1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58astronomical telescopesICS 37.020Optics and optical instruments Specifications for BRITISH STANDARD
2、BS ISO 14134:2006BS ISO 14134:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 September 2006 BSI 2006ISBN 0 580 49032 7Amendments issued since publicationAmd. No. Date Commentscontract. Users are responsible for its correct application
3、.Compliance with a British Standard cannot confer immunity from legal obligations.National forewordThis British Standard was published by BSI. It is the UK implementation of ISO 14134:2006.The UK participation in its preparation was entrusted to Technical Committee CPW/172, Optics and photonics.A li
4、st of organizations represented on CPW/172 can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a INTERNATIONALSTANDARDISO14134First edition2006-08-15Reference numberISO 14134:2006(E)Optics and optical instruments Specifications for
5、 astronomical telescopesOptique et instruments doptique Spcifications pour tlescopes astronomiquesBS ISO 14134:2006iiiiiForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies(ISO member bodies). The work of preparing International Stan
6、dards is normally carried out through ISOtechnical committees. Each member body interested in a subject for which a technical committee has beenestablished has the right to be represented on that committee. International organizations, governmental andnon-governmental, in liaison with ISO, also take
7、 part in the work. ISO collaborates closely with the InternationalElectrotechnical Commission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to
8、prepare International Standards. Draft International Standardsadopted by the technical committees are circulated to the member bodies for voting. Publication as anInternational Standard requires approval by at least 75 % of the member bodies casting a vote.Attention is drawn to the possibility that
9、some of the elements of this document may be the subject of patentrights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 14134 was prepared by Technical Committee ISO/TC 172, Optics and photonics, Subcommittee SC 4,Telescopic systems.BS ISO 14134:2006blank1Optics
10、 and optical instruments Specifications for astronomical telescopes1ScopeThis International Standard applies to astronomical telescopes, including finder telescopes, and to theirfunctional specifications.These specifications are restricted to amateur astronomical telescopes, which should be distingu
11、ished fromhand-held or mounted general purpose monocular telescopes.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For datedreferences, only the edition cited applies. For undated references, the latest edition of the referenced docum
12、ent(including any amendments) applies.ISO 68-1, ISO general purpose screw threads Basic profile Part 1: Metric screw threadsISO 10109-4:2001, Optics and optical instruments Environmental requirements Part 4: Test requirementsfor telescopic systemsISO 14132-1, Optics and optical instruments Vocabular
13、y for telescopic systems Part 1: General terms andalphabetical indexes of terms in ISO 14132ISO 14132-4, Optics and optical instruments Vocabulary for telescopic systems Part 4: Terms forastronomical telescopesISO 14490-4, Optics and optical instruments Test methods for telescopic systems Part 4: Te
14、st methodsfor astronomical telescopes3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 14132-1and ISO 14132-4 shall apply.4 Specifications4.1 Optical characteristics: values and tolerancesThe values and tolerances for optical characteristics of astronom
15、ical telescopes are specified in Table 1.The characteristics specified in Table 1 shall be measured in accordance with ISO 14490-4.BS ISO 14134:20062Tolerances for clear aperture and focal length of the objective lens (primary mirror); focal length of the eyepiece;clear aperture, magnification and a
16、ngular field of view in objective space of the finder telescope shall beobtained by taking nominal values as reference.The magnification and field of view in the object space of a finder telescope provided with a dioptreadjustment mechanism shall be assessed at 0-setting of the dioptre scale. Wherev
17、er no dioptre adjustmentmechanism is provided, the magnification of the finder shall be checked when the finder is focused to infinity.4.2 Mechanical requirements4.2.1 The moving parts shall operate smoothly and reliably. Excessive oiling shall not be used, and parts otherthan moving parts shall not
18、 be contaminated with oil or grease.4.2.2 An astronomical telescope shall not change collimation in any position.4.2.3 An astronomical telescope provided with a finder telescope shall have an adjustment device in order tobring the optical axis of the finder within 1/2 of the real visual angle of the
19、 main telescope when the maintelescope is set to maximum magnification.NOTE Maximum magnification is defined as the value obtained when the exit pupil diameter is .4.2.4 The eyepiece of a finder telescope with a dioptre adjustment mechanism shall be capable of adjusting inthe range of to or higher.F
20、or finders without a dioptre adjustment mechanism, the eyepiece shall be fixed to .4.2.5 A mounting that supports an astronomical telescope shall always be made robust and stable. For anequatorial-type mounting the polar axis and the declination axis shall be at right angles to each other. When anyk
