Celestron Skymaster 20X80 Porro Binoculars, Black

I bought it during the 11/11 sale for around for half the price, it was out of collimation and out of alignment, because of the collimation views were very poor and blurry, I could have fixed it but since I could get a replacement I returned it and got a replacement, out of the box it was well aligned and collimated , many of the bulk manufactured items have Quality control issues, so you have to play this gamble and a word of advice, only one time replacement is allowed the second time you return it they refund the money

Beautifully clear image offered by the large 80mm lens. They have a robust feel and seem to be well made and should last for many years with care. These are a great starter pair for sky watching, but if that is your main use for them you W|ILL need a Tripod. They are heavy but thats not the real problem, if you focus on anything that is on considerable magnification it is impossible to hold them still enough to get any sort or real idea of the target image, in addition as soon as you try and adjust the focus, you loose the target you are focussing on. I bought these as a powerful set for sky watching, birding, and general scenery when walking and holidaying. Though bulky they are worth carrying for the quality and depth of the image that is available. Easily backpackable. I live in a city and it is amazing the way on a CLEAR night they cut through the haze that is there (but not visible) and allows you so see a complete vista of stars that are not available to the naked eye. I wish I could have afforded the 25x100, but for that cost I will supplement it and buy myself a good telescope. These are fantastic powerful general purpose binoculars and can be used for sky watching WITH a tripod, dont believe reviews that say you dont need it. Great Value. Recommended. I wish they had provided a better padded carry bag.

I thought that the magnification is really good

First thing first, delivery service, packaging was great.This is my first binoculars ever. So I can't say if this piece is completely out of collimation (will give updates once I check).Pros:1. Well built.2. Fully multicoated optics.3. Value for money.4. Best for beginners in Astronomy.Cons:1. Quality of the bag provided is not good. (substitute would be a DSLR camera backpack and it will do the job).2. Collimation could be a problem. (Almost all heavy binos have this error). You can fix it yourself or could ask for a replacement.In detail:-1). You cannot get this quality at this price. Compare with ORION 20X80 --- which is around ₹ 25k.2). If you cannot decide about getting 20X80 or other smaller binos then I would say 20X80 would be better. It has a larger objective of 80mm which increases your limiting magnitude to approx +7(with naked eyes your limiting magnitude is around +1). That's a huge difference. You will be able to see most of the messier objects and other DSOs apart from Moon, planets, and Orion nebula.3). It is literally a pair of two small telescopes😉. A telescope equivalent to these binoculars will be above ₹ 30k (trust me), So this is a great deal.Some important points:1). You can adjust the interpupillary distance. (As any other binoculars have)2). You can adjust the dioptre setting (for individual focus adjustment for eyes) by rotating the right eye piece. (please Google for more information)3). Centre focus wheel is given. ( For focusing at different distances)(All above three adjustments could be stiff in the starting)Suggestion for Tripod:1). A fluid head tripod is a must (for smooth and precise maneuvering of binoculars).2). Tripod must be heavy (to keep binoculars steady/ 20X magnification is too much).3). A branded tripod is not required.4). I will suggest getting a tripod from a photo store. (If it's in your budget then Manfrotto fluid head tripod will be the best)An Update:1). Saturn's ring is visible. It will need a nice focus and patience.2). The object should be at the center of the field of view to avoid chromatic abrasion.3). Four of Jupiter's moon are visible. You can not make out the Great Red spot.4). After watching planets for an hour, I found my binoculars are perfectly collimated.5). Bright objects (-2 magnitude or higher) will give chromatic abrasion.6). You will be able to see stars as dim as +8 magnitude in a light-polluted sky.7). Andromeda galaxy will cover your entire field of view on a very dark night.8). Many DSOs around the Sagittarius constellation are visible from these binoculars.9). The field of view is around 2.6° and not 3.7° as mentioned.10). The moon looks breathtakingly beautiful. It will appear three dimensional with these giant binoculars. You can make out Apollo missions' landing sites to a precision of few kilometers.11). Orion Nebula will be visible bright and crisp. Your field of view will be contain just the Orion sword.12). If you are willing to do astrophotography using these binoculars then you will need a smartphone adapter for binoculars (just search for it and you will find it on amazon) and a photo staking software - DeepSkyStacker which will stack together hundreds of shots of a DSO and after few hours of processing, you will get a bright and detailed astrophotograph.13). Neptune and Uranus are visible just like a dot but you can make out their color.Best at this price!!Clear skies!!

