Showing posts with label telescopes. Show all posts
Showing posts with label telescopes. Show all posts

Orion T-ring for Minolta Camera Review

Orion T-ring for Minolta Camera
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This T-ring works as advertised. Along with the appropriate T-adaptor for your telescope you can use it to mate your manual focus Minolta camera body to your telescope. The T-ring has threads on one end that screw into your T-adaptor (or even directly to some telescopes) and a bayonet mount for your camera on the other end. This allows a solid connection for your camera to the telescope.

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A T-ring converts a camera's lens mount to a standard "T-thread," allowing you to couple a camera body to a camera adapter or, in some cases, directly to the focuser of a telescope. All camera adapters, including Celestron and Meade T-adapters and universal camera adapters, will fit this T-thread. Have a new digital SLR camera? We've got the T-rings you'll need. The #5224 T-ring fits the Canon 300D Digital Rebel, also the 10D, 20D, 20Da, 30D, 350D, and 5D digital SLRs. For Nikon owners, the #5205 T-ring is compatible with the Nikon D50, D70, D70s, and D200.

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1.25" Orion Variable Universal Camera Adapter Review

1.25 Orion Variable Universal Camera Adapter
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I bought this along with the Orion T-ring for my digital Canon Rebel Xt and am very happy with this product. It has been a childhood dream of mine to see the planets and space as never before, and now I can capture those moments on my camera and put them on my computer. For any avid photographer or an amateur wanting to get some good pictures of space, this adapter is a must-have. Do not forget to buy the T-ring as well to fit the camera make you have.

Click Here to see more reviews about: 1.25" Orion Variable Universal Camera Adapter

Universal camera adapters allow attachment of a camera body to reflector or refractor telescopes for both prime-focus and eyepiece-projection photography. The adapter slides into the eyepiece holder as an eyepiece normally would. The adapters are composed of two detachable parts: a prime-focus adapter (or "T-adapter") for prime-focus photography, and an extension tube for eyepiece-projection photography. A setscrew in the extension tube holds the eyepiece in place. The adapters are compatible with 1.25" focusers. Each is precision made of black-anodized aluminum and is threaded for filters. A T-ring, sold separately, is required to couple your specific camera body to the universal adapter.

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Meade 1.25-Inch Basic Camera Adapter for Telescope Review

Meade 1.25-Inch Basic Camera Adapter for Telescope
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This adapter works fine in my etx-90, however it's tuff to fit it with the 26mm eyepiece, which is not a major problem b/c I usually use an 18 or smaller. Other than that, this is a good item.


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Your telescope. Your camera. For photographing the moon, planets and stars through your telescope using 1.25-Inch eyepieces. Accepts an eyepiece that will project an enlarged image onto the camera film plane or CCD chip. Each camera requires a separate T-mount.

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Celestron NexStar 5 SE Telescope Review

Celestron NexStar 5 SE Telescope
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This is a very nice telescope. I have been using it the past week and have viewed the Moon, Venus, Jupiter. Overall the optics are excellent. But there are a few issues, which had I known earlier I may not have purchased this scope.
1. Celestron advertises that the scope can be used with 8 AA batteries. This is not completely true. The batteries drain very quickly and will probably not even last one viewing session (say 30 mins).
2. Without power the telescope cannot be moved along the azimuth (left-right direction). So you cannot use it at all.
So essentially if you want to take this telescope out of the city to some dark sky location you have to buy a powertank (or maybe run it off your car). I would have liked a design that allows me to use the goto feature when I want it but still be able to slew the telescope manually, without power.
Why do I still give it 3 stars. Well, Celestron tech support is very responsive (over e-mail). The telescope itself is excellent (optically). I have gotten very good views of planets. It has been a little too cloudy and light polluted (I live in a city) for me to try seeing nebulae.
Details:
The DC motors that slew the telescope are very sensitive to the voltage and current of the power supply. If you use the telescope for 20-30 minutes after that the batteries drain down and the scope becomes unusable (till you replace the batteries of course). Celestron tech support told me that they recommend using the battery only as an emergency back up!!! Strange that they don't mention on their website that batteries are only for "backup" and you have to run the telescope on wall socket, or a "power tank".

