Celestron Collimation Eyepiece (1.25")

Celestron Collimation Eyepiece (1.25") - Allows the Realignment of Newtonian Telescope Mirrors

Celestron Collimation Eyepiece (1.25") - Allows the Realignment of Newtonian Telescope Mirrors

B&H # CEEPC MFR # 94182
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Celestron 94182 overview

  • 1Description

The optical performance of most Newtonian telescopes can be optimized by collimating, or realigning, the telescope's optics as needed.  This procedure's easily accomplished with Celestron's collimation tool, a handy accessory that comes with detailed instructions and is listed here.

UPC: 050234941822
In the Box
Celestron Collimation Eyepiece (1.25") - Allows the Realignment of Newtonian Telescope Mirrors
  • 1-Year Warranty
  • Table of Contents
    • 1Description

    Celestron 94182 specs

    Packaging Inforutdttdxafsebq
    Package Weight 0.435 lb
    Box Dimensions (LxWxH) 8.3 x 2.15 x 1.95"

    Celestron 94182 reviews

    Collimation Eyepiece (1.25") is rated 4.7 out of 5 by 33.
    Rated 5 out of 5 by from You really need one! This collimation eyepiece is a must have! It is very simple to use and does a better job than more expensive laser collimators. A laser can help line up your secondary with a primary, but unless you buy the super expensive barlowed laser, the final collimation just can't match the precision of this Cheshire sight tube combination. I have found it takes me only a couple of minutes to fine tune my fast Newtonian before each observing session. The sight of the cross hairs perfectly overlaying the primary's center dot, with the cheshire's donut of light around it gives me complete confidence that my alignment is correct. I might even pop it in for a quick confirmation if I am pointing the scope more at the horizon, for say, saggitarius, because the mirror may tilt due to gravity. It is an instant check that can prevent misalignment prior to a long exposure photograph. It is impossible to argue against and can save your entire imaging session. For the money, best accessory that will make an actual difference to the quality of your observations. It never needs batteries and it's a solid chunk of aluminum. Even your 5-year old can't break it. A must have for any fast reflector.
    Date published: 2010-07-12
    Rated 5 out of 5 by from A great tool. I bought this to collimate my home-made telescope, which made a significant difference. For the price it functions really well. I leave it in my eyepiece holder when not using the telescope, to help keep dust from getting in the optical tube, and for easy collumation checking everytime I use my telescope. This is one of those simple tools that works really well without the need for batteries or any other items. All you really need is a small source of light, whether it is a flashlight, ambiant light, etc. Initially, I collumated my telescope in my garage with the lights that were in the garage, just the ambiant light, no special setup. The second time around, when I was out in the darkness of night, I double checked the collumation just using my cellphone as a source of light, and that was plenty of light ot make the whole thing work. I would definitely buy this again. I think this works just as well as any laser collumator.
    Date published: 2014-09-21
    Rated 5 out of 5 by from A must have! This collimation eyepiece is inexpensive, simple to use and definitely worth the money. As a beginner astronomer, the rather daunting task of collimating my new telescope was made easy and it was done within a couple of minutes. If you're purchasing a Newtonian for the first time, I would recommend ordering this at the same time.
    Date published: 2010-10-29
    Rated 5 out of 5 by from Works very well collimating my f4.5 newt I use this product on my fast 10 newt, works VERY well and makes collimation very easy. B&H also has the best price on this item. My only complaint is that it's very long so it doesn't work very well as a sight tube for centering the secondary but I have another tool for that. Also works very well in the dark with a red flashlight, great for re-collimating while observing.
    Date published: 2012-01-22
    Rated 3 out of 5 by from Prompt Shipment. I am a beginning astrophotographer. I am not familiar with collimating lenses. This one arrived VERY fast and everything was intact. The item said new but there were marks where someone had used it (maybe in product testing). The instructions were hard to understand, and I still haven't wrapped my head around it all. But, that's probably a fault with me. Thank you for the fast delivery. Hope I can figure it out.
    Date published: 2012-08-15
    Rated 5 out of 5 by from Extremely Useful This is my first and only collimation eyepiece so I can not compare it to others, but I am very happy with its performance. The instructions may be a bit confusing if you don't already understand the collimation process, but there are many great how to articles and videos on the web that are extremely helpful. For the very cheap price of this product I am very pleased with its performance. The product was well packaged and quickly shipped by B&H.
    Date published: 2012-10-28
    Rated 2 out of 5 by from Not a snug fit B & H got the eyepiece to me quickly and a good price. However, I was expecting it to improve my ability to collimate my Orion 8 f3.9 Astrograph. Unfortunately, there is way too much play in the way the eyepiece fits in the focuser. It's imposible to tell if the eyepiece is centered or not (without some very precise mechanical measurements and adjustments).
    Date published: 2014-01-27
    Rated 4 out of 5 by from Simple to use, great results I needed a new collimating eyepiece for use with a new Ritchey-Cretien telescope and picked this one up based upon advice from other owners of the same type of telescope. The eyepiece is really easy to use and makes aligning the optics a breeze. It is solidly built and is not a cheap knockoff. That said, it is larger and heavier than I had imagined.
    Date published: 2011-11-22
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