|商品尺寸||22.1 x 10.92 x 27.94 cm; 1.49 公斤|
|包装清单||Tripod Adapter, Celestron Skymaster Giant 15X70 Binoculars|
|产品特性||Fog Proof, Water Rersistant, Multi Coated Optics|
Celestron 星特朗 SkyMaster Giant 15x70双筒望远镜-天文望远镜-用于观星和远距离观察的望远镜-包括三脚架适配器和保护套
SkyMaster 15x70 mm Porro Binocular
Great affordable choice for binocular astronomy or long-distance terrestrial viewing.
Features and Benefits
Large Objective Lens
Large 70 mm objective lens offers maximum image brightness in low-light conditions.
15x magnification is great for both astronomical and terrestrial viewing.
Can be mounted on a tripod for steady, hands-free viewing.
Quick & Easy Focusing
The large centre focus dial makes sharp focusing quick and easy.
Features and Benefits
Comfortable & Eyeglass Friendly
Soft, rubber eyecups are comfortable to use and can be folded down for use with eyeglasses.
Durable Textured Finish
The rugged, armoured exterior provides protection as well as a secure gripping surface.
Multiple Accessories Included
Objective lens cap, rain guard, carrying case, neck strap, lens cloth, and instruction manual all included.
|SkyMaster 12x60||SkyMaster 15x70||SkyMaster 20x80||SkyMaster 25x70|
|Field of View (degrees)||5.3°||4.4°||3.7°||2.7°|
|Field of View (feet @ 1000yds)||278||230||195||141|
|Diopter Range||-4 to +8||-4 to +8||-4 to +8||-5 to +5|
|Close Focus Distance (feet)||47.2 ft||52.5 ft||106.3 ft||102.5|
|Eye Relief (mm)||17mm||18mm||18mm||13mm|
|Environmental Protection||Water Resistant||Water Resistant||Water Resistant||Water Resistant|
This is a great product overall. You will see spectacular views of the moon and larger deep sky objects like the Andromeda galaxy and the Orion nebula. These are a better entry to the world of astronomy than a telescope due to their portability and ease of use.
First, these binoculars are meant for astronomy.
These are heavy, and due to the 15x magnification need to be mounted on a monopod or tripod. I can't overemphasize that.
The focus is slow and stiff.
If sports, hunting, or birding is your primary use, look elsewhere at smaller, lighter binoculars.
If astronomy is you primary use, you may be able to live with these for occasional terrestrial viewing.
These binoculars are not a telescope. Sounds kind of simplistic,I know, but if you are seeking to see the bands on Jupiter or detail in Satrun's rings, these won't do that for you. But you will be able to see Jupiter's moons and the rings on Saturn - enough that you can tell what you're looking at.
The "very good":
Optically these binoculars are very good. The field is bright and flat and they focus sharp to the edges. False color (Chromatic aberration) is visible as red/blue fringing around bright objects. It is not at all severe, but it is there and visible on bright celestial and high contrast terrestrial objects. It is worse at the edges of the field than in the center. Views of large deep sky objects like the Orion nebula are really beautiful. The contrast is very good.
The "just ok"
Mechanically the focus is a little hard to adjust. There is some play in the mechanism that has to be accounted for, but it is very easy to focus out, then back in to the point of perfect focus. Once focused they stay that way for a long time.
The "totally unacceptable"
The plastic tripod adapter is totally and completely useless. The binoculars just rotate back and forth and it takes forever for them to settle down after you move them. That's a shame because at 15x magnification these need to be mounted on a sturdy tripod. Even in light wind the tripod adapter just causes the binoculars to wiggle back and forth.
I have ordered the Celestron 93524 Binocular Tripod Adapter and will see if it is good enough. Even with that adapter, the center of graviry of the binoculars won't be at the tripod's pivot point, so you have to keep the friction on and that makes it harder to move them. A better balanced tripod mounting scheme would be killer.
An incredible value. Good optics, decent mechanics, and an unusable tripod adapter.
Throw a decent tripod adapter that is sturdy and fit for the purpose. Extra credit for centering the CG at the the tripod attachment point. Lose the useless strap, and raise the price
Vertical prism adjustment screw is under the right grip inside the center towards the front. The horizontal prism adjustment screw is just below the 0 in "15x70" marking.
Also measure the distance between the center of your pupils so you can better adjust the binocular's IDP (interpupilary distance). Just match it up to the distance between the centres of the eye holes on binoculars.
Amazing price for the specs, but not without quality issues. Mine were very uncomfortable to look through and once I got them on a steady tripod in daylight I realized why. They were collimated to the very extremes of adjustment so that 1/2 of the field of view is out of focus. When looking at the eyepieces from 1' away, you could see they were cut down to football shapes. I tried for several hours to collimate correctly. I either can get a 100% field of view in clear focus. Or I can get them collimated with half in focus/half out of focus & that requires the scews to backed completely off (which leaves the prisms loose and very prone to going out of adjustment).
Sent back for an exchange. Hopefully I'll eventually get a good set. When adjusted individually, each side had a beautiful picture with little abberation. From what I've read, these are very prone to collimation issues. If they only needed periodic adjustment I'd give them 4 stars, but these were so far out of alignment that my first pair was useless.
Just received my 2nd pair. Jupiter is double vision again. Even worse than the first pair. What a surprise.
I'd consider buying another pair if Celestron could assure me the manufacturing defect has been corrected- but how can one know???