APT Darkness Clock

Knowing when to image/observe

Free · Designed for iPad

Knowing the right time to image/observe and see the Moon phase for selected night and location. APT Darkness Clock (APT DC) is a free app without ads, that calculates the suitable time for deep sky astrophotography or observing in selected night and location. It is a small sub-set of a full featured desktop application named APT - Astro Photography Tool. APT is like Swiss army knife for your astro imaging sessions. No matter what are imaging with - Canon EOS, Nikon, CCD or CMOS astro camera, APT has the right tool for planning, collimating, aligning, focusing, framing, plate-solving, controlling, imaging, synchronizing, scheduling, analyzing, monitoring and more. You can find additional information about APT at www.astroplace.net. To image or observe a faint deep sky objects is needed to use the darkest time of the night. This is the time between the evening astro twilight end, the morning astro twilight beginning and when the Moon is below the horizon. In APT that time is named DSD Time - Deep Sky Darkness Time. The purpose of APT DC is to calculate what is the DSD Time duration and when this time starts/ends for selected night and location. It is possible to use the current location or one of three other stored observing sites. For suggestions and support related to APT DC, use the dedicated section of the APT Forum at - http://aptforum.com/phpbb/viewforum.php?f=26

  • 5.0
    out of 5
    4 Ratings

This app has been updated by Apple to display the Apple Watch app icon. -Added the Moon phase visualisation for the selected night -More detailed legend for the displayed values -Fixed a bug in the automatic Daylight Saving Time calculation

The developer, Ivaylo Stoynov, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

  • No Details Provided

    The developer will be required to provide privacy details when they submit their next app update.

    The developer has not yet indicated which accessibility features this app supports. Learn More

    • Seller
      • Ivaylo Stoynov
    • Size
      • 1.5 MB
    • Category
      • Reference
    • Compatibility
      Requires iOS 10.0 or later.
      • iPhone
        Requires iOS 10.0 or later.
      • iPad
        Requires iPadOS 10.0 or later.
      • iPod touch
        Requires iOS 10.0 or later.
      • Mac
        Requires macOS 11.0 or later and a Mac with Apple M1 chip or later.
      • Apple Vision
        Requires visionOS 1.0 or later.
    • Languages
      • English
    • Age Rating
      4+
    • Copyright
      • © Distinct Solutions Ltd., Incanus Ltd.