O que dizer de um binóculos que traz as maravilhas do céu até seus olhos?Alguns meses atrás comprei um 7x50 da mesma marca e após varrer boa parte do céu, senti a necessidade de um upgrade. Apesar de o 15x70 ser mais barato, resolvi ir de vez atrás de um maior e deparei com esse 20x80.Arrependimento? Apenas com o tempo de espera até chegar, passou pouco mais de 1 mês até ter em mãos.Já o binóculos em si é sensacional, não tem comparação com meu 7x50 quanto à observação do céu. Obviamente não é possível ver detalhes dos planetas, mas Titã é visível, Saturno aparece como uma luz alongada e Júpiter é majestoso com seus maiores satélites, imponente no campo de visão! Notam-se muitas crateras e montanhas na Lua com uma qualidade incrível!Além disso é possível ver também aglomerados estelares, nebulosas e algumas galáxias, porém dependem pelo menos de um céu rural. Falando em nebulosas, a Carina e a de Órion são as mais lindas para se ver, na minha opinião.Para se ter uma ideia do que é possível enxergar, no centro de onde moro cheguei a identificar, com muito custo, estrelas até da magnitude +10.2, sendo mais fácil identificar até mais ou menos +9.5. Já objetos menos densos, como nebulosas e cometas, dependem muito da poluição luminosa e não chegam a tal magnitude.Como nem tudo é perfeito, há alguns pontos negativos:1° - a aberração cromática é bem forte nos objetos mais brilhantes, mas não chega a comprometer a experiência.2° - por mais que na embalagem diga que serve para visualização terrestre de longa distância, não gostei da falta de nitidez nos morros ao longe. Nesse quesito ainda prefiro meu 7x50.No geral, é um equipamento indispensável e ótima alternativa aos telescópios baratos. Mas tenha em mente que é praticamente exclusivo para astronomia.

When I received it the collimation was off. Rather than send it back and risk getting another pair that was off, I called Celestron. The "Life Time No Fault Warranty" only applies if you get it from an "authorized" dealer even though my pair was new. Which means you need to pay like $200+ for these to actually have a warranty. However I asked if I could collimate it myself even though the manual says it should only be done by a professional with specialized tools. They could not or would not tell me anything about how to collimate it. Luckily I did find some general instructions on the web and found the prism tilt screws to turn and got it perfect. You need to gently pry back the edge of the rubber hand grips to access the screws. The whole process wasn't even that difficult! I don't know why it has to be such a state secret with Celestron. Since then the binos have been wonderful and well worth the discount of buying from an "unauthorized dealer".Thank you, Gary, for your tip about collimating. These binoculars were terrible when I first looked through them, and nothing I could do would solve the problem. (My eyes could not focus together and I saw double images.) The barrels appeared to be misaligned, and I was going to send them back. Then I read Gary's review (Collimation Easily Done) and thought, "What the heck? I can at least try." I followed Gary's instructions and easily fixed the problem within minutes. They work really well now, but I'm giving them a four-star rating since Celestron really should tell the consumers how to fix this problem by themselves without having to pay someone else to do it. To add to Gary's tip: You'll need a tiny flat-head screwdriver (like what you use to repair eyeglasses) in order to adjust them. The hand grip (that portion on the top of each barrel of the binoculars) only needs to be pulled back a little ways until the screw is exposed, and you only need to adjust the side that's off. (It should be obvious which side is off or if both sides are off. Close your left eye and then your right while looking through the binoculars.) Check the binoculars (by looking through them) each time you make an adjustment until you have it perfect. It can be done, and it's well worth it!Thanks to all who responded for your kind advice.I experimented after all and found it incredibly easy to collimate the Celestron Skymaster 20X80.By carefully peeling away the rubber lining on the handgrips from the top, nearest the focussing wheel, the collimation screws are revealed at about 11 o' clock and 1 o' clock. I then mounted the binos on a tripod and focused on a bright star (it happened to be Achernar) and while looking through the binoculars, made minute adjustments on the screws until the images through the two lenses merged and voila! For the first time I could clearly see the four moons of Jupiter in perfect focus through these binos!