Convert FTS Image Free

How to Convert Files

Convert FTS FITS astronomy images to and from viewable formats in your browser, with all processing done locally on your device.

What an FTS file holds

FTS is a file extension for FITS, the Flexible Image Transport System, the standard data format of professional astronomy. A FITS file stores scientific image data together with an extensive, human-readable header of keyword and value pairs describing the observation.

That header is central to the format: it records details such as the telescope, the exposure, the coordinates, and the calibration, so the numbers in the image can be interpreted correctly years later. FITS supports high bit depths and floating-point values, because astronomical detectors capture a far wider range of brightness than an ordinary photograph.

Strengths and limits

FITS is built for scientific integrity: it preserves the full precision of detector data and carries rich, self-documenting metadata, which is why it has been the astronomy standard for decades and remains widely supported by research software.

For everyday viewing it is impractical. Files are large and uncompressed, the high dynamic range needs scaling before it looks right on a normal screen, and general image software rarely reads it. Presentation images are converted to a standard format after the science is done.

History of FTS

FTS originated in the 1970s as an extension of the FITS format, developed by the astronomy community, notably by NASA and the International Astronomical Union (IAU). It addressed the need for a standardized way to store and share high-precision astronomical data, enabling consistency across various research institutions. The initial adoption was primarily within NASA and observatories, which facilitated its spread through collaborations and data sharing.

In the following decades, FTS evolved alongside advancements in imaging technology and data analysis. The format became integral to major astronomical projects, such as the Hubble Space Telescope. Standardization efforts were led by organizations like the IAU, which established guidelines for FITS, ensuring compatibility and interoperability within the scientific community. Various software tools emerged to support FTS, further embedding it in the workflows of astronomers and researchers worldwide.

Using FTS Effectively

Choose FTS when high precision and extensive metadata are critical for your astronomical data. It is ideal for storing images from telescopes and detectors where data integrity must be maintained. FTS is particularly useful in environments where collaboration and data sharing are common, as its standardized format ensures compatibility across different platforms and software. Avoid using FTS for general-purpose image storage where file size and processing speed are prioritized over metadata richness.

When converting to or from FTS, ensure that the software you use supports the FITS standard to avoid data loss. Be aware of potential compatibility issues with legacy systems that may not handle the latest FITS extensions. When working with FTS files, consider using libraries like CFITSIO or Astropy, which provide robust tools for reading and writing FITS data. Always verify that the metadata is preserved during conversion to maintain the scientific integrity of your data.

Working with FTS files

You will meet FTS and FITS files when working with astronomical data, telescope archives, or scientific imaging tools that follow the FITS standard.

For analysis, keep the data in FITS to preserve its precision and metadata, using astronomy software to open it. To share a picture, apply a brightness scaling and convert to PNG, accepting that the visible image is a display-ready rendering of much richer data.