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Optical Mirror
How to maintain mirror and eye piece lense and care for a Newtonian Reflector?
Just brought a skywatcher p13065 reflector. I was wondering how can one clean the eye piece lenses and the mirror after constant use.
Any particular cleaning solutions. How does one disasseble the mirror for cleaning and does disassembly of the mirror cause collomation errors or any other optical issues at reassembly.
Thanks
Do not touch the mirror at all; it should remain clean enough for years and years. There can be quite a bit of visible dust and dirt on it without harming its performance, but you can easily scratch it while cleaning which will harm its performance. And yes, if you remove the mirror and put it back again you will need to collimate again, although it isn't so hard to do.
As for the eyepieces, I use distilled water and Q-tips to clean them. I also use toothpicks to get the edges, but be careful since modern eyepieces can have optical coatings on them that are easily damaged.
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Beam Shutter Rotary Solenoid (optic mirror laser Ledex) | |
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Optical Mirror Style Cufflinks $9.99 HighlightsGreat looking designMade from high quality materialUnique and fashionable designSuitable for any occasionSpecificationsSize Approx (cm): 20 x 7 x 3Weight Approx (kg): 90g |
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Perfect Mirror $76.47 High Quality Content by WIKIPEDIA articles A perfect mirror is a theoretical mirror that reflects light (and electromagnetic radiation in general) perfectly, and doesnt transmit or absorb it.Domestic mirrors are not perfect mirrors as they absorb a significant portion of the light which falls on them.Dielectric mirrors are glass or other substrates on which one or more layers of dielectric material are deposited, to form an optical coating. A very complex dielectric mirror can reflect up to 99.999 of the light incident upon it, for a narrow range of wavelengths and angles. A simpler mirror may reflect 99.9 of the light, but may cover a broader range of wavelengths. Author: Surhone, Lambert M./ Timpledon, Miriam T./ Marseken, Susan F. Binding Type: Paperback Number of Pages: 108 Publication Date: 2010/06/15 Language: English Dimensions: 5.98 x 9.01 x 0.25 inches |
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MX518 Gaming-Grade Optical Mouse $44.95 If you´re going to play at the highest level, you need a mouse that gives you an edge. The Logitech MX 518 Gaming Grade Optical Mouse does exactly that with its ultra high resolution, 1600 dpi MX Optical Engine that delivers lightning fast response and mirror smooth tracking. The MX 518´s advantages don´t stop there. You get instant, on the fly sensitivity adjustment that lets you switch effortlessly from pixel precise targeting to fast twitch acceleration, without any software. And the contoured grip ensures peak performance and comfort, even during the most intense gaming sessions. |
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Zadro LED-Lighted Mirror - Silver $23.99 This mirror features optical-quality glass for glare-free, shadow-free reflection and 10x magnification that allows close-up viewing and clear visibility. |
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Scythe II Mirror $134.99 Kuryakyn Scythe II Mirror The Scythe™ II Mirrors will clearly cut all competitors down to size! Knife shaped mirror head provides a sleek streamlined profile Fitted with top quality optical glass The new stem features a graceful arc, placing the mirror head in a more user-friendly position Substantial, smooth operating swivels, adjust easily & hold their position securely All hardware is included Mirror adapters required for installation on metric cruisers (sold separately) Click Here for Universal Metric Cruiser Mirror Adapters Click Here for Yamaha Cruiser Mirror Adapters |
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Zadro FC27 Suction Cup Mirror in 7x $30.98 The Zadro FC27 suction cup mirror is available in 7x magnification. The 7" diameter optical quality mirror attaches to any smooth surface with the included super holding suction cups. 7x magnification. 7" diameter optical quality mirror. Clear acrylic finish. |
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Mirror Mirror $7.49 Mirror Mirror |
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Aluminum Evaporation Optical Mirror Making
Is it possible to measure a distance to a mirror by any optical instrument?
The mirror is rotated at 45 degrees, that it is impossible to see any object BOTH directly and in the mirror.
I assume you can't run around setting things up, and you don't want to consider treating the mirror as just an object and using a known lens and measuring the distance to the real image of the mirror. You can triangulate. There has to be an object seen in the mirror. The ray from you to the mirror to the object it reflects is bent at 90 degrees. You can't measure the hypotenuse (distance X from you to the object) directly by optical means but could locate the object by surveying (around or over the obstacle that prevents direct view); that gives you X and the angle theta. Distance to mirror = Xcos(theta).
OK, this is a cheat (you really do run around setting things up), but it sounds neat, doesn't it?
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