The insert tube is smooth-sided and is threaded for standard 1.25" astronomy filters. All lens edges are blackened for superior contrast. The long eye relief allows for a comfortable viewing distance. All air to glass surfaces have a multi-layer coating (so these are fully multi-coated, even though the barrel imprint may say "multi coated") for maximum light transmission. This high quality eyepiece features a 5-element design that offers superior sharpness. All rings are hinged, felt-lined and have clamp-style rings for easy mounting or repositioning of. These telescope tube rings are high quality, cast-aluminum mounting rings that can be used for mounting telescope tubes on various mounts or on guidescope rails. With features generally found in more expensive eyepieces, this ocular will escalate the joys of viewing with high-contrast views and amazing color correction. Rings will fit tubes with an outer diameter of 6.20' - 6.26' (Approx. This 1.25" Agena enhanced wide angle eyepiece is sure to provide many “ooohs,” “ahhhs,” and “wows” from those who take advantage of its generous 66-deg field of view. Color Correction & Minus Violet Filters.Correctors, Focal Reducers & Flatteners.I somehow lost the two screws that will hold the guide camera in the scope. Saved me from buying another Cheshire with out the crosshairs. Added a bracket and guide scope to the RedCat today. I found that I had to back out the screw I put in by about a 1/32 turn. When I put the screw back in inially I tightened it down to the same level as the other two push screws. I found a post on the internet that said just unscrew the crosshair piece and it would work much better. I tried it but was having a hard time seeing the donut becuase of the crosshairs in the eyepiece. I bought the Agena Cheshire Collimation Eyepiece to check and make sure that it was still collimated. When I got it one of the push screws in the lens cell had fallen out inside the dew shield. I bought a ES AR152 6" refractor about a month ago. Quality Lenses,Easy to Use,Accurate,Lightweight,Strong Construction,Compact Cons: This will have no impact on its performance.ĥ.0 Cheshire Collimation Eyepiece and ES AR1 Pros: This is a manufacturing artifact and not a defect. You may notice a small dimple on the angled silver plate.It will be of no use with fixed cell objectives that cannot be adjusted. This item can only be used if your refractor telescope cell has a push-pull or other mechanism to adjust the lens elements.Use of this item assumes that your focuser is aligned properly with your telescope tube.There are two adjustment screws and a spring loaded bolt holding the finder in place at one end of the sleeve, whilst there is a rubber o-ring holding. 179.99 Now 152.99 You Save 27. This Cheshire eyepiece fits in 1.25" focusers or in 2"-1.25" adapters. Hi all, I have a Celestron 6 x 30 finder scope, the kind that has a quick release dovetail bracket - a bit like this one. As with most other telescope collimation/alignment procedures, use of this accessory requires patience and experience. The dual images can sometimes be hard to see (especially in very bright or very faint light) but you will see them. No additional instructions are included with this product, but you can easily find additional information about Cheshire eyepieces and their use on the internet. Thats it! With precise collimation, your refractor telescope will deliver the best image it can. Adjust the objective cell's push-pull bolts until the small circles merge into one. You will see one or more small faint circles (usually overlapping) near the center. Look into the small opening at the top of the eyepiece. Use natural daylight or shine a flashlight into the side opening with the 45-deg angled silver plate. The rings shown in the images are included however. There are no paint scrapes from finder rings, as it was never used with rings. Objective Diameter 50mm - Focal Length 162mm - Focal Ratio f/3. The coatings and glass are as new with no molds or fungus or other defects. ![]() To use this eyepiece, simply cap the telescope, remove the diagonal, and place the eyepiece directly in the focuser. The objective is untouched and has the usual few dust particles on it. Is collimating your refractor a real chore? Collimating your refractor is quick and easy when you use this 1.25" Cheshire collimating eyepiece.
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