JuliaAstro · icweaver · May 15, 2026 · May 15, 2026 · May 15, 2026
diff --git a/CITATION.cff b/CITATION.cff
@@ -1,8 +1,8 @@
 cff-version: 1.2.0
 type: software
-title: Spectra.jl
+title: SpectrumBase.jl
 message: If you use this software, please cite it using the metadata from this file.
-repository-code: 'https://github.com/JuliaAstro/Spectra.jl'
+repository-code: 'https://github.com/JuliaAstro/SpectrumBase.jl'
 authors:
   - given-names: Miles
     family-names: Lucas
@@ -11,5 +11,5 @@ authors:
   - name: JuliaAstro
     email: astro@julialang.org
     website: 'https://juliaastro.org'
-url: 'https://juliaastro.org/Spectra'
+url: 'https://juliaastro.org/SpectrumBase'
 license: MIT
diff --git a/Project.toml b/Project.toml
@@ -1,4 +1,4 @@
-name = "Spectra"
+name = "SpectrumBase"
 uuid = "391af1a9-06f1-59d3-8d21-0be089654739"
 version = "0.1.0"
 authors = ["Miles Lucas <mdlucas@hawaii.edu>"]

diff --git a/README.md b/README.md
@@ -1,11 +1,11 @@
-# Spectra.jl
+# SpectrumBase.jl
 
-[![](https://img.shields.io/badge/docs-stable-blue.svg?label=docs)](https://juliaastro.org/Spectra.jl/stable)
-[![](https://img.shields.io/badge/docs-dev-blue.svg?label=docs)](https://juliaastro.org/Spectra.jl/dev)
+[![](https://img.shields.io/badge/docs-stable-blue.svg?label=docs)](https://juliaastro.org/SpectrumBase.jl/stable)
+[![](https://img.shields.io/badge/docs-dev-blue.svg?label=docs)](https://juliaastro.org/SpectrumBase.jl/dev)
 
-[![CI](https://github.com/JuliaAstro/Spectra.jl/actions/workflows/CI.yml/badge.svg)](https://github.com/JuliaAstro/Spectra.jl/actions/workflows/CI.yml)
-[![codecov](https://codecov.io/gh/juliaastro/Spectra.jl/graph/badge.svg?token=EjMJcszaoQ)](https://codecov.io/gh/juliaastro/Spectra.jl)
-![GitHub](https://img.shields.io/github/license/juliaastro/Spectra.jl.svg)
+[![CI](https://github.com/JuliaAstro/SpectrumBase.jl/actions/workflows/CI.yml/badge.svg)](https://github.com/JuliaAstro/SpectrumBase.jl/actions/workflows/CI.yml)
+[![codecov](https://codecov.io/gh/juliaastro/SpectrumBase.jl/graph/badge.svg?token=EjMJcszaoQ)](https://codecov.io/gh/juliaastro/SpectrumBase.jl)
+![GitHub](https://img.shields.io/github/license/juliaastro/SpectrumBase.jl.svg)
 
 Utilities for interfacing with astronomical spectra and synthetic spectra libraries.
 
@@ -17,7 +17,7 @@ Utilities for interfacing with astronomical spectra and synthetic spectra librar
 
 Currently this package can only be installed from github. To do so, either clone this repository and install it or
 
-    pkg> add https://github.com/JuliaAstro/Spectra.jl
+    pkg> add https://github.com/JuliaAstro/SpectrumBase.jl
 
 from the `pkg` command line (Press `]` from Julia REPL)
 
