|
Technologie výroby spojky achromatického dubletu
Rail, Zdeněk ; Melich, Zbyněk ; Šrajer, Bohdan ; Šípová, Gabriela ; Ulrichová, Iva ; Franců, Helena ; Melich, Radek ; Vápenka, David ; Tomka, David ; Thoř, Tomáš
Tento referát popisuje technologický postup výroby spojky achromatického dubletu o průměru 158 mm a ohniskové vzdálenosti 2500 mm. Sklo, ze kterého byla vyrobena původní spojka, bylo nehomogenní a dublet špatně zobrazoval. Z tohoto důvodu jsme se rozhodli vyrobit novou spojku. Její výroba byla provedena na původních strojích naší dílny. Dublet je umístěn v dalekohledu na turnovské hvězdárně a slouží k veřejnému pozorování oblohy.
|
| |
|
Methodology of camera spectral response measurement
Melich, Radek ; Václavík, Jan ; Žídek, Karel
Spectral response of the camera will be measured using monochromator in conjunction with an integration sphere. Camera without objective will be placed in one port of the integrating sphere and light beam from monochromator will be fed into perpendicular port. Sensor of the camera sensor will be therefore uniformly illuminated by diffused light from monochromator. Proposed FWHM of the monochromator is 15 nm as a trade-off between light intensity provided by monochromator and deformation of spectral characteristic (Picture XY). Diameter of the integrating sphere has to be larger than 100 mm to ensure uniform illumination over sensor area.
|
| |
| |
| |
|
Reflectivity of a mirror in XUV spectral region (46.9 nm).
Schmidt, Jiří ; Koláček, Karel ; Štraus, Jaroslav ; Frolov, Oleksandr ; Prukner, Václav ; Melich, Radek ; Psota, Pavel ; Sobota, Jaroslav ; Fořt, Tomáš
A focusing mirror as an optical element is used in our applications that require light collection (e.g. for laser ablation studies). A knowledge of the mirror reflectivity is important for determination of focused laser pulse energy, or for determination of local fluencies near the laser focus. The reflectivity of our spherical focusing mirror with(/without) multi-layer coating was measured. Reflection coefficients of this mirror in a long period of time are also reported. Further, the incidence-angle dependence of the XUV reflectivity of flat mirrors is presented as well.
|
|
METIST mirror M1 FS
Lédl, Vít ; Melich, Radek ; Vít, Tomáš
Scope of the document is to provide required test results with respect to the structure and optical performance of individual optical surfaces of M1 mirror, FS version. The mirror has a unique numbering M1-C20-23.
|
|
METIS mirror M2 FS
Lédl, Vít ; Melich, Radek ; Vít, Tomáš
Scope of the document is to provide required test results with respect to the structure and optical performance of individual optical surfaces of M2 mirror FS version. The mirror has a unique numbering M2-C21-24.
|
| |