catalog

Documentation

Index

• type Catalog
• type CatalogService
  • func NewCatalogService(catalog Catalog, params Params) *CatalogService
  • func (c *CatalogService) PerformRadialSearch(eq astrometry.ICRSEquatorialCoordinate, radius float64) ([]Source, error)
• type GAIAQuery
• type GAIAServiceClient
  • func NewGAIAServiceClient() *GAIAServiceClient
  • func (g *GAIAServiceClient) PerformRadialSearch(eq astrometry.ICRSEquatorialCoordinate, radius float64, limit int, ...) ([]Source, error)
• type Params
• type SIMBADQuery
• type SIMBADServiceClient
  • func NewSIMBADServiceClient() *SIMBADServiceClient
  • func (s *SIMBADServiceClient) PerformRadialSearch(eq astrometry.ICRSEquatorialCoordinate, radius float64, limit int, ...) ([]Source, error)
• type Source
• type SourceAsterism

Types

type Catalog

type Catalog int

const (
	GAIA Catalog = iota
	SIMBAD
)

type CatalogService

type CatalogService struct {
	Catalog   Catalog
	Limit     int
	Threshold float64
}

func NewCatalogService

func NewCatalogService(
	catalog Catalog,
	params Params,
) *CatalogService

func (*CatalogService) PerformRadialSearch

func (c *CatalogService) PerformRadialSearch(
	eq astrometry.ICRSEquatorialCoordinate,
	radius float64,
) ([]Source, error)

type GAIAQuery

type GAIAQuery struct {
	RA        float64 // right ascension (in degrees)
	Dec       float64 // right ascension (in degrees)
	Radius    float64 // search radius (in degrees)
	Limit     int     // maximum number of records to return
	Threshold float64 // limiting magnitude
}

type GAIAServiceClient

type GAIAServiceClient struct {
	*adql.TapClient
	Query GAIAQuery
}

func NewGAIAServiceClient

func NewGAIAServiceClient() *GAIAServiceClient

Gaia DR3 service handler. The five-parameter astrometric solution, positions on the sky (α, δ), parallaxes, and proper motions, are given for around 1.46 billion sources, with a limiting magnitude of G = 21.

func (*GAIAServiceClient) PerformRadialSearch

func (g *GAIAServiceClient) PerformRadialSearch(eq astrometry.ICRSEquatorialCoordinate, radius float64, limit int, threshold float64) ([]Source, error)

type Params

type Params struct {
	RA        float64
	Dec       float64
	Radius    float64
	Limit     int
	Threshold float64
}

type SIMBADQuery

type SIMBADQuery struct {
	RA        float64 // right ascension (in degrees)
	Dec       float64 // right ascension (in degrees)
	Radius    float64 // search radius (in degrees)
	Limit     int     // maximum number of records to return
	Threshold float64 // limiting magnitude
}

type SIMBADServiceClient

type SIMBADServiceClient struct {
	*adql.TapClient
	Query SIMBADQuery
}

func NewSIMBADServiceClient

func NewSIMBADServiceClient() *SIMBADServiceClient

func (*SIMBADServiceClient) PerformRadialSearch

func (s *SIMBADServiceClient) PerformRadialSearch(eq astrometry.ICRSEquatorialCoordinate, radius float64, limit int, threshold float64) ([]Source, error)

type Source

type Source struct {
	UID                       string  `json:"uid" gaia:"source_id" simbad:"uid"`                   // Source ID (unique)
	Designation               string  `json:"designation" gaia:"designation" simbad:"designation"` // Source Designation
	RA                        float64 `json:"ra" gaia:"ra" simbad:"ra"`                            // Right Ascension (in degrees)
	Dec                       float64 `json:"dec" gaia:"dec" simbad:"dec"`                         // Declination (in degrees)
	ProperMotionRA            float64 `json:"pmra" gaia:"pmra" simbad:"pmra"`                      // Proper Motion in RA (in mas/yr)
	ProperMotionDec           float64 `json:"pmdec" gaia:"pmdec" simbad:"pmdec"`                   // Proper Motion in Dec (in mas/yr)
	Parallax                  float64 `json:"parallax" gaia:"parallax" simbad:"parallax"`          // Parallax (in mas)
	PhotometricGMeanFlux      float64 `json:"flux" gaia:"phot_g_mean_flux" simbad:"flux"`          // G-band Mean Flux (in e-/s)
	PhotometricGMeanMagnitude float64 `json:"magnitude" gaia:"phot_g_mean_mag" simbad:"magnitude"` // G-band Mean Magnitude (in mag)
}

type SourceAsterism

type SourceAsterism struct {
	A        Source
	B        Source
	C        Source
	Features geometry.InvariantFeatures
}