Source: Tom's Guide US | Keywords: celestron, telescope | Themes: Digital Cameras, Digital Entertainment
11. Alignment and Testing
At the factory, Celestron begins calibration by downloading the complete ROM. Then they pre-cool the SkyScouts in an icebox to -5º C. The SkyScout is then loaded into a wooden box that has two sets of two giant coils around the outside, like two tori in both the X and Y planes. Connected to the box are two short, wide flexible hoses that run from the freezer to the box and back. Fans blow cold air from these modified freezers to the SkyScout calibration box. The coils change the magnetic field, and the connected computer sends offsets for each “position” or scan angle to the internal database.
After that, the SkyScout is equilibrated and moved to a similar box, a warm box (25º C.) A similar pattern of changing the field is followed, which changes the direction in which the SkyScout is “pointed”. Then an attached computer sends appropriate offsets. The SkyScout is calibrated back and forth at each of the two temperature extremes, so there is no hysteresis.
When this is completed, a “gravity test” moves the SkyScout through different angles-even upside-down-to test the calibration of the tilt sensor. To do this, the SkyScout is screwed to a CG5 mount where an inverted center section is attached to pendulum-like motor. As the SkyScout is slowly flung back and forth, the tilt position is measured and the offsets adjusted by computer. The final two tests measure pointing accuracy through different orientation angles. A final QA test checks all buttons, lights and cosmetics, applies labels, and if a language other than English is desired, loads additional firmware.
- Previous page Celestron SkyScout
- Next page SkyScout Accessories
Many amateurs started by using a GoTo. IMHO, the more astronomers the better. Talking to denizens of LAAS and reading cloudyskies.com, there is little sense of elitism. All amateurs are welcome, even and esp. those with GoTos.
I didn't have room to talk about the wedges that covert yoke mounts to equatorial mounts, but they exist for many yoke types. That way you can have the best of both worlds.
Finally, one of the books I recommended does just what you suggest: tries to teach the night sky so you can find stuff without using (or even using) a GoTo. Hope this addresses your comments.
Doug
The fact is that these new generations of scopes make astronomy so much more accessible to people who find astronomy interesting but don't have the time or ability to invest. They also make it simple to introduce new people to astronomy by quickly showing them lots of interesting things.
Plus, as a computer geek, there is nothing more fun than plugging your telescope into your laptop, hooking up a camera and driving it around from your computer. Do an easy DIY project like adapting a webcam to use with the scope and you have yourself tons of fun *and* you learn the night sky, you just don't waste months of time trying to figure out how to see anything.
I really praise the point of your article. I also love to teach everything I know about the topic to anyone who's interested in the subject, like most amateurs.
Like you said, there's no to little sense of elitism in those groups. But I also know this: Like all the really rewarding things in life, Astronomy requires persistence and solid interest.
I decided to comment your article since I disagree on some things you wrote and that contrast may help people who read it, look at the picture from another angle.
Trying to find Deep Sky Objects or the planets (very easy with little experience and knowledge) in the sky, is where most of the fun is! Having a computer doing it for you is like you own a Porsche and let a chauffeur drive you. The only difference here is that, unlike the chauffeur, the computer has no fun at all!
I didn't find anything interesting on cloudyskies.com, apparently is just a domain for sale. Did you mean www.cloudynights.com?
If your interest is solid, you've got nothing to fear, understanding the sky is a lot easier than most people think.
Diogo.
My bad! Yes of course I meant www.cloudynights.com. It's a great site for advice, and mostly cogent tips on purchasing and use.
I think we can agree that for some, starting with GoTos is a great way of getting into astronomy. Then you can progress to star charts and maps, relying less on the GoTo. I want to encourage people to begin this exciting hobby.
Amateur astronomers are one of the few science disciplines where amatuers can and do make professional level contributions!
And even though I understand how the SkyScout works, it is unbelievable to actually use it and watch it ID an object, or have it guide you to some random star in its database...Awesome product. For me, this really helped me better learn the night sky. It's like using a crutch (or a chaffeur) then weaning yourself away from it and driving yourself. Much less pain, and kick butt fun.
Hope this answers your concerns.
Clear skies!
Doug
I am a beginner in the field of astronomy and astrophotography and I would like to purchase some equiptment. Im not exactly sure what types of telescopes and astrophotography equiptment would be best for a beginner and it would be great if you could offer me some advice. I have done a lot of research on telescopes preferably under $500 and CCD cameras along with laptops. If you have any advice that would be great! Thanks.