#18 in Telescope & microscope accessories
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Reddit mentions of Celestron Collimation Eyepiece 1.25"
Sentiment score: 5
Reddit mentions: 7
We found 7 Reddit mentions of Celestron Collimation Eyepiece 1.25". Here are the top ones.
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Celestron Collimation Eyepiece - 1-1/4'' - 94182Ideal for precise collimation of NewtoniansSpecial eyepiece fits into 1¼" focusers or diagonals.Alignment is easyCollimation eyepiece is more accurate than the simple Collimation Tool
Specs:
Height | 2 inches |
Length | 2 inches |
Number of items | 1 |
Release date | May 2015 |
Weight | 0.3 Pounds |
Width | 2 inches |
I actually got this one. https://www.amazon.com/gp/aw/d/B00009R7RJ/ref=mp_s_a_1_fkmr1_1?ie=UTF8&qid=1482765519&sr=8-1-fkmr1&pi=AC_SX236_SY340_FMwebp_QL65&keywords=celestron+130+collimation. Very simple to use and comes with instructions.
He's right, I too own one. I struggled with this for a while before I realized what the problem is. If you feel like messing with it for hours you can get it close. That scope isn't really powerful enough that your going to notice if it's a little off anyway. That being said. It's a great beginner scope. Buy the RA drive for it and it can provide fun viewing of the planets and SOME dso's just get used to squinting and asking yourself, is that what I think it is?! Eventually I upgraded to a XT8 and now really know the difference between Bird Jones 1000mm Focal length and true 1200mm focal length.
Celestron R/A Single Axis Motor Drive for the AstroMaster Telescope https://www.amazon.com/dp/B00039R23G/ref=cm_sw_r_cp_api_Gvs3xbDQXJDN1
Celestron Collimation Eyepiece 1.25" https://www.amazon.com/dp/B00009R7RJ/ref=cm_sw_r_cp_api_xws3xb7FXWMSM
(Edit: Links)
EDIT: What kind of scope do you have? I ask because the advice below only applies to Newtonian reflectors; collimation is a different procedure for refractors and Cassegrain telescopes.
While a collimation cap is a very cost-effective tool, I would highly recommend a cheshire collimating eyepiece (AgenaAstro, Amazon) if you can afford one. It works the same way as a collimation cap, but it also has thin wire crosshairs. These allow you to align the optics to a much higher degree of accuracy, or at least make it much easier to do so.
I find that an affordable laser is more trouble than it's worth (you have to collimate them before you can collimate your scope!), and reliable lasers are way too expensive (start at $120). I got a cheshire and it works great; it really is the quintessential collimation tool.
So with refractors, the lens are firmly mounted in place and should never move.
With a reflector, if you did the same thing the mirrors will break, so if you take a bumpy trip out to a dark site you you knock your telescope the wrong way, you need to collimate it.
Most of the time, the secondary mirror never needs to be collimated, but sometimes it does.
There are 2 things you can buy, a Cheshire eyepiece or a laser collimator. I personally prefer the latter due to ease of use, among other things.
Cheshire eyepiece
laser collimator
Thanks for the tip. I just bought this Collimation Eyepiece and will give that a try.
Glad to hear there is someone in the same boat as me! I will end up getting an additional eyepiece, but I would think that the one that comes with it would do way more than what I saw!
I'll take another look at the website when I have it here with me and just see what I can tell by just eyeballing it. Perhaps it is off far enough that I will be able to tell just by looking at it. Then I can fix it when the Collimation Eyepiece gets in.
See the pattern?
Edit:
Ok more info. Your telescope is a reflector just like mine. There are two mirrors, one at each end of the tube. Your eyepiece has to be lined up correctly with the front mirror, and the front mirror and back mirror have to be lined up properly. The collimator (Celstron calls it the collimation eyepiece) helps you to line up these optics. Without doing this first your experience is going to be like mine was, very disappointing. Unless you're incredibly lucky most everything will be blurry, or smeared to some degree. Once you have collimated the scope properly everything becomes much much sharper. The effect is kind of like shining a flashlight on a wall. If the flashlight is lined up properly the light is sharp and round, if the flashlight is at an angle to the wall the light becomes distorted, stretched out and oval shaped. This is similar to what I experienced with my scope. It's well worth the extra 30 bucks.
Get yourself a set of eyepieces of various sizes. Celestron has a decent entry level one for about 130 bucks I think. This will allow you to really get the best use of your scope once it's collimated.
Have fun!
Edit 2: Here is the collimation eyepiece and here is the eyepiece kit