@@ -33,10 +33,10 @@ julia --proj
 julia> import Pkg
 
 # List tests
-julia> Pkg.test("Spectra"; test_args = `--list`)
+julia> Pkg.test("SpectrumBase"; test_args = `--list`)
 
 # Run specific testsets by name. Will match with `startswith`
-julia> Pkg.test("Spectra"; test_args = `--verbose <testset name>`)
+julia> Pkg.test("SpectrumBase"; test_args = `--verbose <testset name>`)
 ```
 
 ### Docs

diff --git a/docs/Project.toml b/docs/Project.toml
@@ -6,7 +6,7 @@ Interpolations = "a98d9a8b-a2ab-59e6-89dd-64a1c18fca59"
 Measurements = "eff96d63-e80a-5855-80a2-b1b0885c5ab7"
 Plots = "91a5bcdd-55d7-5caf-9e0b-520d859cae80"
 Revise = "295af30f-e4ad-537b-8983-00126c2a3abe"
-Spectra = "391af1a9-06f1-59d3-8d21-0be089654739"
+SpectrumBase = "391af1a9-06f1-59d3-8d21-0be089654739"
 Unitful = "1986cc42-f94f-5a68-af5c-568840ba703d"
 UnitfulAstro = "6112ee07-acf9-5e0f-b108-d242c714bf9f"
 

diff --git a/docs/make.jl b/docs/make.jl
@@ -1,21 +1,21 @@
 using Documenter
-using Spectra
+using SpectrumBase
 using Unitful
 using Measurements
 using Revise
 
 Revise.revise()
 
-DocMeta.setdocmeta!(Spectra, :DocTestSetup, :(using Spectra); recursive = true)
+DocMeta.setdocmeta!(SpectrumBase, :DocTestSetup, :(using SpectrumBase); recursive = true)
 
-makedocs(sitename = "Spectra.jl",
+makedocs(sitename = "SpectrumBase.jl",
     format = Documenter.HTML(;
         prettyurls = true,
-        canonical = "https://juliaastro.org/Spectra/stable/",
+        canonical = "https://juliaastro.org/SpectrumBase/stable/",
     ),
     authors = "Miles Lucas and contributors.",
     linkcheck = !("skiplinks" in ARGS),
-    modules = [Spectra],
+    modules = [SpectrumBase],
     pages = [
         "Home" => "index.md",
         "spectrum.md",
@@ -29,8 +29,8 @@ makedocs(sitename = "Spectra.jl",
 )
 
 deploydocs(;
-    repo = "github.com/JuliaAstro/Spectra.jl.git",
+    repo = "github.com/JuliaAstro/SpectrumBase.jl.git",
     devbranch = "main",
     push_preview = true,
     versions = ["stable" => "v^", "v#.#"], # Restrict to minor releases
-)
+)
diff --git a/docs/old_docs/fitting.md b/docs/old_docs/fitting.md
diff --git a/docs/old_docs/utils.md b/docs/old_docs/utils.md
diff --git a/docs/src/index.md b/docs/src/index.md
@@ -1,4 +1,4 @@
-# Spectra.jl
+# SpectrumBase.jl
 
 Utilities for interfacing with astronomical spectra and synthetic spectra libraries.
 
@@ -11,9 +11,9 @@ Pages = ["index.md", "spectrum.md", "transforms.md"]
 From the REPL, press `]` to enter Pkg mode
 
 ```julia-repl
-pkg> add https://github.com/JuliaAstro/Spectra.jl
+pkg> add https://github.com/JuliaAstro/SpectrumBase.jl
 
-julia> using Spectra
+julia> using SpectrumBase
 ```
 
 ## Quick Start
@@ -23,7 +23,7 @@ Here is a quick demo of some of our features.
 ### Spectrum construction
 
 ```jldoctest guide
-julia> using Spectra, FITSIO, Unitful, UnitfulAstro, Plots
+julia> using SpectrumBase, FITSIO, Unitful, UnitfulAstro, Plots
 
 julia> # fitsurl = "https://dr14.sdss.org/optical/spectrum/view/data/format=fits/spec=lite?plateid=1323&mjd=52797&fiberid=12";
 
@@ -60,14 +60,14 @@ For constructing higher dimensional spectra, e.g., for echelle or IFU spectra, s
 If you found this software or any derivative work useful in your academic work, I ask that you please cite the code.
 
 ```
-@misc{Spectra.jl,
+@misc{SpectrumBase.jl,
   author = {Miles Lucas and contributors},
-  title  = {Spectra.jl: Utilities for interfacing with astronomical spectra},
-  url    = {https://github.com/JuliaAstro/Spectra.jl},
+  title  = {SpectrumBase.jl: Utilities for interfacing with astronomical spectra},
+  url    = {https://github.com/JuliaAstro/SpectrumBase.jl},
   year   = {2024}
 }
 ```
 
 ## Contributing
 
-Please see [Contributing](@ref contrib) for information on contributing and extending Spectra.jl.
+Please see [Contributing](@ref contrib) for information on contributing and extending SpectrumBase.jl.
diff --git a/docs/src/spectrum.md b/docs/src/spectrum.md
@@ -4,20 +4,20 @@ Here we will go over the different spectral types and how we use them.
 
