Celestron Ultima Barlow Lens
Saturday, January 23rd, 2010 at
5:50 am
Buy Celestron Ultima Barlow Lens at Amazon
Product Description
Barlow lenses offer an easy, economical way to increase the magnification range of your eyepieces, and Celestron carries an assortment of these highly useful lenses. A Barlow lens doubles the magnifying power of your eyepiece by doubling its effective focal length. For example, an 18mm eyepiece used with a 2x Barlow lens would have the magnifying power of a 9mm eyepiece. It's like having two eyepieces in one!If you're looking for an affordable way to achieve high-power viewing of the moon and planets, double stars and even close-up views of terrestrial subjects, a Barlow lens is the answer.Barlow lenses mount into either your telescope's focuser or visual back.The .96" Economy model is a good choice when you want to expand your power ranges at a very economical price. Celestron's premium quality 1¼" achromatic Barlow lenses (#93507) are compact and lightweight. It is under three inches long, weighing in at 4 ounces.The Ultima Series Barlow (2x - 1¼") is an air-spaced, three element apochromatic design with a 27mm clear aperture. This lens features a very high quality, fully multicoated design. Amazingly compact and lightweight, it's just 5 ounces and 2.75" in length.
Buy Celestron Ultima Barlow Lens at Amazon
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Discount Price: $127.99 Original Price: $192.95 Savings upto 34% + Free Shipping Get 34% off on the purchase of Celestron 21049 PowerSeeker Telescope from Amazon.com with free shipping. The Celestron Telescope holds 3x Barlow Lens, German Equatorial Mount, 127mm Aperture, 1000mm Focal Length, Newtonian reflector device and 5x optical zoom. It comes with aluminum tripod and accessory tray. The Telescope features quick & easy no-tool setup, slow motion controls for smooth tracking, erect image optics and high transmission coatings for enhanced image. Features:- 127mm aperture range- 1000mm focal length- 7.87 focal ratio- 50x Magnification- 5×24 Finderscope- 13 Limiting Stellar Magnitude- 254 line/mm Photographic Resolution- 329x Light Gathering Power- 0.8-degree angular wide view- 20 inch optical tube length It has “The Sky” Level 1 planetarium software that includes 10000 object database and enhanced images. This PowerSeeker series of the telescope is designed to provide the user with…
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uhm … Gene Roddenberry was American, the guy that invented the Klingon language is American… and Star Trek hasn’t exactly won a lot of awards… not sure if by American crap you mean Jerry Springer and Ricky Lake… or what, but there are people that consider Star Trek for American crap…
Yes the 58 mm adapter may be a better choice if you can find a 72 mm to 58 mm step-down ring, however you will experience a lot of vignetting. Fisheye add-on lenses are really designed for use on lenses like the Canon 18-55 mm lens lengths and they have a 58 mm filter thread
Your 40D is a fine better than entry level DSLR. I would think you would prefer to save your pennies and buy a proper lens which can give you "fisheye" results like the Tokina 10-17 mm fisheye zoom
http://www.tokinalens.com/products/tokina/atx107afdx-a.html
Damn shinjuku is looking great.
Planets, maybe. Galaxies, no.
I don't recommend refractors under $500 of any kind. I only recommend $500 refractors (and mind you, that does not include the mount, which will likely be an additional $1000) to anyone who is already an expert. And i expect to be soundly slapped by experts for even suggesting it.
The problem with the Astromaster 70 mm refractor is that it's only $100. For $100, you can hardly get a good tripod. And if the mount is poor, then the entire experience is poor, no matter how good the optics are. My guess is that that optics are OK. Except that it's not big enough for galaxies. Many would say that a refractor at this price range would have unacceptable chromatic aberration. That's probably right. But other than the mount and the optics, this is probably a great scope.
For $100 and less, the options are:
8x binoculars. Much over 8x, and you can't hand hold them, so you need a great mount, which is going to cost more than $100. I've got some great 10×50 binoculars which cost $25. They have poor close focus, which is SO not a problem for astronomy. It's not even a problem for the neighbor's window, (which i only know about because i'm a bird watcher, and follow the birds where they fly – how was i supposed to know). They're also fragile. But they'll last decades if they're not abused. But as they're 10x, i only use them with my $250 tripod. That's the breaks. And as they're straight through binoculars, it's really tough to see much that's over about 45 degrees up from the horizon or higher. And the best part of the sky (has the least amount of atmosphere to see through) is straight overhead.
