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FITS at a glance
FITS
FITS became a durable scientific standard because observatories, spacecraft, and analysis tools needed a stable interchange format that outlived individual instruments and software stacks.
VDA at a glance
VDA
The Truevision line grew out of EPICenter-era PC graphics boards, and several board names ended up surviving as filename extensions even when the underlying raster structure stayed close to the wider TGA family.
Format comparison
| Feature | FITS | VDA |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1981 | 1987 |
| Inventor | NASA / astronomical data community | Truevision |
| Status | active | active |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Layer support | Not supported | Not supported |
| Vector scaling | Not supported | Not supported |
| Camera raw data | Not supported | Not supported |
| HDR support | Not supported | Not supported |
| Streaming ready | Not supported | Not supported |
When to use each format
When to use FITS
- Your source file is already in FITS.
- Preserve source expectations before exporting to VDA.
- FITS is commonly used in image workflows.
When to use VDA
- Your target workflow expects VDA.
- Improve delivery compatibility with VDA.
- VDA is commonly used in image workflows.
FAQs
Why convert FITS to VDA?
Convert to VDA when recovering or preserving historical Truevision-era graphics assets, or when normalizing a legacy image collection before moving it into PNG, TIFF, or another contemporary raster format.
What changes when converting FITS to VDA?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting FITS to VDA?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.