We are searching for the best model to purchase for a deck view….we just purchased a home in Panama and want to be able to see the island where our son fishes which is about 46-50 miles …34 by land and 12 by sea – I was looking at telescopes when I found you on a google search. Do you have a model that would see that far that is on a mount …and not for the “professional”?? Thank you.
One of our Long-Range Observation binoculars would be the best choice for long distance viewing. Using both eyes adds perspective and depth perception to the view, while a telescope presents a very “flat” view. These are truly the world’s most powerful binoculars, however, 45-50 miles is very distant, and the curvature of the earth over that distance will come into play. If you are standing on the beach looking out over the water, the horizon is only 3 miles away due to the curvature of the earth. You have to be standing higher than sea level and/or your target must be higher than sea level to be able to see farther than 3 miles. There is a formula to determine how far the horizon is, based on the observer’s height above sea level. The formula is Distance (in miles) = 1.2246*SQRT(Height in feet). So let’s assume your deck is 200 ft. about sea level. The square root of 200 is 14.14. Multiply that by 1.2246, and you get 17.3 miles.
Of course you’ll still want the binocular for your deck view, but unless you’re particularly high up, and/or there are features on the island that are very tall, you probably won’t be able to see the island simply due to earth’s curvature. Let me know if you have any questions, I’m happy to answer them.
This is super! We are actually at 4200 ft. above sea level. Don’t know how to do that square foot thing…but knowing the altitude and the distance to the sea (35) miles…Island is about 12 more miles….what is your recommendation for binoculars…also would be great to look at stars too…but would love to know the distance. What do you think?
From that height, the horizon is 79 miles away. Over that distance, you’ll need perfect atmospheric conditions to get a really clear view- so some days will be better than others.
The 25/40×100 Long-Range Observation binocular that I mentioned earlier would be great for this. But if you are interested in binocular astronomy, as well as looking out across the water, you should consider our BT-100-45. It has 45-degree viewing, which is much more comfortable for your neck when viewing the night sky. When viewing to the horizon, you’ll be looking down into the binocular at a 45-degree angle- but that’s quite comfortable. It also means the binocular can sit lower on the tripod, and is more accommodating of people of different heights. Just set the tripod height for the shortest person, and taller people can just bend over a bit more to view through it. The BT-100-45 is also capable of even greater magnification than the 25/40×100 using our optional 75x eyepieces. But note that these binoculars are not weatherproof. You should set this up indoors looking out through a big window to your view. Take it outside only in nice weather, and for night sky observation of course. Let me know if you have more questions.