Customer Reviews

Celestron NexStar 8 SE Telescope

5 star:		(12)
4 star:		(4)
3 star:		(1)
2 star:		(3)
1 star:		(3)

 

 

The five stars represent my opinion about the scope. I'm a novice at astronomy, so I can't really make any comparisons. I can tell you, however, that this scope does everything I've ever read about it. I pulled it out of the box and put it together and it went to work just the way the book said. I've done some solar viewing and a little digital astrophotography. My major purpose for this scope is in the area of deep-sky astrophotography without spending multiple thousands of bucks. It may be a little overkill for a novice like myself, but I wanted a scope that I wouldn't outgrow, and one that is easy to accessorize. The only thing I can nit-pick on this scope is the motor drives on the mount. They work fine, but they make a little too much noise, and the sound indicates to me that the gear train is not high quality components. It does seem to run very smooth, though! And accurate, every time! If YOU take the time to accurately set it up and aim it, then IT will put what ever you ask for right in the middle of your field of view. The battery holder is a little tight on the 2000mah NiMH AA batteries that I bought for it, but since I plan to use the AC adapter I bought for it, that's not really a big problem. I wish Celestron had designed the bubble-level INTO the base of the mount rather than just leave it loose for the user to install with the double stick tape on it's bottom. I bought a larger level from an RV store and epoxied it to the top of the battery cover. It seems to be very accurate and my alignment seems to work every time. I recommend a good variety of eyepiece filters, a solar filter for the main aperture, a 45deg. upright diagonal, and several eyepieces to cover the range from about 4mm to 32mm. Zhumell and Celestron both offer good filter/eyepiece sets at very good prices here on Amazon. For the astrophotographer, there's a whole world of accessories to chose from for this scope, and this is where I learned just how bad Celestron's customer support is! A lot of accessories out there state they are compatible with the Celestron C8 and 8i scopes, but this 8SE is so new that it isn't mentioned very often. I was concerned about the differences in the three 8" scopes, so I submitted an inquiry to Celestron's customer support, asking for a description of the differences in the C8, 8i and the new 8SE scopes. After four days they closed my ticket without answering my questions, so I submitted another request. After 14 days there was no response. I called them and the fellow I talked to had to put me on hold three times for about ten minutes each while he went to ask someone for answers. Shouldn't they man the tech-support phones with people that know the differences in their own products? All I was asking is if the visual back from a C8 will fit the 8i and 8SE, and if the solar filters for a C8 will fit the 8SE. He didn't know! I just hope my scope doesn't break because their tech support is less than helpfull. [...]. Just don't expect Celestron to be there for you without a lot of prodding.
By the way, for anyone considering this scope, the best info I've found is that all of the eyepiece accessories that will fit the rear cell of the C8 will also fit the 8i and the newer 8SE. The Celestron tech had to go actually test fit a visual back from the C8 to an 8SE to find out! He did say that any filters for the main aperture (the big end where light enters) of the C8 will not fit the 8i or 8SE! There was a significant dimension change made there.
I hope this helps eliminate the frustration I had in selecting and buying any accessories that anyone buying this scope may have. Happy star-gazing!

I love astronomy and have to say this was my first real purchase of a telescope. I placed my order and in 2 days my product was at the door. I was shocked how fast it came. I was very excited about viewing the planets and hopefully some deep sky objects. Novice would be the best way to describe my viewing experience. However, I was able to get the scope setup and struggled with the star alignment. Then I used the CD that came with the product and got to know the night sky. Yes I know, read the material first then play but I was like a kid in a candy store and just couldn't wait to start viewing.

I did get the sky align to work and then tested the alignment by having it go to the easiest target in the sky. (The moon). Boom it was center view. In a full moon phase right now so the obvious light polution is tremendous but I was able to view Jupiter and see 3 moons (due to the light conditions it wasn't to detailed). Everything else was bleed out by the moon.

I read the reviews before I purchased and did alot of research on scopes and have to say this one hit the nail on the head. It does take 8 AA batteries to operate and I read someone elses review that the batteries do not last long, so I purchased the power pack along with it.

The power pack was a good idea however, take heed that it plugs into where the scope rotates and if you are not careful you can find that your power cable is getting wrapped around the scope as it rotates.

