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Technical Details
- 4 inch Maksutov-Cassegrain telescope
- StarBright XLT high transmission coatings
- Proven NexStar computer control technology
- Nearly 40,000 object database
- GPS-compatible with optional CN16 GPS Accessory
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Most Helpful Customer Reviews
20 of 20 people found the following review helpful:
3.0 out of 5 stars
Good, but too pricey,
By
This review is from: Celestron NexStar 4 SE Computerised Telescope (Electronics)
I used this scope for about 10 hours in total over two weeks before I returned it for a refund. This was my second scope, my first being a cheap 4 inch newtonian reflector. I decided to go for this scope to try some photography, as my first scope didn't have a tracking motor, and this one had a built in wedge offering both the simplicity of alt-az setup for obsevations, and polar alignment for photography. It also has a built in mirror to switch the light from the eye piece to an aditional camera adaptor at the back meaning you could quickly switch between the two.This scope was very good optically, and the views of jupiter were nice and sharp. I bought an extra 9mm eye piece, giving a magnification of 144 which was good for Jupiter, as the standard 25mm only gives 52x mag. From my light polluted back garden I could just about make out andromeda, and the orion nebula had a reasonable amount of detail. The goto feature was very good, and I found it placed objects within the view of the 9mm eyepiece, and I was able to find objects I hadn't found with my first scope. The 3 star alignment failed regularly, as I wasn't particularly accurate with my setup, setting my location to london (about 40 miles away) and using the small bubble level provided, however I found the 2 star auto align a breeze to use (in combination with the google sky maps android app to identify the stars). With an aditional camera adaptor, I was able to take pictures of the orion nebula, but I found you had to be careful when using the go-to with the camera attached, as there isn't enough space between the scope and the base for the telescope to point much past about 70 degrees upwards without the camera crashing into the base (I was unable to photograph Andromeda for this reason). The blacklash in the gears was significant, and this meant you had to apprach an object in the same direction as the tracking othewise it would shift about half way through the frame while the gears took up the backlash. I never actually used the wedge feature to polar align as I didn't have a remote release for my camera, so couldn't take exposures of more than 30 seconds. In alt-az mode I found about 3 in 4 pictures would have significant vertical star movement, but I'm sure in polar mode this would have been a lot better as the mount would only need to track in one direction. I also found the mirror shifted a lot when changing direction with the focuser, but this is expected with a low end telescope of this design. All in all, I enjoyed using this scope and it was a good learning experience, however I quickly started to crave more apature, and hence the reason I returned it for an upgrade. If I had taken it somewhere darker it may have kept me occupied for a while longer. I would suggest buying a cheaper scope without go-to, as the 40,000 object database is really wasted on a scope of this size and just not worth the extra money. Learn you way around the sky (maybe with the help of a good smartphone app or download stellarium to a laptop) as you will be able to see just as much, and then save up for something bigger.
93 of 96 people found the following review helpful:
5.0 out of 5 stars
Great telescope,
By
This review is from: Celestron NexStar 4 SE Computerised Telescope (Electronics)
Being a total newby in amateur astronomy I read extensively through various web sites and product reviews before deciding on the NexStar 4 SE.
The three deciding factors at the end were: quality of the instrument, portability and price. So far the telescope has not disappointed me. It is a beautiful instrument, excellent build quality and the computerized star finder is a great tool. If anything I would have liked Celestron to have included an additional eyepiece in the kit as standard. The included 25 mm eyepiece gives a 52 times magnification, which is excellent for viewing the moon, but too low to clearly resolve the planets. Being a 4" device, the magnification can realisticly go up to 240 times, so inlcuding a 12 mm eyepiece or a 2X Barlow lens would have made it a totally perfect experience out of the box.
12 of 13 people found the following review helpful:
5.0 out of 5 stars
good little scope for the price.,
By
This review is from: Celestron NexStar 4 SE Computerised Telescope (Electronics)
bought this telescope last month and so far it has performed well.once alligned it will take you to far away places from within its database,set up is fairly easy once you get used to the american way of inputing dates,there should be a way to change it to uk style as we input the day first then the month.inputing the time is standard 24 hour clock,and also entering your country and town or city,(not all at once but for example,england london).even after switch of you dont always have to input that bit.just the date and time,there are a few different ways to allign using,1 star 2star 3star polar eq north eq south or solar,since i am focusing on jupiter at the moment i align using that planet in the solar system align.noone ever mentions the rear camera part,at the back of the scope there is a threaded head to attach the T-ring adapter then the relative T-ring for your camera.canon in my case.the good thing is you can line up what you are looking at in the eypiece then at the flick of a switch you can see the object in the camera eypice or viewscreen,may need re focusing from eye to lense.power for some maybe an issue so a power tank is recommended,since i am only focusing on one object i use duracell rechargables at the moment till i can get a powertank,for the short time i am out with it and only looking at one thing,the batteries have lasted for at least 5 1hour to two hour sessions mainly just tracking,moving it about through other object will drain the batteries.
PROS. easy tripod for one person to carry and set up. the whole aligment process works once you have input all the correct data looks nice as well. price is good for what it does cons. could have come with one more eypiece and a standard barlow. a USB connection cable instead of RS-232 cable.
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