There's another option. Visit a club. Both the clubs i belong to have public star party events monthly or more often. Both clubs have loaner telescopes for members. For $25 a year, i can use any of several scopes from 100 mm to 550 mm whenever i want. And cameras and filters and so on. I estimate that the break even point on membership is several hundred years compared with buying my own stuff. Here's a handy link to find a club near you.
If you still want your own scope, you need to spend $200. You want a dobsonian mount, because they're very cheap, and so simple, it's hard for manufacturer's to get it wrong. Then since this style mount as the opening at the top, you want a telescope design that also has the eyepiece near the top. That's a Newtonian. Fortunately, the Newtonian design is also pretty simple. Simple is cheap. So a Newtonian Dob has the best bang for the buck of any design. IMO, this is without regard to how many bucks you have. But under about $1000, it's important.
So here's the low bid for high quality optics on a rock solid mount that fits in your car and sets up extremely quickly. The xt4.5 from Orion. It's 114 mm. From dark sky sites, you can see galaxies. I've done that. But that's true for my 254 mm scope too. 114 mm is good, but 254 mm is better. That 254 mm is better is not controversial.
If you do buy this scope, you'll still want to visit a club. We can tell you what to look at and how, but having someone show you is something else again.
I'm not in disagreement with Geoff. I'm just slightly more specific, and more willing to point to a good product than he is. But what does he know of the low end? His budget was at least 5 times more than mine, which was likely 7 times more than yours. But i hang with guys that have 114 mm reflectors. They're cool guys who really know what they're doing. They're just not fabulously rich – or formerly fabulously rich like me.
peter barlow in corrie is SO HOT x
Do you happen to wonder, somebody could really answer this question? Who is Ken Barlow? How could I know what he was listening to recently?
Oh my!… So sorry.
From Consumer's Reports: The NorthStar 3-Inch Telescope 78-8831 is Bushnell's entry-level reflector scope in its line of NorthStar scopes. Astronomical objects my also be photographed (camera adapter included) when the 78-8831 is equipped with a camera. This scope, however, is not a good choice for viewing terrestrial objects. RVO and back lit LCD screen provide information on the object being viewed both in voice output and on screen: "Jupiter fifth planet from sun. Largest planet in solar system, 16 moons, etc." The 1X finder scope has a large angle of view and red dot for precisely targeting desired objects. The Bushnell exclusive "Kinematic" mount is stable, accurate, and easy to use. This 700mm focal length, 3-inch aperture reflector coupled with 4mm and 20mm eyepieces will deliver satisfying views for beginners or more advanced gazers as a light weight travel scope. The 78-8831 package also includes a nearly useless Barlow lens for increasing magnification far beyond usable levels.
#9: Lensbaby 2.0 Nikon F Mount SLR Camera Lens (LB2N)
Marseillan, nella camargue, è un gran bel posto, ma forse un po’ troppo giù. St. Tropez in questo periodo è bellissima (niente casino). Arles è bella, anche aix-en-provence. In generale la Provenza è spettacolare.
ho letto il libro…un grande..
She was a school teacher who fell in love with a coloured man, Sam, who she was caught kissing, much to the anger of the man who loved her but she didnt like, he caught them and Sam was hung as it was illegal for him to kiss her, the man who hung him then asked Kate for a kiss she refused. Later he became her first victim she killed him then gave him the kiss he asked for.
Im not sure th dates of birth and death, but she became an outlaw famous for kissing her victims , not sure th exact number.
The one person she did not kill was Stanley Yelnats.
She died laughing as she allowed a lizard to bite her, because she was tired of life without her love, plus she knew if she died then no one would know where she had hidden her treasure.
Roooo mais cest du 2nd degré!