Click Here to see more reviews about: Celestron NexStar 5 SE Telescope

Boost your viewing experience with 56% more light gathering power in this high-quality telescope.Features:5" Schmidt – Cassegrain telescope with 125mm aperture56% more light gathering power than 4" models1250mm focal lengthFocal ratio: 10Ultra portable – weighs just 28 lbs. including the tripodAn ideal telescope for observing and photographing the wonders of spaceCombines the classic heritage of the original orange tube telescopes with the latest state-of-the-art featuresStarBright XLT high transmission coatings come standardProven NexStar computer control technologyIncludes:StarPointer finderscope to help with alignment and accurately locating objectsQuick release fork arm mount, optical tube and accessory tray for no-tool setupSturdy computerized altazimuth mountInternal battery compartment to prevent cord wrap during useUltra sturdy steel tripod features built-in wedge for astrophotographyCD-ROM "The Sky" Astronomy Software which provides education about the sky and printable sky mapsNearly 40,000 object database with 200 user-definable objects and expanded information on over 200 objectsSkyAlign allows you to align on any three bright celestial objects, making for a fast and easy alignment processFlash upgradeable hand control software and motor control units for downloading product updates over the InternetCamera control feature and shutter release cable that allows you to remotely take a series of exposures using your digital SLR cameraCustom database lists of all the most famous deep-sky objects by name and catalog number; the most beautiful double, triple and quadruple stars; variable star; solar systems; objects and asterismsDC Servo motors with encoders on both axesDouble line, 16-character Liquid Crystal Display Hand Control with backlit LED buttons for easy operation of GOTO featuresNexRemote telescope control software and RS-232 cable included for advanced control of your telescope via computerGPS-compatible with optional CN16 GPS Ac

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Celestron CPC 1100 StarBright XLT GPS Schmidt-Cassegrain 2800mm Telescope with Tripod and Tube Review

Celestron CPC 1100 StarBright XLT GPS Schmidt-Cassegrain 2800mm Telescope with Tripod and Tube
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I bought this telescope primarily for visual use. I almost decided to get a smaller aperture. However, after seeing the telescope size and comments on it's handling, I decided it would be light enough for me to setup alone. The telescope tube and fork are pretty heavy. However, the ergonomics are very good such that lifting the tube isn't too bad (carried close to your body).
I was seriously tempted by the Meade LX200R 10" and 12" scopes. In the end I decided the ergonomics on the Celestron were better and it was quite a bit cheaper (Celestron 11" was cheaper than Meade 10"). The fork mount is perfect for visual use since it can be setup very quickly. I suspect the Meades would be better for serious imaging if mounted on an equatorial mount. I was concerned about getting a telescope shipped to my home, but in the end it wasn't damaged in transport.
I love the goto features of the scope. Using the handheld controller you can quickly find objects in the sky. I find the built in database quite good for visual objects. I quickly started using the Constellation view mode (view objects in a constellation) to reduce the amount of slewing across the sky.
I find the auto-sky-align feature to work pretty well. This alignment mode is great since you don't need to know star names; just pick 3 bright stars. However, it is prone to occasionally fail alignment and 3 stars take more time than 2 stars. To eliminate the alignment failure and decrease the alignment time (2 stars only), I now primarily use auto-2-star align despite the fact you need to know the star names.
The 10x50 finder scope is not terribly good but does the job.
My focus knob is not as smooth in turning as some telescopes in the store. I notice this more as the scope is near the horizon. There is quite a bit of mirror shift when focusing but this is a Schmidt-Cassegrain characteristic. It took me some practice to obtain fine focus. I plan to order a feathertouch focuser to get finer control over the focus.
My telescope was shipped with the GPS turned off. To turn it on you must go deep into the menus. I also discovered that you must set your scope to the proper daylight savings time setting or some stars will be out of range.
The cord wrap feature sometimes annoys me. This feature tries to prevent wrapping the power cord. However, I usually watch for this problem anyhow and the cordwrap feature sometimes forces longer than necessary telescope slews. Cord wrap gets turned on automatically after every alignment.
The tripod seems pretty heavy duty and comes with a nice heavy eyepiece tray. My tripod did not come with a leveling bubble. Placing the telescope fork on the tripod is pretty easy. Once you manage to grab the center guide pin with the fork, you simply need to rotate the base until the scope falls into the retention screw cutouts. Sometimes finding the center guide pin can take about 30 seconds but you get better with time.
Optically the scope seems pretty good so far. You can see the Cassini division of Saturn and banding on Saturn and Jupiter. It took me a while to figure out collimation. I ordered a set of Bob's knobs and played with the collimation for a while to get the hang of it. I have tried to perform a star test and didn't get a perfect diffraction pattern on either side of focus. I believe there is possibly a slight downturned edge in the mirror from looking at the diffraction patterns. However, so far objects in the telescope look great and I am not an optical expert anyway.
I have used the Neximage web cam for Lunar and planet images. The images turn out great. I have also tried some limited piggyback photography. All of my viewing and imaging so far has been from my backyard in a suburban light polluted area. I am able to see quite a few galaxies and nebula from my backyard.
Celestron technical support is a bit slow in responding to inquiries through their web site.
Overall, this is a great scope for visual use.

