How long does it take to photograph the surface of earth with one satellite at a resolution similar to that used in Google maps (satellite view)?
In order for a single satellite to gather all the necessary images, it would need to be in a polar or near-polar orbit. To provide the desired resolution, most imaging satellites are in low Earth orbit (LEO) at 250-650 km. That means their orbit is around 90 minutes in length. At that altitude, an image swath covers about 18 km in width.That is going to become very inefficient at the equator, where the circumference of the Earth is 40,075 km. That means it would take a minimum of 2227 swaths to cover the equator. At two equator passes an orbit, that would be 1114 orbits or 70 days. Then we have to add in the complication that for the images to be useful on Google maps, they need to be taken when the sun is high in the sky over that location. Let's say that gives us a four-hour window for each location. That would easily turn that 70 days into 420 days. Then add the complication of weather. Let's say we have a 50% chance of clear sky per location. Now we're at 840 days.Next we have to account for the limited onboard storage available to a satellite. Imaging satellites gather data in batches that they downlink when they have good X-band comm, before gathering the next batch. In reality it would take much more, because remember that the world is turning below the satellite. Each time that satellite crosses the equator, the Earth below has moved 1252 km. We can't just move 18 km east or west each orbit.Here is an example ground track for a near-polar orbit satellite. This satellite has full global coverage by having a 3300 km swath. That's too much for the images we need. We would need to make periodic adjustments to our orbit to shift the ground track. I think it's pretty clear that mapping the Earth to Google map standards with one satellite is a long term and burdening task. Imaging satellites are usually designed to focus on specific regions of the Earth and use sun-synchronous orbits to maximize their daylight for those regions.Google buys their images from about half a dozen different sources and each of those sources has multiple sources by which they acquire their images.One of the most capable satellites that does this work is WorldView-3. A WorldView-3 satellite has a capacity of 680,000 square kilometers per day. The Earth has a surface area of 510,100,000 square kilometers. So, if it theoretically had full Earth coverage, no repeating images, and perfect weather, it could map the Earth to Google standards in 750 days.
Can I take photographs inside a cemetary?
I've taken a lot of photographs in cemeteries (including my 360 background) . Most are open to the public from sunrise to sunset . I've never had a problem. Taking photos is not damaging property or disrespectful so don't worry about it. Most bigger cemeteries have rules posted somewhere but it's mostly "do not walk your dog here" or what ever. Smaller/older cemeteries are sometimes privately owned but it should still be okay as long as it doesn't say "no trespassing". If someone says something (which has never happened to me and I've been in many,many cemeteries) just respect their wishes and move on. You won't get in trouble as long as you follow any posted signs. Obviously not while their is a funeral going on, or of other people who are paying their respects. Some cemeteries from the Victorian times were designed as beautiful park like places for people to stroll through and are very peaceful. Some people get too sensative and morbid about cemeteries and their is really no need for it. People only get in trouble in cemeteries when they are partying or doing rituals after dark. I know of a cemetery that got such a bad rap for stupid kids doing "satanic rituals" in it that nobody in the town will talk about it because it attracts disrespectful people. I've been to it and it's not creepy or anything like all the stories people make up about it. Just be considerate and you'll be fine.
Getting into photography?
Hey I wanna get into photography. Its a bit overwhelming but my goal is to become a pro in a month or 2. I already have a camera so that should help. What websites or videos could help me understand editing software like light room/photoshop? Also a guide to taking amazing photos, setting up studios and understanding the equiptments necessary. Thank you so much!
Is it legal to photograph banks?
I have included a link that should be helpful. A bank is private property which means you can't go inside and do whatever you want - including photography. Standing on public property (like a sidewalk) is diffferent. You can photograph anything you can see. You cannot obstruct other people while doing it, however, like setting up a tripod that gets in people's way. Bank security might not like you making pictures of the bank, but that's too bad for them if you're on public property. They can't legally make you stop, you go away and they certainly can't take your camera or make you erase your pictures. If confronted, take out the print of your rights from the link, below. Heck, bring two copies with you so any one bothering you has a copy to keep for themselves. Be friendly, smile, explain that you're a hobby photographer and this is a personal project to photograph the banks of your city. Don't act like a jerk. But be firm as well. You are free to photograph what you want from public property for your own personal, private use. Disclosure: I am the owner of http://www.lenslenders.com in Canada.
What do they say in Sweden when taking a photo?
We’re quite international by now so, cheese will work. Other sayings are “omelett” as in omelette, “smajl” as in smile can work, if you’re dealing with younger kids or just childish persons you could ask them to say “kamelskit” as in camel poo (that’s the most fun in my book, but I’m also quite childish :P ).
Is it legal to photograph a car in someone's driveway?
If it is visible without going onto his property, or he parks it in a public place there is no expectation of privacy, no trespassing, and you can snap away. You can take photos of people in public places so you can certainly take photos of cars.
How can I approach a stranger to take their photo?
I consider myself an amateur photographer, but I've always had the issue of asking to take a photo of a stranger I see on the street. Next month my family and I are going to NYC for a few days and I'm sure there will be many interesting people on the streets with us. Is there some way I can ask a stranger to get a photo of them? I'm afraid they'd be weirded out by me just asking for a photo. The thing is, I'm shy. Please help, thank you! :)