber. A coupling region of the heat input apparatus, provided for thermal coupling to the accumulator material, and/or a coupling region of the heat output apparatus, provided for thermal coupling to the accumulator material, is arranged, at least in part, at a distance from the accumulator material.

Abstract: A receiving device for solar radiation with a container for heating a heating transfer medium in a solar thermal power plant includes a double-walled housing which extends in a longitudinal direction, the housing surrounding an interior and having an outer wall and an inner wall surrounded by the outer wall, between which a plurality of support elements and counter support elements is disposed, wherein support elements and/or counter support elements corresponding with each other extend away from the outer wall and/or the inner wall in a radial direction, support elements and counter support elements corresponding with each other in at least the longitudinal direction are seated against each other on one side, and support elements and counter support elements corresponding with each other in the peripheral direction along at least one peripheral line are seated against each other on one side.

Abstract: An operating method and a TDI line sensor having n TDI lines, at least one readout electronics unit and a circuit arrangement. The period of the CCD control signals is an integer multiple of a system period, with all TDI lines controlled with the same CCD control signal. The TDI line sensor is configured such that an optimum period of the CCD control signals is calculated on the basis of the relative velocity, wherein the optimum period is not an integer multiple of the system period, wherein the period of the CCD control signals is changed as an integer multiple of the system period during the integration over all n TDI lines so that the arithmetic mean of the period of the CCD control signals over the n integration steps corresponds to the optimum period.

Abstract: An autonomously operable battery module for a battery system of a satellite or spacecraft is provided with a carrier board on which a plurality of battery cells and operating components for temperature control of the battery cells for charge balancing between the battery cells and for monitoring the battery cells are arranged, wherein communication equipment is also present on the carrier board for communication with the battery system and further battery modules in the battery system, and connection equipment for electrical series and/or parallel coupling with one or more other similar battery modules are arranged on the carrier board.

Abstract: A method is provided for determining a state of a solar-thermal field with rows, arranged in parallel in a transverse direction of the field, of successively arranged parabolic trough collectors having a mirroring reflector surface, which each have, along their longitudinal extent, a focal point line in which at least one absorber pipe is arranged in each case.

Abstract: An optical device includes a tunable laser for repeatedly irradiating a sample with laser light as wavelength scans over a defined wavelength range, a trigger unit and a data acquisition unit. The laser outputs at least a first trigger signal and a second trigger signal. The first trigger signal outputs a temporal start and a temporal end of a wavelength scan, and the second trigger signal comprises a pattern of scanning pulses distributed over the tunable wavelength range at predefined wavelength intervals. The trigger unit has an adder which adds the trigger signals and a mixer which mixes the trigger signals with the reference signal to form the trigger output signal. A method for capturing infrared absorption spectra is also provided.

Abstract: A measuring device for determining a distribution of a heat transfer medium on an inner wall of a shaftless container which rotates when used to heat the heat transfer medium with concentrated solar radiation in a solar thermal power plant or as a rotary kiln includes a distance measuring device for determining a thickness of a film of the heat transfer medium on the inner wall of the container. The distance measuring device includes at least one optical device for detecting at least one height profile along at least one measurement line projected onto the inner wall and at least one position transducer for determining a current rotational position of the respective measurement line on the inner wall. A method for determining a distribution of a heat transfer medium on an inner wall of a shaftless container is also provided.

Abstract: A modular end effector with a base with at least one connection element, a manipulator, in particular interchangeable with the connection element connected is disclosed. The position of the connection element and/or the position of the manipulator within the connection element can be changed so that the manipulator can be used in different positions relative to a base to create a versatile modular end effector.

Abstract: An optical device and systems for near and distance imaging includes an optical unit with a first optical lens and a second optical lens, the first optical lens and second optical lens being arranged along an optical axis, and a transceiver unit with a transceiver element, a light passage surface of the transceiver element being arranged in or intersecting a plane or curved surface. A first distance between the surface and the first optical lens is provided along the optical axis and set in such a way that, during intended normal operation, the transceiver element of the transceiver unit is imaged onto a distant imaging surface by the optical unit.

