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National Repository of Grey Literature

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	The Technology of Manufacture of a Positive Lens of Achromatic Dublet Rail, Zdeněk ; Melich, Zbyněk ; Šrajer, Bohdan ; Šípová, Gabriela ; Ulrichová, Iva ; Franců, Helena ; Melich, Radek ; Vápenka, David ; Tomka, David ; Thoř, Tomáš This paper deals with manufacturing of a positive lens of achromatic dublet. Diameter of the dublet is 158 mm and its focal length about 2500 mm. The glass material of the former lens was inhomogeneous and the dublet provided bad images. This is why we decided to manufacture new lens. The process was made by means of former machines of our workshop. The telescope with this dublet is placed at the Observatory of Turnov and serves for public astronomical observation. Detailed record
	Several Optical Designs of Off-Axis systems Rail, Zdeněk ; Franců, Helena ; Ulrichová, Iva ; Šípová, Gabriela ; Vápenka, David ; Vávra, Emil This paper introduces several types of optimized off-axis mirror systems. Systems without central shading and color defects provide high-contrast imaging. They are suitable for use as astronomical telescopes or as precision laboratory collimators of parallel light beams. Many of these devices have been designed and constructed for various purposes in the Development Optical Workshop of the Academy of Sciences of the Czech Republic. Detailed record
	Study on polishing of CaF2 plane-parallel elements Procháska, František ; Thoř, Tomáš ; Šípová, Gabriela Determination of technological procedure for processing of plane-parallel and plano-convex CaF2 optical elements. That includes optical polishing as well as preparation of samples for polishing, i.e. cementing and grinding. Detailed record
	Processing of glass S-FPL 53 Melich, Radek ; Rail, Zdeněk ; Šípová, Gabriela The aim of the work is mastering of S-FPL53 material machining with respect to the optical surface shape accuracy and to minimize the surface microroughness. Detailed record
	A Glued Objective Lens of the Steinheil Type Rail, Zdeněk ; Franců, Helena ; Ulrichová, Iva ; Šípová, Gabriela ; Jareš, Daniel ; Kuryshev, V. ; Vápenka, David This paper analyses the achromatic dublets with an entrance lens of the flint glass. The objective lens of this construction were devised by German physician Carl August Steinheil in the half of the 19 th century. Several pieces of these dublets were manufactured for astronomical purposes in our workshop in the past. We discuse the mathematical evaluation and the method of manufacture of the glued Steinheil objective with plane exit surface. Detailed record
	The Repair of an Objective Lens 160/2500 of the Observatory in Turnov Rail, Zdeněk ; Melich, Zbyněk ; Šrajer, Bohdan ; Šípová, Gabriela ; Kaucká, Iva ; Franců, Helena ; Melich, Radek This paper brings the information about repair of the achromatic objective lens of diameter 160mm and focal length 2500mm produced by the Development Optical Workshop of the ČSAV in Turnov. The refractor with this dublet has become the main telescope of a local astronomical observatory. The positive lens contained impurities – schlieren and it was necessary to produce a new lens and change it. Detailed record
	PbWO4 materail technologic processing Melich, Radek ; Rail, Zdeněk ; Šípová, Gabriela Research report summarize an optical technologic processing of PbWOč material for needs of CRYTUR company Detailed record
	P3-TOP-TN-15001 Achievable microroughness of ASPIICS optical glass elements Bartoníček, Jiří ; Budasz, Jiří ; Hadincová, Ivana ; Horodyská, Petra ; Kaucká, Iva ; Kovačičinová, Jana ; Lédl, Vít ; Melich, Radek ; Pleštil, Jan ; Poláková, Ivana ; Procháska, František ; Psota, Pavel ; Rail, Zdeněk ; Šípová, Gabriela ; Šrajer, Bohdan ; Ulrichová, Iva ; Václavík, Jan ; Vápenka, David ; Vít, Tomáš The scope of this document is describe a test that investigates an achievable micro-roughness realized on different types of optical glasses [R1] that are planned to be employed for realization of PROBA3 coronagraph telescope. The test is realized with respect to the technological manufacturing possibilities of optical elements at TOPTEC facility. Detailed record

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