GPS - I was considering purchasing the GPS but decided that google earth will provide me the Long and Lat just as easy.

Leveling - the little bubble level they give you works fine but make sure you keep track of that little bugger cause it's very easy to loose. They give you some double sided tape which proves to by useless because it throws off the bubble. Don't bother with the tape and just place it on the mount to level it.

Accessory pack - I did purchase the Celestron 94304 Nine-Piece Accessory Kit and feel that was a wise purchase. You get the barlow scope, some filters and my son loves the "shakey flashlight" (what he calls it).

Motors - Yes the motors are just a tad noisy but not that bad. It lets you know that it's working :). It tracks very well.

Mounting your scope: Do not make the same mistake I made and just slide it into it's mount and not pay attention to the vertical alignment. Make sure you mount it far enough in so that your scope can go vertical without it hitting the angle lens and preventing it from hitting it's target.

Finder Scope: Very nice- and once aligned works great. I love the red dot LED. It's nice to be able to adjust it's brightness so that it doesn't bleed out what you are trying to target.

Over all. If you are just starting out in astronomy and love to view the night sky. If you ever sat outside at night and wished you owned a telescope because it was a great night to view some planets and deep sky objects. If you were afraid of a telescope because your night sky knowledge was limited. This is the scope for you. I can't say enough good things about it. Not only does it find the stars and planets for me it is also teaching me as it goes.

I've used this telescope since June 2009. The NexStar 8 SE provides pretty good views, but the computerized mount is literally a piece of junk. I'll tell you why.

Problems with the mount:

1. Battery compartment: Lots of space taken up for batteries, but batteries only work for a few minutes. This thing eats batteries, and doesn't come with a power cord! Further, the battery compartment design is poor, with two battery holders dangling by their wires. The battery holders must be placed a certain way after batteries are installed into them. There's only one way to place the battery holders and still be able to close the compartment cover, but there are a few ways to place the battery holders incorrectly. If you want to be able to close the battery compartment, you'll probably have to look up the instructions on the internet. You'll need to by the optional AC power cord (which is what I did since I'm always observing within an extension cord's length of an electrical outlet), or the 12V cord along with a 12V battery in order to use this scope.

2. Noise: I know everything seems louder at night... in the dark... when you're supposed to be quiet. But slewing at moderate to fast speed with this thing is like a freight train coming down the tracks. It's not a problem if you're not near anyone, but the many times I've been in my backyard or up at the lake with this scope, I've worried about disturbing neighbors.

3. No clutch in azimuth: This means you can't move the mount in a sideways direction without using the power-hungry, fantastically noisy motor. You can move the mount in altitude manually, but not in azimuth. Truly a bummer.

4. Spur gears: There's a lot of slop in the gears, so when you begin to slew the scope it often doesn't actually begin to move for a short period of time. No big deal, but it's annoying.

5. Time isn't saved: As others have mentioned, having to enter the time each time you turn on the mount is just ridiculous.

6. Cheap hand controller: The screen on my hand controller came loose and tilted within a couple of weeks of use. LCD screen doesn't work well in cold weather. I know this is a common problem with these types of controllers, but cold weather is a common condition for astronomical observing. Celestron and all other manufacturers really should take this into account and install a heating element in the controller. (I know all the workarounds - use handwarmers, put the controller in your jacket, attach your own heating element, etc. - but they're just not convenient.) There's obviously no intention of minimizing power consumption with this mount, so adding a heating element wouldn't be a big deal.

7. Built-in bubble level: There isn't one.

8. Defective (at least mine is): I'm in the process of sending my mount to Celestron for warranty repairs because it no longer slews properly at slew speeds slower than 8 or 9 during alignment. So, at a slew speed of 5 which is the default for alignment, the mount doesn't move at all. It's too bad I have to pay for sending it in, when I'd really rather just get a better mount.

Problems with the tube:

1. Focus knob: The focus knob shakes and moves the mirror way too much. If I didn't know better I'd think it was a defect. But I know better. It's not considered a defect. It's just a bad design that amateur astronomers apparently don't mind too much.

2. Accessory mounting holes: Ideally, you'd have a red-dot finder and 9x50 finderscope mounted to the top of the tube. You can't do that with this scope unless you're willing to get out your drill. There are mounting holes at approximately the 2 o'clock position and 4 o'clock position, so most people will probably use those using the topmost holes for the red-dot finder and the lower ones for the magnified finderscope. There should be another set of holes on the top of the tube somewhere between 10 and 2 for the purpose of mounting accessories.

