Corrector Lens

mounting secondary lens in cassegrain??

how can i mount a secondary hyperbolic lens to my correcting lens in a schmidt-cass i'm working on?i plan on drilling a hole in the corrector to eliminate spyder defraction. any ideas??

I think it would be better to clarify the question a bit. If it is an SCT then it has a corrector which holds the secondary. Therefore, there is no spider diffraction because the secondary is held up by glass. Since there is a hole in the corrector to hold the secondary already, it isn't clear why you are drilling one. So it's hard to figure out what you're doing.

Modifying an SCT is a very technical question for Yahoo! answers and it seems to me that you would have better luck on one of the Astromart forums. Or, read the wiki article below and check out the links that it provides at the bottom.

Good luck! GN

Corrector $73.28 High Quality Content by WIKIPEDIA articles A corrector is a person who or object that practices correction, usually by removing or rectifying errors. The word is originally a Roman title corrector, derived from the Latin verb corrigre, meaning an action to rectify, to make right a wrong. Apart from the general sense of anyone who corrects mistakes, it has been used as, or part of various specific titles and offices, sometimes quite distant from the original meaning. Author: Miller, Frederic P./ Vandome, Agnes F./ McBrewster, John Binding Type: Paperback Number of Pages: 76 Publication Date: 2010/10/01 Language: English Dimensions: 5.98 x 9.01 x 0.18 inches

Orion Focal Reducer Corrector for ED100 Telescope $179.99 If you're an astrophotographer seeking even better performance from your Orion 100mm ED Refractor Telescope, our 0.85x Reducer-Corrector is for you. Designed specifically for use with this telescope and a DSLR camera, it reduces the scope's effective focal length to produce a faster system, which allows shorter exposure times. It also provides excellent field correction (flattening), yielding sharp stars out to the edge of a camera chip as large as 36mm x 24mm. That's even larger than the APS-C size chip found in DSLRs used most often by astrophotographers. The Focal Reducer-Corrector achieves the nominal 55mm distance required from the optics to the DSLR's sensor for critical focus. It features a two-element lens assembly, with one lens made from high-quality extra-low dispersion (ED) glass. The optics are fully multi-coated to minimize light reflection off the lens surfaces. It reduces the focal length from 900mm to 765mm (f/9.0 to f/7.65), producing a faster system for improved astrophotograpy. The Reducer-Corrector threads onto the focuser drawtube's male threads for a secure fit that will not introduce flexure. T-threads on the camera side accept your camera's T-ring. You will need a wide T-ring for your brand of camera, sold separately. For owners of Orion's ED100 refractor who want to take astrophotos, this is a must-have accessory. It works well for daytime terrestrial photography too! Includes two thread-on lens caps. One-year limited warranty.

Orion Focal Reducer Corrector for ED120 Telescope $199.99 The 0.85x Reducer-Corrector for the Orion ED120 120mm refractor (#9976) reduces the effective focal length, producing a wider field and brighter images, and allowing shorter exposure times for astrophotography. It also provides excellent field correction (flattening), yielding sharp stars out to the edge of a camera chip as large as 36mm x 24mm, which is even larger than the APS-C size chip housed in the DSLRs most widely used by astrophotographers! The Reducer-Corrector is designed exclusively for use with DSLR cameras, providing the nominal 55mm distance required from the optics to the camera sensor to achieve critical focus. You will need a wide T-ring for your brand of camera (sold separately). This astrophotographic accessory features a two-element lens assembly, with one lens made from high-quality extra-low dispersion (ED) glass. The optics are fully multi-coated to minimize light reflection off the lens surfaces. It's designed for use with only the original ED120 refractor, not the EON 120ED. The effective focal length is shortened from 900mm to 765mm (f/7.5 to f/6.38), creating a faster system for improved astrophotographic performance. The Reducer-Corrector threads onto the focuser drawtube's male threads for a secure fit that will not introduce flexure. Threads on the camera side accept a wide T-ring for your camera type. This is a 'must-have' accessory for better astrophotography with Orion's ED120 refractors. Great for daytime terrestrial photography too! One Year Limited Warranty

