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    SPHEREx Quick Release (QR): An All-Sky Spectral Survey

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    Sold by: IRSA 
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    Deployed on AWS
    The Spectro-Photometer for the History of the Universe, Epoch of Reionization, and Ices Explorer (SPHEREx) is a NASA Astrophysics Medium-class Explorer (MIDEX) mission launched in March 2025. During its planned two-year mission, SPHEREx will perform the first ever all-sky spectral survey in the optical to near-infrared (0.75-5 microns). SPHEREx data will be used to probe inflation and the early universe, trace the history of galactic light production, and investigate the origin of planetary systems and biogenic ices, in addition to contributing to many other astrophysics research topics. IRSA began releasing SPHEREx QR2 data on a weekly basis in October 2025. QR2 features substantially improved calibrations and supersedes QR1.

    Overview

    The Spectro-Photometer for the History of the Universe, Epoch of Reionization, and Ices Explorer (SPHEREx) is a NASA Astrophysics Medium-class Explorer (MIDEX) mission launched in March 2025. During its planned two-year mission, SPHEREx will perform the first ever all-sky spectral survey in the optical to near-infrared (0.75-5 microns). SPHEREx data will be used to probe inflation and the early universe, trace the history of galactic light production, and investigate the origin of planetary systems and biogenic ices, in addition to contributing to many other astrophysics research topics. IRSA began releasing SPHEREx QR2 data on a weekly basis in October 2025. QR2 features substantially improved calibrations and supersedes QR1.

