Source: Tom's Guide US | Keywords: celestron, telescope | Themes: Digital Entertainment, Digital Cameras
16. VistaPix Use Tests
On low power, you might be able to hand hold the VistaPix in bright light, but I took more stable pictures when I used the included remote shutter control. When I tried to take a picture of a waning moon, with the maximum -2.0 EV setting, the exposure was too long-any highlights of the moon were not visible, and digital correction did not improve the picture. Other pictures taken during daylight were nicely exposed and appeared reasonably sharp.
Shooting directly at a very bright sun reflection, I noticed chromatic aberration at the edges on high power (purple fringing, which represents an inability to bring all planes of light to a common focus). This is an extreme test, though; in the low power picture, chroma is not visible.
This reflection off the window was very bright.
At high power, this reflection barely shows only a trace of chroma.
Most cameras would wash out completely in this test. At high power, it was difficult to focus, because the LCD was washed out, and the barely visible electronic focus bar would not measure contrast properly in this washed out scene. In a more normal scene, I incorrectly focused on the street light, and not the palm tree, though the focus meter was in the high 800s. In this series of pictures, the street lamp was over a half block away, and the palm tree is across the street from the light.
Shot with the IS70, this palm tree is about a block away
High power view of exact scene above. The streetlight is over half a block away, and the palm tree further than that.
A video left on this demo camera, taken during a computer show, showed the power of this spotting scope, highlighting a banner from across the very large hall.
- VistaPix IS70 Spotting...
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GoTo mounts are for lazy people who don't really understand the essence of observing the sky. It's certainly a fun thing to create if you are an engineer, but if you're considering using one, take my advice and buy a book with pictures of the Messier catalog, it's a lot cheaper. A true amateur astronomer never uses those revolting, despicable, hideous GoTo mounts. Get a real standard equatorial mount. Get a good sky atlas. Get a pair of quality binoculars. Know your sky! That's astronomy...
A sensitive topic to be sure. But the point of the article was to encourage those who have an interest in astronomy but never bit the bullet. That is, they don't own a scope because they aren't willing to learn all that needs to be done to find stuff. OK, even lazy. And our readers totally grok computers.
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
I think the guys who say to get a star chart and spend 6 months learning how to find and track things are missing the point and living in the 19th century.
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 totally agree with smurfdog - you spend more time observing and imaging objects than trying to find them - and most of them are very dim anyways. THe manual method of finding objects is definitely 19th century stuff.
Science is ever changing and self-correcting. To memorize the sky from Earth is one thing and to explore the universe is another. Technology makes Astronomy possible for all who are willing to learn and grow. Why not use both to your advantage.
Doug,
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.
Diogo et al,
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
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.