DICTIONARY & SPELL CORRECTOR $43.99 DICTIONARY & SPELL CORRECTOR

Webster's Spelling Corrector Plus $18.95 Franklin Webster's Spelling Corrector Plus

Milani Corrector Stick (L)(Pack of 39) $11.53 Milani Corrector Stick (L) - Corrector Stick Medium

Webster's Electronic Spelling Corrector Plus $23.99 Webster's Electronic Spelling Corrector Plus

Sony FDAECF05 - Diopter Correction Lens. Each $13.45 Manufacturer: Sony. Each. Designed to adjust for farsightedness, the FDA-ECF05 +0.5 Diopter Eyepiece Corrector for Sony's Alpha Digital SLR Camera ensures accurate shooting. Capture spectacular, high-quality digital images with the Eyepiece Corrector perf

Sony FDAECF10 - Diopter Correction Lens. Each $13.12 Manufacturer: Sony. Each. Designed to adjust for farsightedness, the FDA-ECF10 +1.0 Diopter Eyepiece Corrector for Sony's Alpha Digital SLR Camera ensures accurate shooting. Capture spectacular, high-quality digital images with the Eyepiece Corrector just

Sony FDAECF15 - Diopter Correction Lens. Each $13.62 Manufacturer: Sony. Each. Designed to adjust for farsightedness, the FDA-ECF15 +1.5 Diopter Eyepiece Corrector for Sony's Alpha Digital SLR Camera ensures accurate shooting. Capture spectacular, high-quality digital images with the Eyepiece Corrector just

Sony FDAECF30 - Diopter Correction Lens. Each $13.62 Manufacturer: Sony. Each. Designed to adjust for farsightedness, the FDA-ECF30 +3.0 Diopter Eyepiece Corrector for Sony's Alpha Digital SLR Camera ensures accurate shooting. Capture spectacular, high-quality digital images with the Eyepiece Corrector just

Sony FDAECN10 - Diopter Correction Lens. Each $13.12 Manufacturer: Sony. Each. Designed to adjust for nearsightedness, the FDA-ECN10 -1.0 Diopter Eyepiece Corrector for Sony's Alpha Digital SLR Camera ensures accurate shooting. Capture spectacular, high-quality digital images with the Eyepiece Corrector jus

Sony FDAECN30 - Diopter Correction Lens. Each $13.62 Manufacturer: Sony. Each. Designed to adjust for nearsightedness, the FDA-ECN30 -3.0 Diopter Eyepiece Corrector for Sony's Alpha Digital SLR Camera ensures accurate shooting. Capture spectacular, high-quality digital images with the Eyepiece Corrector jus

ST-01011 Spine Corrector $579 Stott Pilates' ST-01011 Spine Corrector can be used to perform exercises lengthening and strengthening the torso, shoulders, back and legs.

The Company of Animals Pet Corrector Dog Training Aid $10.29 The Company of Animals Pet Corrector Dog Training Aid

Franklin KID-1240 Children's Talking Dictionary & Spell Corrector $45.12 Franklin KID-1240 Children's Talking Dictionary & Spell Corrector

Franklin Electronic Dictionary & Spell Corrector KID1240 $46.53 Franklin Electronic Dictionary & Spell Corrector KID1240

Men Deep Wrinkle Corrector - 30ml/1oz $45.95 Shiseido Men Deep Wrinkle Corrector 1.0 oz / 30ml Scent: Original

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Adobe Photoshop CS2: The Lens Correction Filter

i need help setting up a fisheye for skating?

i have a fisheye lens. it came with a macro, but i like it better without because it's wider. the macro is threaded 37mm. the problem is when i take off my macro, since i tape it on with electrical tape it wobbles. i have a panasonic pv-gh320. it comes with a shakey hand corrector. could this be the corrector that makes it appear wobbely. is there a way to make it not wobble?

Well, at least you're not using duct tape.

The wobbly connection is definitely a problem. Panasonic camcorders use Optical Image Stabilization, which are based upon a known lens configuration. Your add-on confuses the OIS sensor.

Fortunately, there's an easy solution. Turn off the image stabilization. You'll actually get a better picture, especially with a wide angle lens. For the best image, use a tripod with the OIS turned off and you should be happy with the results.