Celestron NexStar 4SE Computerized Telescope – 4-Inch Maksutov-Cassegrain Optical Tube – Fully Automated GoTo Mount with SkyAlign – Ideal for Beginners and Advanced Users – 40,000+ Object Database

Excellent telescope fantastic technology.

I've owned a 10" dob (Coulter 10" f/4.5) and an ETX-90 (the original non-computerized model). This scope is my re-entry into amateur astronomy after being away for a few years. I live right smack in the middle of a heavily light polluted metropolitan area (Toronto), and it would take at least two hours to get to a genuinely dark site. So I wound up looking for a small scope that would give me good views of solar system objects.I've been pleasantly surprised. There have been only two nights since I got thing that the sky hasn't been completely socked in by clouds, and the moon has been down for both of them. So I haven't gotten the scope on the moon yet, but Jupiter has been beautifully placed, and it looks fantastic! I get a ton more detail off the planetary disc than I ever got from either previous instrument, and it compares favourably with views I've had through an assortment of friends' scopes. (I used the supplied 25mm Plössl, and a 7mm Nagler.)It's light enough that I can grab it and take it out to the end of the driveway for a quick look at the moon or a planet. I just wish that it either got decent battery life on internal power, or could slew around in altaz mode with the power off. I added a Power Tank after reading reviews of the scope's internal battery life. The tank is awkward enough to compromise the scope's ease of deployment, but I suppose I can throw it in a backpack. I'll definitely want to invest in an adjustable chair; the eyepiece wound up at a very awkward height when Jupiter was up near the zenith. For objects closer to the horizon, the height of the tripod makes the eyepiece position much less bad.Pros:* Really sharp optics* Light weight* Low price, especially compared to what computer-controlled SCTs sold for when I owned my previous scope* Star Pointer instead of a crappy 5x24 finder* Some attempt at including a built-in wedgeCons:* Azimuth locks up when power turned off, which prevents you from using it in altazimuth mode with the drive switched off* Really needs a Power Tank for use, which degrades the value of the scope's light weight* Built-in wedge is very rudimentary* Won't take a 2" diagonal for wide-angle views without vignettingThe NexStar 6 gets all the attention, and for 36% more light gathering area for 18% more money, it's a great value. But at 45 pounds vs. the 28 of the NexStar 5, it's 50% heavier for that extra 36% light, more if you add a wedge. The 5 is a big small instrument; I scaled up to it after looking at the computerized ETX-90. The 6 is a small primary instrument; I can imagine scaling down to one after looking at an 8" SCT. For shallow-sky observing in the light-polluted city, and for an instrument that I can carry a long way from my car in one trip with the tripod, single-arm fork, and tube mated up, I think this is a winner.

THIS REVIEW IS FOR THE NEXSTAR 4SE: I don't normally write reviews for most products but since buying a telescope can be trickey I thought I should help others with this process. First of all if you buy this product you will need to buy a 12v power adapter since the only other option is using AA batteries. If you choose to use batteries you will run into several problems. First of all is the fact that the telescope will run through batteries quickly. I really don't even know why they made batteries an option. Second, batteries do not function well during the cold months. Lastly, batteries do not provide sufficient power for this product to function properly. Now that I have discussed power let me tell you about the scope. This telescope comes with a 25mm lens which is fine but you will want more lenses to enhance your experience. I started by getting a Barlow lens (celestron X-cel Barlow). This is a great Barlow for the money and only has slight dimming. My next purchase will be a X-cel 12mm lens. Back to the telescope. The telescope is very easy to set up and provides great views of Jupiter, the moon, Saturn and deep sky objects. It is easy to focus and lived up to all my expectations. I looked at the nexstar 5 but by the time you buy the accessories you need you will be in the $1000 range. I have never viewed through the Nexstar 5 but based on the reviews I would assume that there is not a significant difference unless you are willing to shell out the $$ for something like the nexstar 6 or 8. The tripod that comes with this telescope is heavy duty and stable. The go to features of this telescope are what makes viewing a pleasure and so easy. You will want to make sure and read the Manuel and watch videos on YouTube to learn how the controller works. Once you have learned how to operate the controller you are well on your way to viewing the night sky. For me this telescope has been life changing because I have always wanted a telescope and just never committed to spending the money. I can tell you that it is money well spent because I have spent a lot of quality time viewing with my son and my friends. You can easily transport this scope wherever you go (outdoors) to make any occasion more interesting. I often find that many people have not viewed the planets through a quality scope and they really appreciate the opportunity it provides. So there it is. I highly reccomend this product. I am including some photos of the moon I took through the lens with my iPhone. I am giving 5 stars because of the quality of the telescope. I can overlook the battery issues due to the bottom line fact that I was impressed with the views of the night sky.