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    Usage information

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    Delivery details

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    Description
    QR2 Spectral Images: Calibrated Spectral Images plus per-pixel status and processing flags, variance map, zodiacal model, exposure-averaged PSF, and wavelength WCS. Multi-extension FITS format.
    Resource type
    S3 bucket
    Amazon Resource Name (ARN)
    arn:aws:s3:::nasa-irsa-spherex/qr2/level2
    AWS region
    us-east-1
    AWS CLI access (No AWS account required)
    aws s3 ls --no-sign-request s3://nasa-irsa-spherex/qr2/level2/
    Description
    QR2 Absolute Gain Matrix: Pixel-to-pixel gain variations within a single spectral channel and relative gain differences across channels. FITS format.
    Resource type
    S3 bucket
    Amazon Resource Name (ARN)
    arn:aws:s3:::nasa-irsa-spherex/qr2/abs_gain_matrix
    AWS region
    us-east-1
    AWS CLI access (No AWS account required)
    aws s3 ls --no-sign-request s3://nasa-irsa-spherex/qr2/abs_gain_matrix/
    Description
    QR2 Exposure-Averaged PSF: Wavelength-dependent point spread function (PSF) estimates on a fine positional grid across each detector. FITS format.
    Resource type
    S3 bucket
    Amazon Resource Name (ARN)
    arn:aws:s3:::nasa-irsa-spherex/qr2/average_psf
    AWS region
    us-east-1
    AWS CLI access (No AWS account required)
    aws s3 ls --no-sign-request s3://nasa-irsa-spherex/qr2/average_psf/
    Description
    QR2 Dark Current: Per pixel dark current. FITS format.
    Resource type
    S3 bucket
    Amazon Resource Name (ARN)
    arn:aws:s3:::nasa-irsa-spherex/qr2/dark
    AWS region
    us-east-1
    AWS CLI access (No AWS account required)
    aws s3 ls --no-sign-request s3://nasa-irsa-spherex/qr2/dark/
    Description
    QR2 Dichroic: Map of pixels affected by flux attenuation due to the dichroic filter. FITS format.
    Resource type
    S3 bucket
    Amazon Resource Name (ARN)
    arn:aws:s3:::nasa-irsa-spherex/qr2/dichroic
    AWS region
    us-east-1
    AWS CLI access (No AWS account required)
    aws s3 ls --no-sign-request s3://nasa-irsa-spherex/qr2/dichroic/
    Description
    QR2 Gain Factors: Gain factors for each detector. YAML format.
    Resource type
    S3 bucket
    Amazon Resource Name (ARN)
    arn:aws:s3:::nasa-irsa-spherex/qr2/gain_factors
    AWS region
    us-east-1
    AWS CLI access (No AWS account required)
    aws s3 ls --no-sign-request s3://nasa-irsa-spherex/qr2/gain_factors/
    Description
    QR2 Non-functional Pixel Map: Map of permanently non-functioning pixels. FITS format.
    Resource type
    S3 bucket
    Amazon Resource Name (ARN)
    arn:aws:s3:::nasa-irsa-spherex/qr2/nonfunc
    AWS region
    us-east-1
    AWS CLI access (No AWS account required)
    aws s3 ls --no-sign-request s3://nasa-irsa-spherex/qr2/nonfunc/
    Description
    QR2 Non-Linearity Correction: Corrections applied to compensate for detector non-linearity due to gain degradation. FITS format.
    Resource type
    S3 bucket
    Amazon Resource Name (ARN)
    arn:aws:s3:::nasa-irsa-spherex/qr2/nonlinear_pars
    AWS region
    us-east-1
    AWS CLI access (No AWS account required)
    aws s3 ls --no-sign-request s3://nasa-irsa-spherex/qr2/nonlinear_pars/
    Description
    QR2 Readout Noise: Per-detector read noise maps. FITS format.
    Resource type
    S3 bucket
    Amazon Resource Name (ARN)
    arn:aws:s3:::nasa-irsa-spherex/qr2/readnoise_pars
    AWS region
    us-east-1
    AWS CLI access (No AWS account required)
    aws s3 ls --no-sign-request s3://nasa-irsa-spherex/qr2/readnoise_pars/
    Description
    QR2 Solid Angle Pixel Map: Per-detector measure of the solid angle per pixel in units of squared arcsec. FITS format.
    Resource type
    S3 bucket
    Amazon Resource Name (ARN)
    arn:aws:s3:::nasa-irsa-spherex/qr2/solid_angle_pixel_map
    AWS region
    us-east-1
    AWS CLI access (No AWS account required)
    aws s3 ls --no-sign-request s3://nasa-irsa-spherex/qr2/solid_angle_pixel_map/
    Description
    QR2 Spectral WCS Map: Detailed World Coordinate System (WCS) map. FITS format.
    Resource type
    S3 bucket
    Amazon Resource Name (ARN)
    arn:aws:s3:::nasa-irsa-spherex/qr2/spectral_wcs
    AWS region
    us-east-1
    AWS CLI access (No AWS account required)
    aws s3 ls --no-sign-request s3://nasa-irsa-spherex/qr2/spectral_wcs/
    Description
    SPHEREx Quick Release 1 (QR1): IRSA began releasing SPHEREx QR1 data on a weekly basis in July 2025. QR1 is superseded by QR2 and only available through January 2026. The data products and their organization in the bucket are described in the [SPHEREx Archive at IRSA User Guide](https://caltech-ipac.github.io/spherex-archive-documentation/).
    Resource type
    S3 bucket
    Amazon Resource Name (ARN)
    arn:aws:s3:::nasa-irsa-spherex/qr
    AWS region
    us-east-1
    AWS CLI access (No AWS account required)
    aws s3 ls --no-sign-request s3://nasa-irsa-spherex/qr/

    Resources

    Vendor resources

    View this dataset on Github 

    Support

    Contact

    https://irsa.ipac.caltech.edu/docs/help_desk.html 

    Managed By

    NASA/IPAC Infrared Science Archive (IRSA ) at Caltech

    How to cite

    SPHEREx Quick Release (QR): An All-Sky Spectral Survey was accessed on DATE from https://registry.opendata.aws/spherex-qr .

    License

    https://irsa.ipac.caltech.edu/data_use_terms.html