There are a few things I like about the scope:

1. Portable: Compared to my 10" dob, the 8 SE is quite portable, and this is the primary reason I bought it. I've been able to take it to the lake (where the sky is much darker) on many occasions.

2. Tracking: Once aligned the mount tracks pretty well. I've left the scope tracking for over an hour, to find that the object of interest was still in the field of view when I returned.

For me, the bottom line is that the NexStar 8 SE has too many problems, and shouldn't be considered by anyone new to astronomy. Considering the design quality, the 8 SE is overpriced. You can get a bigger and better telescope for less than half the price if you're willing to give up the computerized object locator and the tracking ability that's inherent in such a mount. Trust me. If you're a beginner in reasonably dark skies (meaning you can actually see and locate stars with just your eyes) then a computerized mount like this one will frustrate you far more than it will help you.

In brief I was thoroughly satisfied with the quality of the telescope. I havent yet used it much, but in about 2 weeks or so that I have owned the telescope, I have used it each night irrespective of the seeing conditions.
I will divide the entire review into two parts, likes and dislike/want.

Things that I dislike or would want.
Power consumption is really high... I learnt that the very first night. I had to terminate my viewing session in about two hours. I was using brand new Duracell AA battries with a lot of moving. I would have really like if Celestron was a little more direct about the fact that power comsumption is really high, but then again I could have missed it! I would really recommend buying the power tank.
Levelling the telescope is really important and Celestron has even provided with a bubble level. I would have really liked if the bubble was built into the mount.

Things that I like...
In one word... everything else. The optics are really good and I get clear crisp images. The GoTo system, called SkyAlign here, is easy enough to use. I had a little trouble getting it up and running but found a good thread on Cloudynights by MarvinTheMartian and followed everything there to get a really good alignment.

First light Report:
Saw Jupiter with the four moons and it was spectacular. I could even see the clouds of Jupiter. Moon is probably the best target to view, however dont make the mistake I made, see moon on a full moon night without any filter! Its just too bright!
I see from suburban areas, and have a lot of light pollution. Even with all that I was able to see some of the deep sky objects. I have seen M31 and am hoping for some more time and some clear skies to continue viewing.

Portability: Though people may say this is portable, I would not necessarily agree with them. Its not as portable as I would call portable. If you are like me, carrying it around like me, I would recommend buying a carrying case at least for the OTA.

Final Verdict: If money is not the concern, go ahead and buy this telescope. I really loved everything about this telescope and the dislikes are trivial (and hence the 5 star rating). Big aperture will keep me occupied for quiet some time before I move to my next, a 14"!

I recently upgraded to the Celestron Nexstar 8 SE. I had the Nexstar 4 GT before it. I have to say that the Nexstar line has come a long way in 4 years. The hand controller now has a larger database of objects that the scope will go to, and more alignment methods have been added. With SkyAlign, you can have the scope aligned in no time. I also like the fact that the hand controller and motor controllers are firmware upgradable now. This scope's go-to capabilities are fantastic. Once I used SkyAlign to set it up, I was finding nebulas and galaxies that I had never seen before. 8 "AA" batteries do not last long in this scope, so if you plan to use it for hours at a time, I would suggest that you purchase the AC Adapter, Car Adapter, or Power Tank to go with it. Anyway, the Nexstar 8 SE is a super scope. I love it!

I have a professional degree in astronomy before turning to medicine. I also have over 40 years of observing experience. This is a wonderful off-the-shelf telescope for the amateur observer who is mainly interested in visual observing. Optical and mechanical quality and image stability are excellent. I use a digital camera with it for planetary and lunar work, but I don't do deep-sky photography. This type of alt-azimuth drive/mount is not really designed for serious deep-sky photography, but it is terrific for visual observing. My only complaint is that it does not have an onboard memory clock, so the time, date, and location must be re-entered with each use. That is a crazy software design. The other complaint is that the unit I have does not know about the change in daylight savings time dates that was made last year. It is a small hassle, but a hassle nonetheless.