Discount Price: $127.99 Original Price: $192.95 Savings upto 34% + Free Shipping Get 34% off on the purchase of Celestron 21049 PowerSeeker Telescope from Amazon.com with free shipping. The Celestron Telescope holds 3x Barlow Lens, German Equatorial Mount, 127mm Aperture, 1000mm Focal Length, Newtonian reflector device and 5x optical zoom. It comes with aluminum tripod and accessory tray. The Telescope features quick & easy no-tool setup, slow motion controls for smooth tracking, erect image optics and high transmission coatings for enhanced image. Features:- 127mm aperture range- 1000mm focal length- 7.87 focal ratio- 50x Magnification- 5×24 Finderscope- 13 Limiting Stellar Magnitude- 254 line/mm Photographic Resolution- 329x Light Gathering Power- 0.8-degree angular wide view- 20 inch optical tube length It has “The Sky” Level 1 planetarium software that includes 10000 object database and enhanced images. This PowerSeeker series of the telescope is designed to provide the user with…
Książka Markowa obsługa klientów wyjaśnia, jak to się dzieje, że wśród setek marek jedne budzą pozytywne skojarzenia, a inne pozostają obojętne. Janelle Barlow i Paul Stewart wnikliwie omawiają architekturę marki, wskazując zarówno jawne, jak i ukryte aspekty sprzedaży, na przykład przekazywaną klientowi przez sprzedawcę wiarę w wartość produktu lub usługi….
If i were a japanese, I would have worked for canon, this is soooooooo coooooooooll mannnn
gary barlow was “robbed” of a sucessfull solo career i wont say who by!!!!!!
6ave.com has the Celestron 21041 60mm Refractor Telescope for $29 – 5% off with coupon code AFL5 = $28 with free shipping. Features a 3x Barlow lens, 5×24 Finderscope, two 1.25″ eyepieces and star diagonal. [Compare]
300an sih heheh, tapi lens nya yg dah Ultrasonic RT berapaan pak ?? in KD…RT 7d mahal banget! 550d jadinya
No, a Barlow lens has no affect on chromatic aberration. Chromatic aberration is caused by the prismatic effect of the objective lens, so a Barlow lens in the optical train can't change that. If anything, it will make the chromatic aberration appear worse because of the greater magnification. Aries makes a device called a Chromacor which is installed in the focuser and corrects chromatic aberration, but this is a fairly expensive solution and only works with specific achromats, such as the Synta 120mm f/8.3.
This is the gayest version I have ever heard. Sounds like something the Jonas Bros would do. Sorry.
Thinking about getting that macro lens I've had my eye on for a while. Spring will be bringing lots of flowers and bugs to take photos of.
16 inches eh?? thats power house! How do you move it around? on a dolly?
Human vision is what we call binocular. Each eye captures an image with some overlapping and the brain combines them into one. I guess Nature (Or God, depending on who you talk to) made the first functional version of Photoshop LOL.
A very good explanation of this concept can be found on Wikipedia, search for Binocular Vision.
Cheers,
Ravi
Sydney Morning Herald
Dockers try in vain to keep Barlow quiet
Sydney Morning Herald
Fremantle were desperately trying to play it down, but Adelaide coach Neil Craig felt no such responsibility – the AFL debut of Dockers’ rookie Michael …
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Buy Cheap Celestron 21041 60mm PowerSeeker Telescope Buy Low Price From Here Now The PowerSeekers come with all coated glass optical components with for enhanced image brightness and clarity. The Newtonian reflectors offer larger aperture and greater light gathering power needed to resolve the faint detail of hundreds of deep-sky and other celestial objects. All PowerSeekers come on either sturdy equatorial mounts for tracking the sky, or collapsible altazimuth mounts suitable for terrestrial viewing as well as astronomical use. The PowerSeekers come with a full range of eyepieces plus a 3x Barlow lens, allowing an increase in viewing power hundreds of times greater than that of an unaided eye! Readmore Technical Details – Affordable telescope for beginning astronomer; portable yet powerful – All-glass optical components with high transmission coatings for enhanced image brightness and clarity – Refractor optical design with a 60mm aperture and 700mm focal length – Altazimuth mount…
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Barlow. He has the most potential of the three, as Holmes isn't doing a whole lot right now and Branch, although good, will be watered down by all the other great WR options in Seattle. Stick with the player who'll get the most chances with the ball.
Id like one to spy on my enemies on the other side of town easier lol.