refractor

The other advantage is that they can be made much larger because the mirrors don't need the same kind of support as the lenses in a refractor model.
L'autre avantage est qu'elles peuvent être beaucoup plus grande parce que les miroirs n'ont pas besoin du même type de soutien que les lentilles dans un réfracteur modèle.
The other advantage is that they can be made much larger because the mirrors don't need the same kind of support as the lenses in a refractor model.
L'autre avantage est qu'ils peuvent être beaucoup plus grande parce que les miroirs n'ont pas besoin du même type de soutien que les lentilles dans un modèle de lunette.
Although, you will probably want to start out with one of two basic designs, refractor or reflector, always learn as much as you can about what you want to buy so you can be sure to get the best equipment for your money.
Bien, vous voudrez probablement commencer par l'un des deux modèles de base, réfracteur ou réflecteur, toujours en apprendre autant que possible sur ce que vous voulez acheter si vous pouvez être sûr d'obtenir le meilleur équipement pour votre argent. BR * *]
Refractor telescopes are made with two lenses; each at opposite ends of the instrument.
Refractor télescopes sont fabriqués avec deux lentilles ; chaque aux extrémités opposées de l'instrument.
I wanted a focuser for a 70mm refractor I was making with my six-year-old son.
Je voulais un focuser pour une lunette de 70mm que je faisais avec mes six ans, son fils.
Glass lenses with a stippled front refractor or with a front refractor composed of prismatic elements, with an external diameter of more than 121 mm but not exceeding 125 mm
Lentilles en verre, pourvues de points réfringents ou d'éléments prismatiques, d'un diamètre extérieur supérieur à 121 mm mais n'excédant pas 125 mm
Glass lenses with a stippled front refractor or with a front refractor composed of prismatic elements, with an external diameter of more than 121 mm but not exceeding 125 mm
Lentilles en verre, pourvues de points réfringents ou d’éléments prismatiques, d’un diamètre extérieur supérieur à 121 mm mais n’excédant pas 125 mm
Glass lenses with a stippled front refractor or with a front refractor composed of prismatic elements, with an external diameter of more than 121 mm but not more than 125 mm
Lentilles en verre, pourvues de points réfringents ou d'éléments prismatiques, d'un diamètre extérieur supérieur à 121 mm mais n'excédant pas 125 mm
Glass lenses with a stippled front refractor or with a front refractor composed of prismatic elements, with an external diameter of more than 121 mm but not exceeding 125 mm
Châtaignes et marrons (Castanea spp.), frais
Glass lenses with a stippled front refractor or with a front refractor composed of prismatic elements, with an external diameter of more than 121 mm but not more than 125 mm
Lentilles en verre, pourvues de points réfringents ou d’éléments prismatiques, d’un diamètre extérieur supérieur à 121 mm mais n’excédant pas 125 mm
Glass lenses with a stippled front refractor or with a front refractor composed of prismatic elements, with an external diameter of more than 121 mm but not more than 125 mm
Châtaignes et marrons (Castanea spp.), frais
Glass lenses with a stippled front refractor or with a front refractor composed of prismatic elements, with an external diameter of more than 121 mm but not exceeding 125 mm
LA COMMISSION DES COMMUNAUTÉS EUROPÉENNES,
Glass lenses with a stippled front refractor or with a front refractor composed of prismatic elements, with an external diameter of more than 121 mm but not more than 125 mm
LA COMMISSION DES COMMUNAUTÉS EUROPÉENNES,
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