21、ind of accessory is attached to the lens-barrel or eyepiece side, the point of intersection of the axes shall stayin balance, or be capable of being rebalanced in a simple manner.In an alt-azimuth telescope-type mounting, the plane including the altitude axis and the horizontal plane againstthe azim
22、uth axis shall be mutually perpendicular. When any kind of accessory is attached to the lens-barrel oreyepiece side, the altitude axis shall keep the balance.Table 1 Optical characteristics: values and tolerancesTelescope Item Characteristics value or toleranceMainClear aperture of objective (mm)Ref
23、ractiveReflectiveFocal length of objective (mm)RefractiveReflectiveFocal length of eyepiece (mm)Angular resolution in object space and on the optical axis(arc second)general purpose high performanceFinderMagnificationClear aperture of objective (mm)Field of view in the object space (degrees)Reticle
24、parallax (dioptre )Angular resolution on the optical axis (arc second)NOTE 1 The resolution on the optical axis is used as a criterion for image quality.NOTE 2 = clear aperture of the objective in millimetres.NOTE 3 = magnification of the finder.1,02,02%3%5%140D120D10 %1,05%= m10,5100D1mm+2m14m11m1B
25、S ISO 14134:200634.2.6 All rotary axes of the mounting which support an astronomical telescope shall operate smoothly, inparticular, the fine adjustment devices shall be free from squeak, play and unevenness.4.2.7 All accessories shall be easily exchangeable.4.2.8 The bases of a tripod or pillar-typ
26、e support, using suitable materials for strength, shall be robust andefficient in operation of the telescope and in observation.4.2.9 Driving mechanisms of the polar and declination axes (in the equatorial telescope) and of the altitudeand azimuth axes (in the alt-azimuth telescope) which use electr
27、ic motor drives shall be smooth and precise inoperation.4.3 Interfaces for accessories4.3.1 GeneralEyepieces and other accessories shall be interchangeable by means of suitable interfaces.4.3.2 Sleeve-fitting type interfaceEyepieces of the sleeve-fitting type shall have one of the following outer ba
28、rrel diameters and tolerances(in mm):The sleeve-fitting type interface shall be provided with a clamp or a friction drop-preventing device.4.3.3 Screw-in type interfaceA screw-in type interface shall be provided with the external screw in accordance with ISO 68-1 fora camera body.4.4 Optical require
29、ments4.4.1 For the purpose of solar observation, in order to prevent eye injury, a safety device such as a solarprojection plate, a solar objective filter, or a Herschel wedge shall be available. Solar eyepiece filters shall not beprovided with the telescope or supplied as accessories.4.4.2 Measures
30、 shall be taken to minimize the intensity of internal reflections and flares in the telescope tube,eyepiece tube and eyepiece subsidiary tube.4.4.3 The optical components shall exhibit no mechanical damage (scratches, chips), contamination, stain orinhomogeneity.A minor quantity of small bubbles and
31、 striae are permissible, provided they do not impair the performance.4.4.4 The scale lines of the reticle of the finder telescope shall be free from broken lines.4.5 Environmental requirementsAstronomical telescopes shall withstand the test conditions prescribed for instruments type 06 or 07 inaccor
32、dance with ISO 10109-4:2001.24,500,131,7500,150,800,1M42 0,75BS ISO 14134:200645 Consumer information5.1 Designation and markingAn astronomical telescope and its components or accessories shall have the designations and markings listedin Table 2.5.2 Product informationProduct catalogues, user manual
33、s and other technical information brochures for astronomical telescopes shallprovide complete information on at least the technical characteristics listed in Table 3.Table 2 Designation and markingPart CharacteristicsDesignation and markingsrequired recommendedMain telescopeFocal length (mm)Clear ap
34、erture of objective (mm)Brand nameProduct nameCountry of originFinder telescopeaMagnificationEntrance pupil diameter (mm)Field of view (degrees)EyepieceTypeFocal length (mm)Each componentSerial numberBrand name or signaBasic designation for the finder scope is given by the combination of magnificati
35、on and diameter of entrance pupil e.g.: .Table 3 Product informationPart CharacteristicsDesignation and markingsrequired recommendedMain telescopeFocal length (mm)Clear aperture of objective (mm)Obscuration ratio of reflective telescopesa(%)Brand nameProduct nameCountry of originFinder telescopeMagn
36、ificationEntrance pupil diameter (mm)Field of view (degrees)EyepieceTypeFocal length (mm)Each componentInterface mechanical dimensionMass or weight (kg)Brand name or signaRatio of the diameter of the central obscuration to the diameter of the primary mirror.6 20BS ISO 14134:200655.3 ComplianceProduc
37、ts complying with the requirements given in this International Standard may be designated asastronomical telescopes in accordance with ISO 14134.BS ISO 14134:2006BS ISO BSI389 Chiswick High RoadLondonW4 4AL14134:2006BSI British Standards InstitutionBSI is the independent national body responsible fo
38、r preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter.RevisionsBritish Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or ed
39、itions.It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the i
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