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Celestron X-Cel LX

Discussion in 'Eyepieces, Barlows, and Filters' started by Mak the Night, Jul 10, 2016.

Celestron X-Cel LX

Started by Mak the Night on Jul 10, 2016 at 11:06 AM

5 Replies 6393 Views 1 Likes

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  1. Mak the Night

    Mak the Night Well-Known Member

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    The Celestron X-Cel LX 7mm and 9mm 60° FOV eyepieces are relatively inexpensive for what they are. They feel well made and are ergonomically easy to handle in the dark and the cold. The treaded rubber grip is partly responsible for this. The image quality they give is sharp and bright, although I’ve only used these for lunar and planetary observing using magnifications between 200x, 250x and 257x. I could detect no ghosting, glaring or edge of field brightness.

    [​IMG]

    Similar in appeal to the TeleVue DeLite series but around a quarter of the cost. The X-Cel LX doesn’t quite have the Abbe orthoscopic-like high contrast views the DeLite has become renown for but it is still a very capable eyepiece. They respond well to being used in conjunction with a Barlow with no discernible vignetting that I could notice. Regardless of what Celestron claim on their homepage these X-Cel LX eyepieces actually have draw tube filter threads. These accept standard M28.5x0.6 filters (like Baader and GSO). The draw tube safety undercut is shallow and effective without causing any real problems on insertion or extraction into a diagonal or adaptor with a brass compression ring. The twist up eyecup is easy and pleasant to use and one of the only eyecups of its type I actually like. Celestron claim a 16mm eye relief for both eyepieces, which seems about right. The individual eyepieces themselves come with very useful plastic bolt cases.

    [​IMG]

    The 2x Barlow is equally as well made and features a compression ring. It is apochromatic and I’m pretty sure the Barlow element can be unscrewed. The Barlow also features a filter thread. Although I thought the set screw could have been a bit firmer in feel when tightened, it certainly works alright though and that’s just a personal view.

    [​IMG]

    I have observed Jupiter, Mars, Saturn and the Moon with these eyepieces and they do seem like they should cost far more than they usually retail at. Some believe the same optics are employed in the Meade Series 5000 HD-60, and there are a lot of similarities between the two series. It’s difficult to say for sure who the OEM is, or if they are exactly the same, especially as some of the focal lengths are different. The Celestron X-Cel LX eyepieces and Barlow I’ve used have really impressed me anyway. I wholeheartedly recommend them.
     
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  2. jgroub

    jgroub Well-Known Member

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    What you wrote jibes completely with everything I've ever read about these EPs. I have never used one or even seen one, but I read a lot, and nobody has EVER said a bad word against this line. I have no hesitation recommending them to newbs looking to upgrade from the Kellners or Plossls that come stock with their new scopes. When I do, I also recommend the slightly cheaper Agena Starguider/AstroTech Paradigms as well, as they are relatively similar at about ten bucks or so cheaper.
     
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  3. Mak the Night

    Mak the Night Well-Known Member

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    They've quite surprised me as well. I think Celestron are selling a lot of them to be honest. The Starguider/Paradigm series are Barsta in origin I believe.

    http://www.barsta.com/show_hdr.php?xname=MDA8V11&dname=OPFOR71&xpos=13

    I've not used one but I have a Barsta (Omegon) 2x Short Barlow which is very high quality, so I should imagine the eyepieces are also good.

    [​IMG]

    Mind you, I still rate my 10mm Celestron Luminos, but they have a reputation for glaring or edge of field brightness. Which is true to an extent. I really can't fault the X-Cel LX series though.
     
  4. jgroub

    jgroub Well-Known Member

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    What do you mean, you still rate your Luminos? Does that mean you like it? (Sorry for being dense about the word "rate".)

    I have that same 10mm Luminos (I actually have a glut of EPs at or close to the 10mm mark) and I don't ever use it. I don't really care for the 82-degree views, and I'm one of those who have noticed the EOFB. It's weird, though: it's there if you look for it, but goes away when you actually look at it.
     
  5. Mak the Night

    Mak the Night Well-Known Member

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    Sorry, 'rate' may be a British colloquialism. It means I still think it is good, even though Celestron apparently are discontinuing them. The Luminos are beautifully made though. I used mine as a high magnification EP on planetary subjects as the 82° FOV was easier to keep the target in frame on an undriven mount. The EOFB wasn't a problem for me, but it is noticeable. I too have a lot of EP's of 10mm or so, including a 10mm Delos and a 10mm Baader Eudiascopic.
     
  6. Mak the Night

    Mak the Night Well-Known Member

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    Addendum:

    I have had to return three 7mm Celestron X-Cel LX eyepieces to the retailer I purchased them off. All of them had noticeable debris spots when viewing through the eye lens. At first I thought these could be rocket blown or brushed off the eye or field lens. I'm certain they are internal, possibly contamination from some sort of flocking or baffling. Furthermore, after a little research I have discovered that there have been similar reports of this visible debris on 7mm X-Cel EP's going back some two years or so. The 9mm X-Cel I have is fine. This was a bit disappointing as I really liked the 7mm X-Cel.

    7mm TeleVue DeLite.jpg

    Luckily the 7mm TeleVue Delites are on sale.
     

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