Skip to main content

Mission Overview

James Webb Space Telescope Early Release Observations (JWST-ERO)

Primary Investigator: Klaus Pontoppidan

Full Team: See full list

HLSP Authors: Karl Gordon

Released: 2022-10-18

Updated: 2022-10-18

Primary Reference(s): Pontoppidan et al. 2022

DOI: 10.17909/67ft-nb86

Citations: See ADS Metrics

Read Me

Source Data:



Southern Ring Nebula

Early release observations of the Southern Ring Nebula (NGC 3132) in MIRI filters F770W, F1130W, F1280W and F1800W. Credit: NASA, ESA, CSA, STScI.

Webb's First Deep Field

This Early Release Obervation shows a near-infrared image of galaxy cluster SMACS 0723 in filters F090W, F150W, F200W, F277W, F356W, F444W.

Stephan's Quintet

This image combines Early Release Observations from MIRI and NIRCam to create a composite image of Stephan's Quintet.

WASP-96 b Atmospheric Spectrum

A transmission spectrum made with Webb’s Near-Infrared Imager and Slitless Spectrograph (NIRISS) detects wavelengths from from 0.6 microns to 2.8 microns. The spectrum reveals atmospheric characteristics of the hot gas giant exoplanet WASP-96 b.  

"Cosmic Cliffs" in Carina

This Early Release Observation Captures the birth of stars in the nearby, young, star-forming region NGC 3324 (The Carina Nebula).


The James Webb Space Telescope (JWST) Early Release Observations (EROs) are a set of science products created to mark the end of commissioning and the beginning of science operations for JWST. Colloquially known as the "Webb First Images and Spectra", these products were intended to demonstrate to the global public that JWST is ready for science and is capable of producing spectacular results. The package was released on 12 July 2022, and included images and spectra of the galaxy cluster SMACS J0723.3-7327 and distant lensed galaxies, the interacting galaxy group Stephan's Quintet, NGC 3324 in the Carina star-forming complex, the Southern Ring planetary nebula NGC 3132, and the transiting hot Jupiter WASP-96 b. 

These products were produced using the best pipeline software and reference files available at the end of commissioning, and some data products are not ready for science (see Pontoppidan et al. 2022). Improved data products will become available at MAST as these data are reprocessed over time.  These will be available through improved pipeline products in MAST search interfaces, and at some point will supercede the versions provided here that will transition to historic artifacts. Data products from each instrument will be released as they become available.

Data Release 1 (October 18, 2022)

This release includes images from the MIRI instrument of the galaxy group Stephan's Quintet, the Carina nebula (NGC 3324), the Southern Ring planetary nebula (NGC 3132) and the galaxy cluster SMACS J0723.3-7327.

Data Products

JWST-ERO image files from MIRI are named according to the following convention:



  • <target> is the target (one of "stephansquintet", "smacs0723", "ng3132" or "carina").
  • <filter> is the filter used (e.g., "f770w").

Data file types:

_i2d.fits Calibrated image file

Data Access

Data products can be accessed from the following table. For individual files, download links are provided according to their optical elements. To download all files for an individual target, we provide cURL scripts.

Target Source Type Program ID Instrument Download by Optical Element cURL Script

Carina (NGC 3324)

Nebula 2731 MIRI

F770W, F1130W, F1280W, F1800W

Stephan's Quintet Galaxy group 2732 MIRI

F770W, F1000W, F1500W

NGC 3132 Planetary Nebula 2733 MIRI

F770W, F1130W, F1280W, F1800W

SMACS J0723.3-7327 Galaxy cluster 2736 MIRI F770W, F1000W, F1500W, F1800W All



Please remember to cite the appropriate paper(s) below and the DOI if you use these data in a published work. 

Note: These HLSP data products are licensed for use under CC BY 4.0.