# seiza-cli
The `seiza` command-line tool: star detection, hinted and blind plate
solving, and star/object dataset management for astrophotography. The
library lives in the [seiza](https://crates.io/crates/seiza) crate.
```
cargo install seiza-cli
```
## Solving
```
# Hinted: approximate center (or FITS RA/DEC headers) plus pixel scale
seiza solve image.jpg --data stars.bin --ra 324.8 --dec 57.5 --scale 2.8
seiza solve light.fits --data stars.bin --scale 1.45
# Blind: no position, just a plausible scale range
seiza solve-blind image.jpg --data stars.bin --min-scale 0.5 --max-scale 15
# Annotate detections or list objects in a solved field
seiza detect image.jpg --annotate out.png
seiza solve image.jpg --data stars.bin ... --objects objects.bin
# Query objects when sky bounds are already known; no image or solve needed
seiza catalog objects --data objects.bin --ra 10.6848 --dec 41.2691 --radius 3
seiza catalog objects --data objects.bin \
--corner 8.91,42.14 --corner 12.47,42.02 \
--corner 12.31,40.35 --corner 9.02,40.46 \
--sort prominence --format json
# Resolve exact IDs/names or complete names; no image, solve, or network needed
seiza catalog object --data objects.bin "M 31"
seiza catalog object --data objects.bin "openngc:NGC224"
seiza catalog object --data objects.bin "andro" --prefix --limit 10
seiza catalog star --data stars-lite-tycho2.ids.bin "TYC 5949-2777-1" --format json
seiza catalog star --data stars-lite-tycho2.ids.bin "HIP 32349"
seiza catalog star --data stars-lite-tycho2.ids.bin "RR Lyr"
seiza catalog star --data stars-lite-tycho2.ids.bin "STF 2382 AB"
seiza catalog star --data stars-lite-tycho2.ids.bin "RR L" --prefix --limit 10
```
`catalog objects` accepts a cone or a convex polygon whose vertices are in
boundary order. It can filter by object kind, magnitude, angular size, and
common-name availability; results can be emitted as a table, JSON, or CSV.
JSON and CSV include primary and alternate stable IDs, primary and contributing
source provenance, aliases, and parent IDs when the catalog provides them. The
prominence score is a catalog-based prediction, not proof that the object is
visible in the image pixels.
`catalog object` resolves primary/common names, aliases, and stable or
alternate IDs. Both object viewport queries and name completion use indices
embedded in the memory-mapped `objects.bin`; normal open does not decode every
record or touch every index page.
## Use with N.I.N.A.
seiza speaks ASTAP's CLI contract: set N.I.N.A.'s plate solver to ASTAP
and point the ASTAP path at the seiza binary (a copy named `astap.exe`
also works). Provide a star catalog via the `SEIZA_STAR_DATA`
environment variable or a `stars-*.bin` next to the executable —
`seiza download-data prebuilt` fetches one. Hinted and blind-slot
solving both work; see the repository's `docs/design/astap-mode.md`.
## Datasets
The quickest route is the prebuilt, SHA-256-verified set hosted at
downloads.seiza.fyi (Tycho-2 and Gaia solver tiles, the blind index, the
unified object catalog, minor bodies, the
Tycho/Bright Star/GCVS/WDS/IAU identifier sidecar, and a nightly-refreshed
transient list):
```
seiza download-data prebuilt --output data
seiza download-data prebuilt --output data --file objects.bin --file transients.bin
```
The downloader reads one complete bundle from `/data/v2/manifest.json` and
writes its files into the same flat local output directory. It never combines
catalogs from different hosted bundle versions. The unversioned `/data/`
manifest and files remain temporarily as the classic v1 compatibility surface
for older clients.
Building from primary sources stays supported for custom depths, epochs,
or tile granularity — note the Gaia TAP download alone can take many
hours:
```
seiza download-data tycho2 --output raw/tycho2
seiza download-data star-identifiers --output raw/star-identifiers
seiza build-data tycho2 --input raw/tycho2 --output stars-lite.bin \
--identifier-index stars-lite.ids.bin \
--identifier-sources raw/star-identifiers
seiza download-data gaia --output raw/gaia # Gaia DR3 via TAP, resumable
seiza build-data gaia --input raw/gaia --output stars-gaia.bin
seiza download-data objects --output raw/objects
seiza build-data objects --input raw/objects --output objects.bin \
--source-manifest objects.sources.json
seiza download-data transients --output raw/transients
seiza build-data transients --input raw/transients --output transients.bin
```
The optional source manifest records the output hash and size, metadata
coverage counts, source URLs, and hashes of every raw catalog file used.
The optional identifier sidecar provides memory-mapped exact TYC/HIP/HR/HD/
SAO/FK5 lookup plus exact and prefix search over IAU proper names,
Bayer/Flamsteed names, GCVS variables, and WDS double-star designations. It
does not change the solver's compact star tile file.
Normal catalog opens do not perform exhaustive validation. Validate any seiza
star tile, identifier sidecar, blind index, object catalog, or minor-body
catalog explicitly when required; the file format is auto-detected:
```
seiza catalog validate --data stars-lite.ids.bin
seiza catalog validate --data stars-lite.bin
seiza catalog validate --data objects.bin
```
FITS files are read natively (see
[seiza-fits](https://crates.io/crates/seiza-fits)) with bounded-memory
streaming into the final typed pixel buffer, automatic autostretch before
detection, and RA/DEC hints taken from headers.
## License
Apache-2.0