Abstract: An optical device, a system and a method for dispersion interferometry includes a frequency doubling device and an optical modulation device, a transmission beam path which is configured to emit a first and second measurement beam on an optical element and a reception beam path which is configured to receive a first and second measuring beam returned by the optical element.

Abstract: The invention relates to a passive radiant cooler (1) having a substrate and a layer structure which is applied to the substrate (2) and comprises the at least one reflection layer (3) and at least one emission layer (4), the emission layer (4) comprising an at least partially crosslinked polymer and/or a ceramic material derived from this polymer which are produced in order to form the emission layer (4) from at least one crosslinkable, silicon-based prepolymer, the prepolymer being composed of at least one type of monomer unit according to formula (I).

Abstract: A system for optical communication includes at least one light source for transmitting optical signals, at least one optical receiving unit for receiving the optical signals of the at least one light source, at least one mask unit, which is arranged between the optical receiving unit and the at least one light source, and which is designed to be switchable back-and-forth at least in areas between an at least partially optically non-forwarding and at least partially optically forwarding state. An image of at least one light-emitting area of the at least one light source can be imaged onto the at least one mask unit and in the at least partially forwarding state of the at least one mask unit can be conducted to the receiving unit. A method for optical communication is also provided.

Abstract: The invention relates to an R-mode receiver arrangement (1) comprising a low-noise amplifier (2), a bandpass filter (3), and an RTL software-defined radio receiver module (4), wherein an input of the low-noise amplifier (2) is configured to be connectable to a receiving antenna (10, 11), wherein an output of the low-noise amplifier (2) is connected to the RTL software-defined radio receiver module (4) via the bandpass filter (3).

Abstract: The invention relates to a device for unfolding a rolled-up elongate hollow member having: at least one elongate hollow member which has two elongate shell member halves, and an unfolding mechanism which has a fixed base structure and a winding core which is rotatably supported on the base structure and on which the at least one elongate hollow member in a first state is rolled up and compressed and which by rotating moves and unfolds the elongate hollow member from the first state into an unrolled and unfolded second state so that an elongate hollow space is formed between the two shell member halves of the at least one elongate hollow member, wherein the at least one elongate hollow member has as a first end a hollow member root, via which the elongate hollow member is secured to the rotatably supported winding core, wherein the first shell member half of the at least one elongate hollow member is secured in the region of the hollow member root to the rotatably supported winding core, and the unfolding m

Abstract: A solar radiation receiver having a receiver chamber having at least one radiation opening through which concentrated solar radiation can be introduced into the receiver chamber, having at least one solar absorber device which has at least one solid medium block which is fastened to a transport device, and having at least one opening through which the at least one solar absorber device is inserted such that the at least one solid medium block is arranged in the receiver, and through which the solar absorber device is removed.

Abstract: The present invention relates to a material and process for producing water- and oxygen-free halogen salts of an alkali metal or alkaline earth metal, or of a transition metal, or of a metal of groups 13 or 14 of the Periodic Table, in which at least one halogen salt is heated with a heating rate of from 0.2 K/min to 30 K/min, especially from 1.0 K/min to 10 K/min, proceeding from room temperature.

Abstract: The invention relates to a brake device for producing a brake torque counter to a torque acting on a rotatably supported member, wherein the brake device has: at least one toothed brake ring which is mechanically actively connected to the rotatably supported or supportable member, a plurality of bending-resistant brake levers which each have at a first lever end at least one stop which engages in the tooth arrangement of the brake ring and which are each rotatably supported on a second lever end opposite the first lever end, wherein each brake lever is connected to a force element for applying a brake force in such a manner that, as a result of the brake force via the stop of the respective brake lever which is in engagement with the tooth arrangement of the brake ring, a brake torque is produced on the brake ring tangentially counter to the active direction of the torque in order to apply a brake torque to the rotatably supported or supportable member, wherein the brake levers are arranged with respect to