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It is anessential collimation device for any reflector telescopes and also a greataccessory for precisely collimating the optics of your reflector telescope toachieve the best image the telescope can deliver. Well built black anodized solid aluminum metal body15cm LongSoft eyecup.Free dust capsBrass CrosshairFitting diameter 1.25 inch
No instructions are included withthe item but this kind of information can be found easily on the internet. Here is some tips for using it. To use the collimating eyepiece, insert it into the eyepiece tube of your telescope and illuminate the angled ring. Sight down the tube and note the crosshair target. Center the First Mirror (diagonal in a Newt, secondary in a CAT) on the crosshair, and adjust its tilt until the bright ring the collimator is producing is centered in the reflection. Next, adjust each successive mirror in the scope so that the image of the ring is concentric with the optic. Professional opticians refer to this as working BACK THROUGH the system, ie.: adjusting each mirror in succession from the eyepiece outwards. In other words, before you align the primary on a CAT system, you have to have the secondary aligned, because its the first thing you SEE while looking up the tube.
The Cheshire eyepiececan be used day or night, on just about any reflecting telescope. If youwant to get the best from your telescope, buy this useful tool for only 29!
I also have ashort Cheshire Collimating eyepiece for sale 181107523622. Please visit my ebay shop at https://stores.ebay.co.uk/Joys-Optics for more bargains! Delivery:
1.25″ Cheshire Collimating Eyepiece for Telescope,
Long Version
Delivery: Free P&P for UK buyers. The item will be posted to you the same day by Royal Mail First Class Post when your payment is received before 13:00 O’clock. Otherwise, it will be posted the next day. Please note that all payment received over the weekend will be posted the following Monday. International Buyers please see postage details.
Seller note about the postage: I have been trying my best to reduce my P&P charges for all my clients. Please be advised that as the size of the item the post will be classed a Packet and the minimum postage for a Packet is 3.20. You can find this information from Royal Mail’s webpage: https://www.royalmail.com/personal/uk-delivery/1st-class-mail
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Category: Cameras and Photography:Telescopes and Binoculars:Telescopes
Location: Guildford