|
|
|
|
|
|
HomeSporting GoodsApparelHunting OpticsBinocularsBushnell NorthStar 900x114mm Motorized "Go To" Reflector Telescope |
|
|  | | | Customer Reviews: | | | Average Customer Review: ( 3 customer reviews )
Write an online review and share your thoughts with other customers.
Most Helpful Customer Reviews
23 of 23 found the following review helpful:
 Everything bad you've read is true... Oct 04, 2006
By A. Murray
I've got the 3 inch version of this telescope, but the comments apply here as well (so I figured I'd save someone some trouble by posting here, too):
Everything bad you've read in the other reviews is all 100% true. From the lack of tracking, poor go-to (because it doesn't keep the time after you've set it), to the way over exaggerated magnification claims, shaky mount-- all true.
I've had one of these scopes for about 4-5 years (got it as a gift). I used it once or twice but couldn't do anything but look at the moon with it. It went in the attic (where most cheap scopes end up) after a short time...
Then I gave it to my sister (she kept it when I moved-- I was going to throw it away). She gave it back after about a year because she couldn't get it to focus. Only useful for the moon she says (couldn't get the computer to work at all-- her fault there-- read on).
Since that time, however, I learned a lot about telescopes in general. So when I got it back, I figured out why it wouldn't focus with the included 4mm eyepiece or the supplied 3x barlow. It was WAY out of collimation. Collimation wasn't even mentioned in the manual at all. They assume it is always in collimation. If a scope gets out of collimation it is useless so it is strange not to put it in the manual at all.
So I take out the primary mirror and mark the center spot with a red sharpie (you need to mark the center of the primary mirror for collimation-- this one doesn't come pre-marked). I put it back in and use a cheshire eyepiece (used for collimation) to line up the optics. Now I knew why there were no instructions on collimating. This thing is almost impossible to collimate! The secondary mirror basically falls out when you loosen any ONE of the set screws! Anyway after about an hour and fifteen minutes I got it in very good collimation.
However, even in good collimation, the 4mm eyepiece will not come into a sharp focus and NOTHING in the 3x barlow will come to focus AT ALL. This is definitely due to very, very poor quality of the supplied eyepieces. I've tried other eyepieces which make this scope perform much better so I know it is the eyepieces. The 3x barlow is 100% useless and it is also 100% plastic (I think it even has a plastic lens). The *only* reason the barlow is in the box is so they can advertise 525x magnification (700mm/4mm * 3 for the barlow = 525x). But the useful magnification for any scope maxes out around 60x the aperture (in inches). In this scope's case that is 180x.
The computer works like it is supposed to (except it doesn't keep the time once you enter it which makes it pretty useless). The problem with the computer and "go-to" in general is the user has to know a bit about the sky before it is useful because you have to line up the scope manually on two stars to set the computer. The novice probably can't do this properly. Note, too, that the second star must be found fairly quickly after the first or the settings won't be very accurate (hard, again, for the novice). The most useful part of the computer is using the direction arrows to manually keep an object in view since they slew the scope at a fairly slow rate.
So, the user should know a bit about the night sky before attempting to ever use ANY go-to system.
First of all, the best way to do that is to buy NightWatch: A Practical Guide to Viewing the Universe (Spiralbound) by Terence Dickinson. That'll get you oriented in the night sky and give a good starting point.
Second, pick up a good starter scope. A good starter Newtonian (same style as this scope) with an object locator (doesn't automatically move the telescope, though) is an Orion SkyQuest XT6. It has twice the aperture of this scope. If you get the XT6 without the intelliscope option it is even cheaper. General rule is buy the bigest aperture scope that your budget allows.
Personally, I don't think you need a go-to at first. It is much more fun to be able to read start charts and star hop your way to find those deep sky objects. Very much like the difference between watching a movie vs. reading the book.
9 of 9 found the following review helpful:
 Telescope Shortcomings Sep 19, 2005
By Mountain Man
The telescope is dissappointing. It is difficult to focus and the magnification is much less than I anticipated. I have yet to be able to use the extension eyepiece.
1 of 2 found the following review helpful:
mislead Jan 24, 2011
By jacob
i received this telescope in what appeared to be in pretty condition. little did i know, the eyepiece i was supposed to view the sky with was damaged and i am unable to get repair parts for it. thanks for nothing.
|
| | |
|
|
|
|
|
