Celestron Collimation Eyepiece 1.25"
by Celestron
|
List Price: Our Price: $39.75 You Save: $8.24 (17%) Availability: Usually ships in 1-2 business days Category: Digital Camera See more product details |
|---|
Customers in the UK,
Buy this product at amazon.co.uk
for British Pounds
Digital Cameras Photo Reviews of Celestron Collimation Eyepiece 1.25"
Customer Review: Must have for fast Newtonians
Summary: 4 Stars
You will need this or a laser collimater for any fast (f8 or faster) Newts. If they aren't perfectly collimated, they lose a lot of their capability.Customer Review: Okay Collimator...
Summary: 3 Stars
This collimator is pretty fair, but I later ordered the laser collimator, and discovered that my main mirror was a little bit off. If you're on a tight budget, like I was, this will do a good enough job. Otherwise, get the laser! :)Customer Review: Was not able to collimate my telescope with it
Summary: 1 Stars
Using the included instructions, I was not able to achieve a satisfactory collimation of my Orion XT-12i Dobsonian telescope (it made it much worse in fact). I also tried using a bunch of different online guides and was never able to collimate successfully using those either. I was attempting to collimate both the secondary (which I had foolishly messed with) and the primary.
One of the problems that I ran into is that the pictures in the manual and guides never matched up with what I actually saw looking through the collimator. My best guess is that the drawings were idealized, and my collimation was screwed up enough, or my telescope different somehow, so that I was not to be able to figure out which parts were real and which idealized, leading to a lot of frustration and dead-ends. Also, the tool wobbled around in the eyepiece, even after buying a special Orion centering adapter that was supposed to prevent it. So I could change the "collimation" based on how I inserted the tool, or even based on how I changed the focus settings (which people claimed shouldn't be happening, but I thing this might be due to having an offset telescope? Just guessing).
I eventually gave up and re-collimated using the Orion collimation cap that came with the scope. It's not perfect either, but it is much better now than this tool was ever able to do, and at least I was able to get back to where I was before I fooled with my secondary. I feel that this collimator was a waste of money.