WebJan 3, 2024 · Cassegrain telescopes use a parabolic primary mirror with a hyperbolic secondary mirror. The secondary mirror directs the light through a hole in the center of the primary mirror where it comes to focus. ... The telescope came with a tube cover, a GSO two speed focuser, one 2-inch extension ring, two 1-inch extension rings, two-dovetail … WebSep 15, 2024 · 8. Collimate the secondary. Remove the laser and install a cheshire. Mine needed a layer of scotch tape to fit as good as the laser. Collimate the secondary tilt and only pay attention to the center/smaller reflection circles and the …
Apertura 6" Ritchey-Chretien Optical Tube Assembly - 6RC
WebReflection: 93%. Focal ratio f/4.5 and slower. PRICE: 4370 EUR. Focal ratio faster then f/4.5. PRICE: 4810 EUR. *excl.Shipping costs. Contact us for prices of any diameters which is not listed here or for thicker mirrors. Here you can see the independent test results of two of our telescope mirrors. Webhubbleoptics.com mechatronic associates
Observatory GMU College of Science - George Mason University
WebSep 28, 2014 · GSO Primary Mirrors - posted in ATM, Optics and DIY Forum: Interested in the GSO parabolic primary mirrors that Agenaastro sales. ... but seems like one gets … WebStyle 5. Super Duty II Wider center body, double vane ends - larger 1/4-20 size, recommended for 5 - 6.5" secondary mirrors and shorter f/ratio (f/4 or less).. Maximum tube inside diameter is 40", double vane end spaced 2.5" apart, 4.0" wide at center. Has an integrated adjustment plate for the secondary holder that stiffens the spider, resisting … WebSep 7, 2024 · For years, GSO has made dobsonian telescopes sold under various labels. Users of these scopes know the excellent quality of the optics included, and they have a well-dese. ... GSO's elliptical flat mirrors have the same high quality as their parabolic primary mirrors. Made from optical grade BK-7 glass, all mirrors have a reflective … pembina trails school calendar 2022-23