Customer Reviews

Meade 497 Autostar Computer Controller for ETX Telescopes

5 star:		(7)
4 star:		(4)
3 star:		(1)
2 star:		(1)
1 star:		(0)

 

 

We purchased the ETX 125 and we found the Autostar to be necessary.

It was very easy to plug into the telescope and turn on, but getting the telescope aligned was another story. The first night we went out with just the Autostar and the telescope, assuming that we would have enough to get started. We were very wrong.

In order to align the telescope and get the Autostar working, the unit first asked us to find true north. Yikes! We gave it a rough guess. We were off compleetely, we would find out the next evening. Next was the exact time, which we also guessed on our inaccurate watches. Then we picked the nearest city, which is about 30 minutes away. Then the unit asked us to find two stars in the sky and identify and align them in the telescopeÕs eyepiece. The stars that the Autostar gave us to find were not exactly well-known stars, and they werenÕt in a part of the sky that was devoid of other bright stars. Without a map of the sky, we were lost. Pollox, Rigel, Castor were some of the stars we have come to know well through the Autostar. Needless to say, we did not get the Autostar working that night.

The next night, we went out equipped with not only the scope and the Autostar unit, but also a compass (to find north), a detailed map of the sky (to find the stars it was asking us to), and a watch that had accurate time on it. Before we headed out, we took the time to enter in our exact latitude and longitude into the Autostar. That night was a great success. After a short time spent aligning our two base stars in the scope, we were off to explore the universe and beyond. We saw Saturn, Venus, Jupiter, the Pleiades, the Orion Nebula and several Messier objects that evening.

I highly recommend the Autostar, but wish that the booklet would have warned us that we needed to be prepared with the compass, star map, latitude/longitude, and exact time to make our experience with it successful. The only drawback to the unit was that it needs to be aligned and reset every time it is used, but itÕs not like there are other competing units to use. ItÕs well worth the money, and enhances the experience with any Meade scope.

This controller really became valuable to me after the first 3 or 4 viewing sessions with my new ETX-90EC. After the newness of just pointing the telescope at the brightest object in the sky wore off, the controller assisted me with finding all kinds of new objects to look at. It took some work for me to get the telescope aligned with the controller. I had to learn the reference stars that the controller uses to align the telescope. Once I learned the reference stars, the unit becomes essential for me to really enjoy this hobby. I cannot imagine using my telescope without this controller!

The AstroStar is a great ETX accessory. My favorite feature is its "give me a tour of what's good tonight." It is also great for figuring out what your looking at with its "identify this" feature. The only drawback is you have to be really careful aligning the scope initially to get it to work. The instructions weren't that clear between the scope, the tripod, and the Astrostar book. My recommendations to you, remember to align the scope to true north (i hold a compass on the lens tube), use a bubble level to level the tube, set your watch to the second on the nights you go out, and make sure the viewfinder and scope are well aligned. Do these four things and I guarantee you'll have a great night of viewing.

This is a handy accessory. Had I bought it at the list price, I would have been a bit disappointed. This is an example of how things are not as simple as you read. That can be a good thing. You DO have to know the sky to use this and the scope together! Also the setup requires knowing true compass direction, the bright stars overhead, and it helps to have a GPS or at least a good guess at your lat. and long.. I have a Star Atlas 2000.0, but do not have all the names of the stars requested by the Autostar during setup. I recommend picking the 2-star mode (NOT the EASY mode) and select widely separated stars that 1) you can recognize and 2) are near the area you want to view... This about doubles the accuracy. Lastly 3) center the alignment stars in THE SCOPE not just in the view finder. This is VERY IMPORTANT in the higher power ETX125. Overall, it is great how it will maintain a track in the level alt.azamath mode. That alone is worth the [price].

The Autostar is so decadent! I almost feel guilty for using it. But it is so easy to use and enhances the ETX-90EC scope so much that I use it all the time.

Set-up and locating the reference stars is fairly easy, and it is so much fun to take the tour of the sky. I've used this several times in an educational setting and it is fantastic for quickly pointing out stars and other celestial objects. In addition, it expands on the standard controller, giving you nine variable speeds instead of the standard four.

Once you use the Autostar you will never go back.

