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Latest News

An update to Deep-Sky Planner 8 was released 10 March 2023.

An update to Deep-Sky Planner Mobile Edition was released 21 January 2023 for Android and iOS/iPadOS

An update to SQM Reader Pro 3 was released 11 October 2022.

Free Software

Deep-Sky Planner 8 Trial Edition is available now. Download it here.

KnightVision adjusts your computer's video for 'night vision'.
Download it here.

SQM Reader reads Sky Quality Meters.
Download it here.

Astronomy Software by Knightware

Makers of Deep-Sky Planner & SQM Reader Pro Astronomy Software

Watch our latest
Deep-Sky Planner Webinar

Deep-Sky Planner webinar

Visit the Video Library

Deep-Sky Planner Awards

2014 hot products


Deep-Sky Planner astronomy software


Knightware produces astronomy software for stargazing. The flagship product, Deep-Sky Planner for Windows, helps imagers and visual observers plan and record their observations. A large database, telescope control, planetarium program interoperation and extensive reporting capabilities are included. Upgrade your stargazing now! Learn more here. Deep-Sky Planner Mobile Edition is also available to help planning visual observations and imaging. Learn more here.

Deep-sky Planner video library See the Deep-Sky Planner 8 (Windows) Introduction video  

Learn about Deep-Sky Planner Mobile Edition for Android, iPhone and iPad.

Deep-sky Planner video library See Deep-Sky Planner Mobile Edition Getting Started video

SQM Reader astronomy software allows owners of Unihedron's Sky Quality Meter to acquire darkness readings using the meter's USB or ethernet port and store them to a file. SQM Reader Pro adds extended data storage options, graphing, scripting and FTP capability. Learn more here.

Astronomy Software Products

astronomy software Deep-Sky Planner
available by digital delivery

Deep-Sky Planner 8
Observation Planning and Logging Software for Astronomers
Learn more...

buy Deep-Sky Planner

Read the latest review.

Deep-Sky Planner Mobile Edition
(DSPME) for Android and iOS

Click for the Android App


App Store
Click for the iOS/iPadOS App

astronomy software SQM Reader Pro
available by digital delivery

SQM Reader Pro 3
Supports SQM models LE (Ethernet), SQM-LU & LU-DL (USB) &LR (RS-232)
Learn more...

buy SQM Reader Pro

Deep-Sky Planner and SQM Reader Pro are protected by United States copyright laws and international treaties. All copyrights are owned by Knightware, LLC and/or Phyllis K. Lang, and are registered with the United States Copyright Office.

Deep-Sky Planner is a trademark of Knightware, LLC.
SQM Reader Pro is a trademark of Knightware, LLC.