Click Here to see more reviews about: Celestron CPC 1100 StarBright XLT GPS Schmidt-Cassegrain 2800mm Telescope with Tripod and Tube

Tomorrow's next generation 8, 9.25, and 11 computerized GPS SCT's are here now!New alignment technology, advanced engineering, and bold new design at a lower price that is out of this world!Celestron's new CPC Series with revolutionary SkyAlign Alignment Technology redefines everything that amateur astronomers are looking for: quick and simple alignment, GPS, unsurpassed optical quality, ease of set-up and use, ergonomics, enhanced computerization and, most important, affordability.

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Celestron 93635-A T-Adapter for NexStar 4GT Review

Celestron 93635-A T-Adapter for NexStar 4GT
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The Celestron 93635-A T-Adapter connects the rear cell of a NexStar 4 or C90 scope to a T-ring (sold seperately) which is designed to fit your specific camera. There isn't much to the adapter -- just a threaded metal tube with a metal screw-on ring on one end. Note that you will need to use your camera in fully manual mode though the camera's internal light meter will probably function normally allowing you to set the shutter speed for a proper exposure during daylight hours.
While the T-Adapter does function as advertised, it suffers from a design flaw -- the connecting tube is too narrow causing severe vignetting (i.e., the corners of phtots are cut off and appear very dark or black) at least for a 35mm full frame camera mounted to a C90. I have not tried it with a C-sized digital camera yet. Due to the severity of vignetting, you might want to consider an alternative model of T-Adapter or, better yet, a Tele-Extender designed for Schmidt-Cassegrain telescopes such as the Orion 1.25" Standard Tele-Extender which can be used in place of a T-adapter on the C90, doesn't suffer from these sever vignetting problems and is much more versatile.
Note: A tele-extender is similar to the T-adapter but is designed to optionally allow you to place a telescope eyepiece inside - between the scope and the camera - for even higher magnification. For example, with the T-adapter, a C90 can function as a 1200mm manual camera lens. With a tele-extender, it can do the same or, by adding a 18mm eyepiece, act as a 5000mm or greater lens.

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A T-Adapter allows you to attach your 35mm SLR camera to the prime focus of your telescope or spotting scope. This arrangement is used for terrestrial photography and short exposure lunar and planetary photography. It can also be used for long exposure deep-sky photography when using a separate guidescope.Both a T-Adapter and T-Ring are required to mount a camera to your instrument.

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Celestron 21061 AstroMaster 70 AZ Refractor Telescope Review

Celestron 21061 AstroMaster 70 AZ Refractor Telescope
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I have been a backyard stargazer for several years. My very nice 8" Dobsonian Reflector became too much to haul to darker skies away from light pollution, so I have been indoors on starry nights for a couple of years now. When a local camera shop was going out of business, they had a fabulous blow-out price on a Celestron AZ70 Refractor. I know two things about refractors 1) beware of flimsey tripods and 2) beware of extravagant claims of HIGH POWER. I first noticed intelligent power claims on the box (60X per aperture inch TOPS). The Celestron AZ70 suits all my needs. It's compact and light enough to transport easily, it has GREAT optics and a VERY macho tripod and Starfinder with a bright reticle which nailed Venus in 1 easy try right out of the box. Absolutely the best 50 bucks I ever spent and I would GLADLY recommend it to anyone for 4 times that price.

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TE3)CELESTRON ASTROMASTER 70AZ SCOPE

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Bushnell 1.25" Camera Adapter for any Reflector or Refractor Telescope. Review

Bushnell 1.25 Camera Adapter for any Reflector or Refractor Telescope.
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Product works grate with my Rebel XTi cam. Good pricing but I waited for a week and half as I opted for the Free shipping. It perfectly fits my Telescope. This is durable and I recommend this to any one who required it.

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Available Accessories:1.25" Format 25 mm Kellner Eyepiece, 1.25" Format 9 mm Kellner Eyepiece, 1.25" Format Erecting Prism, 1.25" Format Camera Adapter, 1.25" Format 2x Barlow Lens, and Clock Drive.

