NightSkyToolbox is a handy utility for every astrophotographer. On the first tab it provides information about the longitude and latitude of your current position, Greenwich and local mean sidereal times and Julian date.
On second tab you can find the polaris local hour angle with the rotated polar finder reticle image.
On the third tab is the Field-of-View and resolution calculator for all of your telescopes and cameras. You can choose from the list of commonly used telescopes and cameras or name and specify your own records.
In Settings you can choose to operate the application in the black & red night mode.
To run NightSkyToolbox you need iOS 6.0 or later.
If you are using iPhone take a look at the iINDI Control Panel application. Read more »