When I opened the package I was surprised the quality of the product. I went right away to test it in my first night. Due to Florida's terrible rainy days lately it was mostly cloudy yet I was able to see Mars, Saturn's rings, Jupiter's moon and clouds, even behind a tinted glass! That's how high quality these optics are. Able to gather celestial light even with such terrible viewing conditions.

The eyepiece that came with it(25mm)is of very good quality itself, I bought a an eyepiece set but I still find myself using it a lot. The tracking does drain batteries fast so I had no choice than to upgrade to an AC power supply. Due to high humidity, dew was a problem on the optics, had to buy a dew shield.


To summarize, every penny spent on it was well worth it. This really isn't an entry level telescope so it does cost a lot but it also shows on the quality and what you can see through it.

I definitely recommend buying this telescope if you are serious about astronomy or want a real good telescope.
It's no wonder this is the most popular telescope these days.

~Leonel & Lennier



11/18/2010
Just an update on the reliability of this product (mount/optics) for anyone interested on its longevity. After 2 years of use it still works as great as the first time. No fail electronics or jammed magnifier. Works perfectly; thus in our opinion it was a great investment.

While the Celestron 8SE is an easy telescope to set up, and moderately easy to use the company customer service leaves much to be desired. The scope I received lasted 3 days before the hand controller failed. After never receiving any email responses to web requests for customer service I called. they agreed that the hand controller failed (I saw many discussions of this on the web). They wanted me to send it in as well as the rest of the mount. I paid more than $100 to overnight the unit to Celestron and after 5 days of silence I called and they said it was their policy to have a 30 day repair time for warranty. Several email queries to status havegone unanswered.

The customer service and turnaround times for repairs under warranty are excessive and the company has no sense of urgency that you spent thousands and are sitting with a useless piece of equipment after 1 week of use.

I am a casual backyard observer in an area of heavy light pollution (close in suburb) and I looked at a number of smaller and more primitive Go-To scopes before buying the 8SE. I also have a C-5, but found it is just not up to letting me find fainter objects in our dark gray sky. The manual contains many suggestions for improving Go-To accuracy and I am still working through them. But with the mount level, the location set to a city 10 miles away and the time set to with in a minute, the Sky align method works very well with a 25mm eyepiece. Even one star and two star alignments are close. Precision Go-To works very well. If your observing takes you back and forth across a wide area of sky, you can improve Go-To by replacing one of the alignment stars with whatever star or planet you are viewing now. Having a level scope is critical. The bubble level was lost in the unpacking so I use a 2' level or a line level and rotate the scope more than 180 degrees to check level in all directions.

Once an object is centered, tracking is excellent. Saturn stayed in view with a 10mm eyepiece for about 50 minutes with no adjustments; at that point I changed to a different target.

Optically the 8SE is very good. It easily splits some of the closer double stars. Collimation while not perfect is very good; so good that I continue to postpone adjusting it. At the 8SE's price point there are compromises; there is play in the drive and the tripod could be just a bit better. The focus mechanism is jumpy. The red dot finder is a pain to use with higher targets. I will replace it with a right angle finder or a laser finder.

Imperfect as the Go-To system is in some ways, it does not require a complex setup, and most important, allows me to quickly find objects eluded me using guess and point with my C-5.

I use an AC adapter with a 5.5mm x 2.1 plug rather than batteries. If the power connection is loose, gently spread the center pin in the power jack on the mount. Also check to ensure that you are using a x 2.1mm plug rather than the more common x 2.2mm.

I received this telescope as a gift for Christmas. My husband did much research and purchased the telescope as well as ac/dc and portable power supply.

I was very fortunate that he purchased those external sources of power as the power source using the batteries is faulty. Loaded up 8 brand new batteries and turned on the scope: NOTHING. Thought perhaps they were loaded wrong, removed them and reinserted the batteries. Still nothing. Tried another set of brand new batteries. Still NOTHING.

I have been able to use the scope, it works well on external power, however if the power supply comes loose for even a second, I have to re-align the scope because the battery power supply seem disconnected from the scope. I have tried to call Celestron however, they are on vacation until 1/4/2009. Wonderful. I really don't want to send the scope back for this (which they would cover under warranty I am sure--except they won't pay for shipping).

Very disappointed with this as the scope was pricy.




E-mailed Celestron and received reply after everyone returned from vacation. I will have to return the base to the to have it evaluated.