Deep-Sky Planner 9 was released 14 June 2024.

An update was released on 10 April 2026.

SQM Reader Pro 3 was released 29 June 2017.

An update was released on 24 August 2026.

Free Software

Deep-Sky Planner 9 Trial Edition was updated on 14 April 2026 and is available now by digital download.

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

Deep-Sky Planner Awards

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.

See the Deep-Sky Planner 9 (Windows) Introduction 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. Support has been added for GPS device BU-353N from GlobalSat. Learn more here.

Astronomy Software Products

available by digital delivery

Deep-Sky Planner 9
Observation Planning and Logging Software for Astronomers
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Read the latest review.

available by digital delivery

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

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.