There are two schools of thought on the use of go-to telescopes. One school believing that it takes away all the skill and fun from astronomy. however, I'm a believer in the other viewpoint. I think go-to capability opens up astronomy to the masses and brings the universe just that little bit closer to everyone. I purchased the Autostar for my ETX about a year ago and it has had extensive use. Out of the many many times I have used the autostar with the scope, I estimate it has performed as desired on 90% of my viewing nights. Unusually, I seem to be able to align my ETX rather easily depsite the fact that many people have difficulty. I think I have had luck on my side as the ETX, while a beautiful scope, can be a little temperamental. Even after doing a quick and rough alignment, like pointing it in the general direction of due North, without using a compass, I still get very accurate results with the autostar. I even changed locations the other day, moving from Auckland to Taupo, (some 3 hrs travel distance by car) and inadvertantly used the Auckland co-ordinates while viewing in Taupo. Suprisingly after alignment, I still got accurate positioning from the autostar. Once you get the hang of the menu system the autostar is really quite simple to navigate around. The amount of data is staggering, but given the size of the playground, it's not suprising. The unit itself is comfortable to hold and the adjustable brightness makes reading the screen simple in the dark. I havn't found the built in red light at the top of the unit very good as it is just too dim to make out charts etc. The trusty old torchlight with red nail polish on the lens is hard to beat on that score. I suggest that if you are operating from a tripod, you attach something to the back of your autostar that lets you hang it up on the tripod when you are not using it. Otherwise it can dangle around and get in the way. On a couple of occassions I have had the unit fail to operate correctly or reset itself. These have been far and few between, and readily fixed itself. Ultimately the Autostar is a computer so an occasional reset is not entirely unexpected. One minor problem I am experiencing at the moment is the scrolling text on the lower line of the display panel is tending to fade a little the faster it scrolls. This has occured since I started using a power adapter for the scope so this will need investigating. This however is only a minor niggle. If you have any concerns about your Autostar consult
the best resource on the net for the autostar, Mike Weasners site. The Autostar is highly recommended and really an essential purchase to go along with your ETX. Clear skies everyone and happy alignments.

I first grew acquainted with Autostar about 6 months ago (albeit the 494 model) on the ETX-70 AT, and had some accuracy issues the first few times I used it. They were easily fixed, though, with a good drive training (on a power pole about a mile and a half away) and careful motor calibration. That was in May, and except for when the batteries are low, I haven't really had problems since.

In late June, I moved up to the LXD-55 6 inch Shmidt-Newtonian (which uses the same 497 Autostar as the ETX line), and after one repair call for a motor problem it has easily met my expectations for visual work. While the short focus Newtonian may have a wider field of view and a much better sigting scope than the ETX's (as well as significantly more aperture for under $800), keep in mind that it must be POLAR aligned which is MUCH more difficult than an ETX Alt-Az procedure. I usually cheat and use Polaris instead of the true North Pole, but my accuracy is still predictibly within 30-45 arcminutes (1/2-3/4 of a degree or easily within the view of a 26mm eyepiece) on 90-95 percent of the slews with a rough setup.

Here's how to get the thing to work the way its supposed to on an ETX when you first get it. Do the first 6 in daylight to make the setup easier:
*Skip Time for now
*Enter Date (if you will observe that night) and nearest city
*Enter your observing site name and adjust your latitude and longitude (use topozone.com or a topomap to find your location to the nearest minute (60th of a degree)) for your site
*Train the drive using a distant (1 mile or more) object. Procedure is in manual. If done well you should not need to do it again for months
*calibrate motors
*turn off telescope
That night (or any night):
*set up and level telescope (use torpedo level and rotate tube to check level). This is only necessary if you know that your site is significantly (5 degrees or more) off or your tripod is set to less than maximum height
*Aim north at Polaris (the North Star). Do NOT use a compass-it is often as much as 14 degrees off from true north. Use the two stars at the end of the big dipper to aim at the first bright-ish star at the tail of the little dipper. Align finder scope if necessary her.
*level tube by bringing it straight down to horizontal
*start alignment (easy at first, two star when you know the sky better). push the down scroll button if the star is behind a tree or other barrier. center in the eyepiece, not just the sighting scope. Press enter. Repeat for other star (preferably far from the first one-the farther the better)
*Enjoy!

For the long term, get a star atlas or astronomy program and a range of good eyepieces/filters.

I deducted a star for the fact that Autostar displays thousands of objects nightly that are below the horizon and that the NGC and IC catalogs are nearly worthless unless you have a comprehensive atlas and know the catalog number of the object(s) you are looking for.

We just purchased the Meade 90 ETX telescope and decided to get the computer controller too - and man are we glad that we did. We're novices with the telescope, so finding specific objects in the night sky is a challenge.

With the autostart, after taking about 15 minutes to go through the alignment process, we can just tell the Autostar what we want to find and it moves the telescope to the object for us. Without this, the only thing we would probably look at in the sky is the moon.

NOTE: If you're not planning to use your telescope to look at objects in the night sky (i.e. planets, etc), then you don't need the Autostar.

"Goto" Telescopes and controllers have been around for quite a number of years now, but are normally very expensive. The Autostar has 95% of the functionality of the expensive hardware at a small fraction of their price.
I think that Meade has done an excellent job of making this device user-friendly. However, it's a powerful tool, and it will take some serious attention on your part to make it work to even a fraction of it's potential. One big advantage the Autostar has over the competitors "goto" controller is that fact that Meade is constantly updating and improving the firmware. Get the #505 cable, or make your own for a few bucks and you'll also be able to load in newly discovered comets or customized sky tours.

Although many novices will find it confusing, the Autostar can actually be easier to use than the more advanced and higher priced controllers used on much more expensive telescopes.

This was by far the best purchase of any astro equipment ever!
The Autostar is worth every penny and then some. Sure, it frustrated me at the beginning until I got it down to a T and it
s been GREAT since then. I added it to my Meade LXD-75 mount and it's accurately provides GOTO functionality for my 8'' 62'' long reflector telescope! Once I downloaded the latest firmware to the hand controller it has been flawless. Using the 3-star alignment feature every object I GOTO is centered in the field of view of the eyepiece at about 60X. Great stuff!