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Celestron 93625 Universal 1.25-inch Camera T-Adapter Review

Celestron 93625 Universal 1.25-inch Camera T-Adapter
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T-adapters can turn your telescope into an amazing telephoto lens and this one will work with any that have a 1.25" visual back. This piece has a 1.25" inserting slip connector which replaces the Star Diagonal on your telescope and the title given by Celestron is entirely misleading, it refers to a generic measurement of an inch (actually 1.25"). The faulty description continues in the product description: it WILL NOT FIT .96" visual backed telescopes such as the Celestron C90, or the Nexstar 4GT. In that case you'll need this part Celestron 93635-A T-Adapter for NexStar 4GT Those telescopes have a .96" visual back and the T-adapter has a female ring which screws over the visual back.
In either case you still need a T-Ring to connect to your camera, be careful there too as there are now ones for 58mm digital cameras that are larger than the older 35mm.
Getting Amazon to change these descriptions is difficult so hopefully this review can correct it.

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T-Adapter, Universal - 1-1/4"

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Celestron NexStar 6 SE Telescope Review

Celestron NexStar 6 SE Telescope
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We used our scope for the first time recently. I had read the manual and a lot of online materials before we received our scope so I was somewhat familiar with how to use it. I input our location using our place's longiture and latitude and used the unit's "two star" alignment setting since I could only make out two bright stars in our light-polluted location (Tokyo, Japan). After this, I input "Jupiter" into the hand controller and the scope slewed to the planet and placed it right in the center of the eyepiece's field of view. My family and I spent the next hour letting the scope swing around to various stars and binary systems that I couldn't see with my unaided eyes but showed up beautifully in the eyepiece. I recommend taking a look at Albireo in the list of "named stars" on the hand controller very highly.
I knew that a telescope, much like a camera, is a device that needs accessories. Therefore, before I bought the scope I purchased (used) a 9mm ocular, a barlow lens, a better star diagonal and a battery pack to power this thing. The car battery adapter I purchased with the scope. A lot of people don't use a case so I can understand why Celestron didn't include one with this to keep the price down. One of those plastic storage boxes should work well if you use the foam that comes with the scope to keep it in place.
The optics of the telescope and the special coatings on the optics are a great improvement over what I experienced 20 years ago with my first 5" SCT scope. The images are sharp and this scope is suitable for both planetary viewing and deep space objects. However, the deep space objects will require you to find a dark site to be really visable. Our first night of viewing included a look at M13, a globular cluster. It was there but the local light pollution required me to use "averted vision" to see it.
I highly recommend this product for those who want to get into Astronomy at a reasonable price. There are bigger scopes out there but the prices and size of these telescopes make this one a great compromise on size, performance and "bang for the buck." I don't think that you will be disappointed. You will need a few accessories but buy those as you need them.

Click Here to see more reviews about: Celestron NexStar 6 SE Telescope

Get serious performance and easy portability with this high-quality altazimuth computerized telescope.Features:6" Schmidt-Cassegrain telescope with 150mm aperture44% more light gathering power than 5" models1500mm focal lengthFocal ratio: 10Ultra portable – weighs 30 lbs. including the tripodCombines the classic heritage of the original orange tube telescopes with the latest state-of-the-art featuresStarBright XLT high transmission coatings come standardCelestron's unique patented single fork arm with integral hand control design provides a rigid and smooth operating structure for the optical tubeStar diagonal provides more comfortable viewing position when observing objects that are high in the skyProven NexStar computer control technologyIncludes:Quick release fork arm mount, optical tube and accessory tray for no-tool setupStarPointer finderscope to help with alignment and accurately locating objectsSturdy computerized altazimuth mountInternal battery compartment to prevent cord wrap during useUltra sturdy steel tripod with accessory tray40,000 object database with 200 user-definable objects and expanded information on over 200 objectsSkyAlign allows you to align on any three bright celestial objects, making for a fast and easy alignment processFlash upgradeable hand control software and motor control units for downloading product updates over the InternetAutoguider port for long exposure astrophotographyDC Servo motors with encoders on both axesCustom database lists of all the most famous deep-sky objects by name and catalog number; the most beautiful double, triple and quadruple stars; variable star; solar systems; objects and asterismsDouble line, 16-character Liquid Crystal Display Hand Control with backlit LED buttons for easy operation of GOTO featuresNexRemote telescope control software and RS-232 cable included for advanced control of your telescope via computerGPS-compatible with optional CN16 GPS Accessory (93968)Whether you are a seasoned ast

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