 ## Types
 
-Spectra are defined as possible subtypes of `AbstractSpectrum`. You can use these directly for construction, or use the catch-all [`spectrum`](@ref) function, which is preferred.
+SpectrumBase are defined as possible subtypes of `AbstractSpectrum`. You can use these directly for construction, or use the catch-all [`spectrum`](@ref) function, which is preferred.
 
 ```@docs
-Spectra.AbstractSpectrum
-Spectra.Spectrum
-Spectra.SingleSpectrum
-Spectra.EchelleSpectrum
-Spectra.IFUSpectrum
+SpectrumBase.AbstractSpectrum
+SpectrumBase.Spectrum
+SpectrumBase.SingleSpectrum
+SpectrumBase.EchelleSpectrum
+SpectrumBase.IFUSpectrum
 ```
 
 ## Constructors
 
 ```@docs
-Spectra.spectrum
+SpectrumBase.spectrum
 ```
 
 
@@ -27,9 +27,9 @@ For more advanced transformations, see [Transformations](@ref)
 
 ### Getters
 ```@docs
-Spectra.spectral_axis(::AbstractSpectrum)
-Spectra.flux_axis(::AbstractSpectrum)
-Spectra.meta(::AbstractSpectrum)
+SpectrumBase.spectral_axis(::AbstractSpectrum)
+SpectrumBase.flux_axis(::AbstractSpectrum)
+SpectrumBase.meta(::AbstractSpectrum)
 ```
 
 ### Array interface
@@ -69,7 +69,7 @@ Unitful.ustrip
 We provide simple plotting recipes for spectra using [Plots.jl](https://github.com/juliaplots/plots.jl)
 
 ```@example
-using Plots, Spectra
+using Plots, SpectrumBase
 
 wave = range(1e3, 5e4, length=100)
 spec = blackbody(wave, 2000)

diff --git a/docs/src/transforms.md b/docs/src/transforms.md
@@ -5,7 +5,7 @@
 By leveraging [DustExtinction.jl](https://github.com/juliaastro/dustextinction.jl) we can apply common reddening laws to our spectra.
 
 ```jldoctest
-julia> using Spectra, Unitful, Measurements, Random
+julia> using SpectrumBase, Unitful, Measurements, Random
 
 julia> rng = Random.seed!(0);
 
@@ -66,4 +66,4 @@ External interpolators, e.g., from [DataInterpolations.jl](https://github.com/Sc
 
 ```@docs
 SpectrumResampler
-```
+```
diff --git a/src/Spectra.jl → src/SpectrumBase.jl b/src/Spectra.jl → src/SpectrumBase.jl
@@ -1,4 +1,4 @@
-module Spectra
+module SpectrumBase
 
 # Uniform API
 export AbstractSpectrum, Spectrum, spectrum, spectral_axis, flux_axis

diff --git a/src/transforms/resampler.jl b/src/transforms/resampler.jl
@@ -8,7 +8,7 @@ Interpolation methods from many packages can be used without issue. Below we sho
 First, we set up an arbitrary spectrum and a linear interpolator from DataInterpolations.jl:
 
 ```jldoctest resampling
-julia> using Spectra: SpectrumResampler, spectrum, spectral_axis, flux_axis
+julia> using SpectrumBase: SpectrumResampler, spectrum, spectral_axis, flux_axis
 
 julia> using DataInterpolations: LinearInterpolation, ExtrapolationType
 

diff --git a/src/utils.jl b/src/utils.jl
@@ -15,7 +15,7 @@ The physical constants are calculated using [PhysicalConstants.jl](https://githu
 
