TwinStar Blue 80mm iOptron Computerized GPS Refractor Telescope

!9# TwinStar Blue 80mm iOptron Computerized GPS Refractor Telescope

Brand : TwinStar / iOptron | Rate : | Price :
Post Date : Nov 20, 2011 02:42:13 | Usually ships in 1-2 business days

This telescope is ideal for backyard astronomy enthusiasts or older children with space on the brain. Simply turn the telescope on, choose the object you want to see on the handheld controller and the computerized GPS mount does the rest. The fully coated achromatic 80mm primary objective lens is maintenance free and ready to use right out of the box. With a short 400mm focal length, this little bundle of power packs a super-fast F/5.0, which means it's the perfect light-gathering instrument for wide-field and deep space astronomy. With this kind of light-gathering power, you will see bright images of anything through either of the two powerful Kellner eyepieces. That makes this telescope ideal for just about any observing application. The iOptron SmartStar-G Alt-Azimuth Mount with GPS, a.k.a. The Cube, is probably the most functional and flexible unit on the market. Both axis motors are built into a small single unit. In addition, there are no "dead spots" -- so you can point your telescope anywhere above the horizon. This mount comes standard with AC connection, but also accepts 8 AA cell batteries for use at home or in the field (Batteries sold separately). The GoToNova computerized control system is by far the most technologically advanced automated tracking system available on the market today. With a database of 50,000 celestial objects, including all of the most famous galaxies, nebulae, star clusters, not to mention the planets, you'll be able to enjoy star gazing with the simple push of a button. There is no need to align the telescope, with GPS, it knows its location. The GoToNova Controller is much easier to use than other similar products. The hand controller is more intuitive with menu categories better organized. It also has a larger LCD screen with more lines of content compared with the competition. With the easy-to-use hand controller you can easily set up your telescope and select where you want to go.

• 80mm fully coated achromatic objective lens, 400mm focal length
• Super Bright f/5.0 F-ratio for outstanding brightness
• 25mm & 10mm Kellner 1.25" diameter eyepieces
• 6x26 finding scope included
• Portable "instant use" mini-tripod and carry bag included

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Celestron C4-R 102mm Refractor Telescope

!9# Celestron C4-R 102mm Refractor Telescope

Brand : Celestron | Rate : | Price :
Post Date : Oct 28, 2011 07:40:07 | N/A

Celestron C4-R 102mm Refractor Telescope

The Celestron C102HD telescope is regarded as a major bargain for good reason. Instead of computerized bells and whistles, you get the solid optical performance of a full sized four-inch achromatic refractor combined with a serviceable German Equatorial mount. Experienced observers frequently recommend the C102HD to beginning astronomers for one simple reason: it delivers great views of the planets.

How great are the views? In side by side tests, the C102HD consistently showed better contrast and more detail on Jupiter and Saturn than my five inch Schmidt-Cassegrain. On a night when my C5 showed five or six cloud belts across the face of Jupiter, the C102HD showed seven. On Saturn, when I push the magnification to 200X, the Cassini division is crisp, I see cloud belts on the planet; I see shading in the A and B rings, and even glimpse the Crepe ring. When looking at the star Epsilon Lyrae, the famous double-double, the C102HD showed me four crisp bright beads of light, without the bright diffraction rings and scattered light that I see in my C5.

One drawback: the CG-4 equatorial mount included with the C102HD is only barely adequate to support a forty-inch plus telescope. I found that it was better to set up on grass or gravel and leave the tripod about a foot short of full extension--this significantly reduces the vibration problems that otherwise trouble this mount.

What accessories would I recommend? Adding a CG4 motor drive significantly increased my viewing pleasure by allowing the telescope to track for long periods without my touching the controls. As with any equatorial mount, you need to point the Polar axis at the North Star, Polaris, for the tracking to work properly (don't worry, this is all explained in the manual). As for eyepieces, the included 20mm plossl eyepiece gives a magnification of 50X and a one degree true field of view. You'll want a 32mm eyepiece to take in the full view of star clusters like the Pleiades and the Double Cluster in Perseus. The Ultima 7.5mm is ideal for high power views of Jupiter and Saturn. I usually suggest a good star chart with any telescope, but for viewing the planets, a subscription to Sky and Telescope magazine might be even more useful; the planets, after all, move from one month to the next! --Jeff Phillips

Pros:

• Solid optical performer
• Great views of the planets

Con:

• Barely adequate mount

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Celestron 52303 Regal Refractor 100mm F-ED Spotting Scope

!9# Celestron 52303 Regal Refractor 100mm F-ED Spotting Scope

Brand : Celestron | Rate : | Price : $599.95
Post Date : Aug 19, 2011 13:50:17 | Usually ships in 24 hours

100MM (3.1-Inch) diameter 45⁰ angled APO refracting spotting scope. Waterproof 540MM focal length (f/5.4) Fully multi-coated optics Low dispersion fluoro ED glass

• Regal 100 F-ED Refractor scope.
• 45? angled APO refracting spotting scope
• Waterproof
• Fully multi-coated optics

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!9# Celestron 21064 AstroMaster 90 EQ Refractor Telescope

Brand : Celestron | Rate : | Price : $220.66
Post Date : Aug 04, 2011 14:27:33 | Usually ships in 2-3 business days

Celestron 21064 AstroMaster 90 EQ Refractor Telescope

• Quick and easy no-tool setup
• Permanently mounted StarPointer
• Erect image optics - Ideal for terrestrial and astronomical use
• Quick release dovetail attachment - no tool setup
• German Equatorial mount with Setting circles - to accurately locate and track sky objects

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Celestron 21064 AstroMaster 90 EQ Refractor Telescope

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