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Etx- 80at-tc / 0805-04-21 Etx-80mm Achromatic Refracting Telescope It’s NOT the Hubble…but for under 0, really delivers. – Roger O. Campbell – Burlington, VT
If you take the time to calibrate the motors, train the drives, and lay it level, point to true North, it does go to objects asked for.
And if you use the high precision mode, it references to a proximal known point, then slews accurately to the asked-for object. A final caveat – use lower power for searches, then up the power. Optics are crisp for this price point.
Poor way to allocate your telescope dollars – Michael J Edelman – Huntington Woods, MI USA
This scope seems to have, on the surface, a lot to recommend it- decent optics, computer guidance, etc., and to the novice amateur astronomer, it looks like a pretty good deal. Meade’s pushing it as a slightly smaller version fo their very popular ETX90- but is it?
The ETX 90 is a long-focus Maksutov-Cassegrain- their attempt to clone the Questar at a fraction of the cost. The ETX doesn’t really compare to the Questar (not surprising, as Questar spends more on the optics than the ETX costs!) but it’s still pretty good for the money. An ETX90 can deliver sharp images up to perhaps 200x under ideal conditions.
The ETX80, though, is a very different animal. It’s a short-focus 80mm refractor- sort of like half of a pair of binoculars- on a computer drive. And a short focus scope of this size is really only good up to about 40x magnification before secondary color starts blurring the image. Yes, you can see the rings of Saturn, but a decent pair of 7×50 binoculars will show you that as well.
The computer guide is less useful than it might seem; it takes time to set up and align and is really not needed on such a low powered telescope. You don’t need a computer to find the moon, the larger planets or the brighter objects that this scope is capable of seeing. What you have, in essence, is a 0 telescope on a 0 computerized mount. In that price range, it’s silly to spend half your budget on automation.
If you have 0 for a telescope, Amazon also sells Orion Dobsonian reflectors in various sizes that have far more light gathering ability and can see much dimmer objects. They’re also steady as a rock. They may not have the same high-tech coolness factor, but they never need batteries, and for the typical beginner they’re a much better choice.
Awesome performance for the price – Marty Kellum – Athens, AL United States
First off, buyers must be aware that this is only an 80mm refractor and will not blow you away with its deep sky ability. That being said, this scope is a perfect starter scope for lunar and planetary exploration.
I was pleasantly surprised with the go-to unit found on the ETX-80. Easy alignment with an option to park the scope back at home position so that if you set up the telescope in the same place everytime, you don’t have to align near as often.
Observing with the scope was very easy as my target was in the eyepiece field (26mm) all of the time. Saturn’s rings were fully visible with the 9.7mm eyepiece as were Jupiter and her 4 largest moons. With clear viewing, cloud bands are even visible on Jupiter.
The only drawback I have found is that with the 9.7mm + barlow combination (82X magnification) it becomes very difficult to fine focus in on Jupiter. The focus knob is a little unwieldy and shakes the telescope when “dialing in”. A more stable tripod and a different focuser would make this a 5 star item.
Meade: ETX-80AT-TC Optical Design Clear Aperture 80mm (3.15″) Focal Length, Focal Ratio 400mm F/5 Maximum Practical Visual Power: 275x Optical Tube Dim: Dia X Length 3.6″ Dia X 14.5″ Includes 2 Premium 4-element 1.25″ Super Plossl Eyepieces (sp 9.7mm, Sp 26mm) For Long Eye-relief & Wide Visual Field Built-in Barlow Lens Flips Into Position When Needed For Lunar & Planetary Surface Features Internal Time Chip Keeps Precise Factory Calibrated Time & Date Bubble Level/compass To Make Initialization Faster Telescope Mounting Fork Type Double Tine Ra & Dec Motor Drive Systems 12v Dc Servo Motors With Encoders Slow-motion Controls Electric, 9-speed Both Axes Autostar ™ Suite Astronomer Software On Dvd For Pc, With Instructional Dvd Includes Autostar ™ Controller #494 Includes Planetarium Software & Instructional Dvd
Etx- 80at-tc / 0805-04-21 Etx-80mm Achromatic Refracting Telescope
LaCie – 12big rack expansion I/O Module: LaCie: 131005
Ce module d’extension d’E/S de rechange peut être utilisé avec le 12big Rack Expansion. Lorsqu’il est branché sur un boîtier de module d’E/S simple, il transforme le produit en une unité d’E/S double redondante. Cet article peut également être utilisé en tant que pièce de rechange.
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