 # Examples
 ```jldoctest
-julia> using Spectra, Unitful, UnitfulAstro
+julia> using SpectrumBase, Unitful, UnitfulAstro
 
 julia> wave = range(1, 3, length=100)u"μm"
 (1.0:0.020202020202020204:3.0) μm

diff --git a/test/Project.toml b/test/Project.toml
@@ -6,7 +6,7 @@ Measurements = "eff96d63-e80a-5855-80a2-b1b0885c5ab7"
 ParallelTestRunner = "d3525ed8-44d0-4b2c-a655-542cee43accc"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 RecipesBase = "3cdcf5f2-1ef4-517c-9805-6587b60abb01"
-Spectra = "391af1a9-06f1-59d3-8d21-0be089654739"
+SpectrumBase = "391af1a9-06f1-59d3-8d21-0be089654739"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 Unitful = "1986cc42-f94f-5a68-af5c-568840ba703d"
 UnitfulAstro = "6112ee07-acf9-5e0f-b108-d242c714bf9f"
diff --git a/test/aqua.jl b/test/aqua.jl
@@ -1,3 +1,3 @@
 using Aqua: test_all
 
-test_all(Spectra)
+test_all(SpectrumBase)
diff --git a/test/runtests.jl b/test/runtests.jl
@@ -1,8 +1,8 @@
 using ParallelTestRunner: runtests, find_tests, parse_args
-import Spectra
+import SpectrumBase
 
 const init_code = quote
-    using Spectra: Spectra, Spectrum, SingleSpectrum, EchelleSpectrum, IFUSpectrum, spectrum, spectral_axis, flux_axis
+    using SpectrumBase: SpectrumBase, Spectrum, SingleSpectrum, EchelleSpectrum, IFUSpectrum, spectrum, spectral_axis, flux_axis
     using Measurements: Measurements, ±
     using Unitful: @u_str, unit, ustrip
     import Random
@@ -11,4 +11,4 @@ end
 args = parse_args(Base.ARGS)
 testsuite = find_tests(@__DIR__)
 
-runtests(Spectra, args; testsuite, init_code)
+runtests(SpectrumBase, args; testsuite, init_code)
diff --git a/test/transforms/redden.jl b/test/transforms/redden.jl
@@ -1,4 +1,4 @@
-using Spectra:
+using SpectrumBase:
     redden,
     redden!,
     deredden,

diff --git a/test/transforms/resample.jl b/test/transforms/resample.jl
@@ -1,4 +1,4 @@
-using Spectra: Spectra, AbstractSpectrum, SpectrumResampler, spectrum, spectral_axis, flux_axis
+using SpectrumBase: SpectrumBase, AbstractSpectrum, SpectrumResampler, spectrum, spectral_axis, flux_axis
 using DataInterpolations: LinearInterpolation, ExtrapolationType
 using Unitful: @u_str, uconvert
 using UnitfulAstro
@@ -36,7 +36,7 @@ end
     resampler = SpectrumResampler(spec, interp)
     expected = """
     SpectrumResampler(Float64, Measurements.Measurement{Float64})
-      spec: Spectra.SingleSpectrum{Float64, Measurements.Measurement{Float64}}
+      spec: SpectrumBase.SingleSpectrum{Float64, Measurements.Measurement{Float64}}
       interpolator: DataInterpolations.LinearInterpolation{Vector{Measurements.Measurement{Float64}}, StepRangeLen{Float64, Base.TwicePrecision{Float64}, Base.TwicePrecision{Float64}, Int64}, Vector{Measurements.Measurement{Float64}}, Vector{Measurements.Measurement{Float64}}, Measurements.Measurement{Float64}}"""
 
     @test sprint(show, resampler) == expected

diff --git a/test/utils.jl b/test/utils.jl
@@ -1,18 +1,18 @@
-using Spectra: blackbody#, line_flux, equivalent_width
+using SpectrumBase: blackbody#, line_flux, equivalent_width
 
 @testset "Blackbody T=$T" for T in [2000, 4000, 6000]
     wave = range(1e3, 5e4, length = 1000)
     b = 2.897771955185172e7
 
     bb = @inferred blackbody(wave, T)
-    @test typeof(bb) <: Spectra.Spectrum
+    @test typeof(bb) <: SpectrumBase.Spectrum
     @test bb.T == T
     @test spectral_axis(bb)[argmax(bb)] ≈ b / T rtol = 0.01
 
     wave *= u"angstrom"
     T *= u"K"
     bb = @inferred blackbody(wave, T)
-    @test typeof(bb) <: Spectra.Spectrum
+    @test typeof(bb) <: SpectrumBase.Spectrum
     @test unit(bb)[2] == u"W/m^2/angstrom"
     @test bb.T == T
     @test spectral_axis(bb)[argmax(bb)] ≈ b * u"angstrom*K" / T rtol = 0.01