Mars Atlas 4+

Everyone can enjoy all of these atlases as works of art as well as reliable references. They are easy to use and fill the needs of astronomers of all ages. They are well worth the modest fee. It’s an investment in program improvements, and hopefully the creation of atlases for other planets.

I'm an astrophotographer who's been capturing high resolution photos of Mars with my telescope and webcam. The Mars Atlas app has helped me enormously to identify specific features in my images such as Candor Chasma and Valles Marineris. I especially like the identification of very small features like Airy Crater which measures only 25 miles wide. Also the app provides a longitude and latitude grid with numerical values which helps in knowing exactly where one is for any selected time. One can flip the image so that North or South is up and turn the labels and long/lat grid on or off. One may choose a real time update so that the globe rotates slowly with the passage of time or one may freeze the time at any user selected day, hour, and minute. The view of Mars can be chosen as the planet would be seen from Earth or as a freely rotable globe. The phase of Mars may be turned on or off. This app was worth every penny and offers great educational value.

Pete

Again, just what I was looking for. Same great format as Moon Atlas. Beautiful to look at and use. I especially love the spacecraft locations. Well worth the price. Apps like this are what makes iPhone the best. Thanks for the terrific app!