Color-composite images from the James Webb Space Telescope
summary
Open-source Jdaviz loads JWST FITS from MAST, aligns by WCS, maps filters to RGB and tweaks per-layer stretch/opacity to produce color composites. The demo runs a cloud notebook with nine images totalling three gigabytes, mixes NIRCam and MIRI layers, and exports PNGs; MIRI autoscaling often requires manual histogram adjustments. The package exposes a UI and an API but currently lacks an easy state-saving export of exact layer settings for exact replay.
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chapters (15)
- 0:00Introduction
- 2:10Why JWST matters
- 4:44What is jdaviz
- 6:31Filters for color composites
- 7:56Exploring jdaviz interface
- 11:09Hands-on demo prep
- 13:19Loading telescope images
- 15:46Color composite step-by-step
- 17:13Refining with API
- 19:01Comparing final result
- 20:45Q&A: Exoplanet tools
- 21:59Q&A: Deployment apps
- 23:24Q&A: Saving UI state
- 24:51Q&A: FITS format
- 26:16Closing
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