SU662795A1 - Interferometer for checking the shape of astronomical mirrors - Google Patents
Interferometer for checking the shape of astronomical mirrorsInfo
- Publication number
- SU662795A1 SU662795A1 SU762316426A SU2316426A SU662795A1 SU 662795 A1 SU662795 A1 SU 662795A1 SU 762316426 A SU762316426 A SU 762316426A SU 2316426 A SU2316426 A SU 2316426A SU 662795 A1 SU662795 A1 SU 662795A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- shape
- mirrors
- interferometer
- checking
- astronomical
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
Landscapes
- Telescopes (AREA)
- Lenses (AREA)
Description
Изобретение относитс к области контрольно-измерительной техники, в частности к устройствам типа интерферометров, позвол ющим контролировать правильность формы поверхности астрономических зеркал, например зеркал крупных телескопов.The invention relates to the field of instrumentation technology, in particular to devices such as interferometers, which allow controlling the correctness of the surface shape of astronomical mirrors, for example, mirrors of large telescopes.
Зеркала крупных телескопов имеют, как правило, форму вогнутого параболоида, реже - гиперболоида или эллипсоида, причем диаметры зеркал иногда составл ют несколько метров. В частности, главное зеркало крупнейшего в мире телескопа нмееТ форму вогнутого параболоида диаметром шесть метров и массу несколько дес тков тонн. Контроль правильности формы таких зеркал надежнее всего проводить в услови х естественной разгрузки, т. е. при вертикальном расположении их оптической оси, так как в противиом случае происходит де-. формаци поверхности зеркал под действием их собственной массы.The mirrors of large telescopes have, as a rule, the shape of a concave paraboloid, more rarely, a hyperboloid or an ellipsoid, and the diameters of the mirrors sometimes are several meters. In particular, the main mirror of the world's largest telescope does not have the shape of a concave paraboloid with a diameter of six meters and a mass of several tens of tons. Control of the correctness of the shape of such mirrors is most reliably carried out under conditions of natural unloading, i.e., with a vertical arrangement of their optical axis, since in the opposite case de- occurs. the formation of mirror surfaces by their own mass.
Известны устройства - сферометры, предназначенные, в частности, и дл контрол формы астрономических зеркал, содержащие опорные элементы и перемещающийс щуп, с помощью которого измер ют стрелку прогиба контролируемого зеркала (1 . Недостатком известного устройства вл етс низка точность, обусловленна деформаци ми контролируемого зеркала и самого устройства, а также низка производитель ность.Devices are known - spherometers, designed, in particular, to control the shape of astronomical mirrors, containing supporting elements and a moving probe, with which the deflection arrow of a monitored mirror is measured (1. A disadvantage of the known device is the low accuracy due to deformations of the monitored mirror and the device itself, as well as low productivity.
Наиболее близким устройством по своей технической сущности вл етс интерферометр дл контрол формы астрономических зеркал, например, параболических зеркал крупных телескопов, содержащий последовательно расположенные монохраматический источник света, фокусирующее устройство , компенсатор и светоделнтельный элемент , эталонное сферическое зеркало, оптическую систему дл фотографировани интерференционной картины и плоско-выпуклую линзу с обращенной к контролируемому зеркалу эталонной сферической поверхностью , ралиус которой равен радиусу кривизны при вершине контролируемого зеркала 2.The closest device in its technical essence is an interferometer for controlling the shape of astronomical mirrors, for example, the parabolic mirrors of large telescopes, containing sequentially located monochramatic light source, a focusing device, a compensator and a beam-making element, a reference spherical mirror, an optical system for photographing an interference pattern and a plane -convex lens with a reference spherical surface facing the controlled mirror, radial of which d is the radius of curvature at the vertex of the controlled mirror 2.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU762316426A SU662795A1 (en) | 1976-01-12 | 1976-01-12 | Interferometer for checking the shape of astronomical mirrors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU762316426A SU662795A1 (en) | 1976-01-12 | 1976-01-12 | Interferometer for checking the shape of astronomical mirrors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU662795A1 true SU662795A1 (en) | 1979-05-15 |
Family
ID=20646316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU762316426A SU662795A1 (en) | 1976-01-12 | 1976-01-12 | Interferometer for checking the shape of astronomical mirrors |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU662795A1 (en) |
-
1976
- 1976-01-12 SU SU762316426A patent/SU662795A1/en active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2206212A1 (en) | Phase shifting diffraction interferometer | |
| RU2658106C1 (en) | Interference method for definition of the position of the aspheric surface axis and the device for its implementation | |
| RU169716U1 (en) | Device for controlling convex aspherical optical surfaces of high-precision large-sized mirrors | |
| SU662795A1 (en) | Interferometer for checking the shape of astronomical mirrors | |
| US3261260A (en) | Vibration compensated optical viewing system | |
| Blazit et al. | The angular diameters of Capella A and B from two-telescope interferometry | |
| RU162917U1 (en) | TWO-MIRROR OPTICAL SYSTEM ADJUSTMENT DEVICE | |
| SU523274A1 (en) | Interferometer to control the quality of convex hyperbolic mirrors of a cassegrain telescope | |
| RU203510U1 (en) | ADJUSTMENT DEVICE FOR TWO-MIRROR CENTERED OPTICAL SYSTEM | |
| RU2082992C1 (en) | Cosmic telescope (versions) | |
| EP0137976A2 (en) | Interferometric metrology of surface figures | |
| SU529362A1 (en) | Interferometer for studying the quality of surfaces and aberrations of large-sized optical elements and transparent inhomogeneities | |
| SU448347A1 (en) | Interferometer to control the surface shape of the convex spherical surfaces of large diameter lenses | |
| SU640227A1 (en) | Optical system for investigating transparent heterogeneities | |
| SU1295211A1 (en) | Interferometer for checking shape of aspherical surfaces | |
| SU729440A1 (en) | Device for contact-free checking of large astronomical aspheric mirrors | |
| SU1543276A1 (en) | Compensator for monitoring shape of aspherical surfaces | |
| SU1153235A1 (en) | Compensator for quality control of astronomical mirrors | |
| SU1476306A1 (en) | Theodolite | |
| GB773238A (en) | Improvements relating to apparatus for indicating small movements | |
| SU1226041A1 (en) | Interferometer for testing cylindrical surfaces | |
| SU1534314A1 (en) | Reading device | |
| SU1434305A1 (en) | Compensator for monitoring the shape of parabolic surfaces of revolution | |
| SU1610248A1 (en) | Interferometer for checking the shape of convex spherical parts | |
| SU440636A1 (en) | Mirror-lens compensator for quality control of astronomical mirrors of large telescopes |