Search  for anything...
Astromania

Astromania 1.25Inch Metal Collimating Cheshire Eyepiece Without Laser for Newtonian Reflector Telescope - Short Version

    • Based on 249 reviews
Condition: New
Checking for product changes
$15.97 Why this price?
Save $1.01 was $16.98

Buy Now, Pay Later

As low as $3 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product
This item's return window has been extended for the holiday season: Returnable until Jan 31, 2025

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Only 2 left in stock, order soon!
Fulfilled by Amazon
Arrives Monday, Nov 25
Order within 18 minutes
Available payment plans shown during checkout

Size: Short Version


Features

  • Fits in 1.25 inch focusers and easy to use; simply cap the telescope; remove the diagonal and place the eyepiece directly in the focuser
  • For aligning optics of Newtonian reflectors; dobsonian reflectors and Schmidt-Cassegrain Telescopes
  • The short collimator for mirror telescopes has a 45 degree plate for easier visual accuracy
  • Item was made by aluminum with crosshair at the bottom allow quick and precise centering of the optics
  • This collimation eyepiece can be used for precisely collimating the Newtonian and Schmidt-Cassegrain reflector telescopes for better image quality

Brand: Astromania


Eye Piece Lens Description: Collimating


Objective Lens Diameter: 31.75 Millimeters


Telescope Mount Description: Altazimuth Mount


Product Dimensions: 6"D x 1.3"W x 1.3"H


Finderscope: Reflex


Item Weight: 3.1 Ounces


Exit Pupil: 5 Millimeters


Global Trade Identification Number: 46


Manufacturer: Astromania


Product Dimensions: 6 x 1.3 x 1.3 inches


Item Weight: 3.1 ounces


Item model number: SKU_AM_MCES1


Is Discontinued By Manufacturer: No


Date First Available: March 25, 2016


Manufacturer: Astromania


Country of Origin: China


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Nov 25

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Very nice!
Size: Long Version
Good quality all metal construction. Works exactly as it should!
Reviewed in the United States on July 24, 2024 by J
    • Works well, easy to use
Size: Long Version
Good price, did its job.
Reviewed in the United States on March 30, 2024 by Kent Johnson
    • does what most lasers won't
Size: Long Version
Seems to work good. I use i then my laser. I would have bought this first if I had known.
Reviewed in the United States on June 29, 2024 by Mike Kessler
    • Beautiful piece of metalwork.
Size: Long Version
Review Image by Warren Richardson Warren Richardson
This Cheshire eyepiece enables a precise adjustment of the secondary mirror, once you get it spaced correctly. A four inch extension was right for my ten inch Newt.My mirror was significantly off, requiring adjustment. I expect an improvement in my pictures. It's surprising to find such a well made item these days; the eyepiece is beautifully manufactured of heavy duty metal with an excellent finish. For the money it's an unbeatable value, if you have Newtonian telescope you need this. ... show more
Reviewed in the United States on October 24, 2022 by Warren Richardson Warren Richardson
    • Simple and Effective
Size: Short Version
Laser collimators are really convenient until you realize the device didn't hold calibration from shipping. Easier to ditch the convenience and get a Cheshire that's nearly as simple to use with the added peace of mind not having to worry if a laser is out of alignment. The only downside is being restricted to collimating your telescope during the day. You need plenty of light to use this bad boy. ... show more
Reviewed in the United States on December 20, 2022 by Steven
    • a solid collimating eyepiece
Size: Long Version
I use this with my 10" dob. It has a small field, so if you are very far out of collimation start by just eyeballing down the eyepiece tube and line things up. There are plenty of online resources to use these. Be aware that what it does is center the eyepiece to the center of the mirror. It isn't necessarily the case that the center of the parabolic curve is centered mechanically. Check your star shapes to make sure there isn't any coma after the collimating eyepiece is used. It is well made and all metal. ... show more
Reviewed in the United States on June 16, 2022 by EB
    • It works just as it should
Size: Short Version
Works really well, but you have to know what to expect and what to do. Read up or check online videos on how to use a collimating cheshire. The pinhole you look through on this one is very small, and the collimator is very short. The crosshairs are clear, and it works for collimating my 114mm reflector. Edited: May 4, 2018 I used this in the past few days to collimate my AR127 and ST80 refractors, so it works for refractors as well. You can unscrew and remove the crosshairs frame, a much appreciated feature of this cheshire. It looks like the crosshairs can even be screwed into any other 1.25" eyepiece, much like a filter, and used in centering stars and planets. For refractors, you should use a laser collimator to align the focuser tube to the primary lens first and foremost. If you need instructions on how to collimate a refractor, there are a lot of good resources online, especially in the backyard/amateur astronomy forums. ... show more
Reviewed in the United States on October 26, 2017 by JC
    • Just didn’t work
Size: Long Version
I was hoping to be able to fine tune my scopes using this tool. It was no help. I can visually achieve better collimation before switching to a star. Initially when I used it I was thinking “man I was further off than I thought”, but nope I was moving out of collimation with this tool.
Reviewed in the United States on November 19, 2022 by Adam T.

Can't find a product?

Find it on Amazon first, then paste the link below.