Welcome to Phoranso, the Photometric Reduction and Analysis Software.


Phoranso streamlines your photometric analysis process and unfolds your light curves while you're observing.


Crafted by Tonny Vanmunster, author of the Peranso period analysis software, Phoranso embodies 30 years of photometric expertise. With over 2 million high-precision exoplanet and variable star observations to his name, Tonny has pioneered a groundbreaking solution, elevating Phoranso to unrivaled heights as the definitive choice for Photometric Reduction and Analysis Software in the market. 


Phoranso offers a wealth of uparalleled capabilities:


  • Multi-star aperture photometry, allowing to measure all variable stars present in your FITS images in one step, seamlessly generating photometric reports in AAVSO, CBA, CSV and Excel formats


  • Auto-detection of all AAVSO VSX variable stars present in your FITS image



  • Automatically generate light curves for multiple star aperture settings (multiple ringsets) in one step


  • Launch Phoranso at the beginning of your observing session and experience the magic as it swiftly generates photometric reports for variable stars captured in your FITS images, by the session's end. This feature is part of the Live Photometry mode


  • Witness the unfolding of your light curves in real-time during image acquisition or while photometry is ongoing, empowering you with instant insights. This feature is part of the Live Photometry mode


  • Phoranso uses an intelligent Variable Star Database, allowing you to enter your variable star and calibration stars information just once. Phoranso will memorize them for future usage in a so called ID Card, avoiding you have to repetitively re-enter the same data and ensuring consistency in your calibration stars even over extended periods of time


  • Phoranso integrates an advanced astrometric solver that delivers exceptional accuracy and performance, using the Gaia DR3 catalogue. It also supports the free ASTAP solver and the commercial PinPoint solver (both 32-bit and 64-bit versions).


  • Phoranso provides a seamless end-to-end photometric pipeline: it takes your science (raw) images, performs automatic bias-dark-flat image calibration and solving, and extracts photometric information, all in one streamlined step. Say goodbye to the hassle of using multiple tools


  • Phoranso sets the bar high with its focus on photometric accuracy and user-friendly experience, establishing itself as one of the most productivity-driven photometry packages in the market. It integrates the UCAC4 and APASS DR10 photometric catalogs.


  • Phoranso supports both regular differential photometry using one reference star, and Ensemble Photometry using multiple reference stars


  • Phoranso offers robust scripting capabilities enabling effortless integration in your existing tools and workflows

  • Phoranso effortlessly transfers target light curve data to the Peranso Light Curve and Period Analysis software with a single button click for in-depth analysis


  • Phoranso offers a high level of compatibility with LesvePhotometry, a photometry software for time-series reduction, allowing you to import all of your LesvePhotometry star sequences in a single step


  • You can start and stop your Phoranso photometric analyses at any point in time, and resume right where you left off, without the need to reprocess images


  • Phoranso strongly supports multi-tasking, allowing you to concurrently launch multiple photometry sessions (e.g., with images from multiple nights). While photometry is running in the background, you can work on other Phoranso tasks, such as image calibration

  • Phoranso is able to work with a wide variety of FITS files, supporting pixel values of 8-bit, 16-bit, 32-bit and 64-bit. It also supports Bayer Color FITS files, and will automatically convert them to greyscale images.