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Upcoming Events

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Luisa Rebull: Astronomy Data & Image Processing

Key Links

Resources

Timestamps (Video 1: Astronomy Data & Image Processing)

00:00:00 Reshama introduces Data Umbrella
00:04:25 Luisa begins presentation
00:08:09 (Astronomy) Citizen Science programs
00:11:00 Moon Zoo (citizen science program)
00:11:43 Digital rabbit hole, publicly funded assets ==> public data
00:15:14 Role of (Astronomy) archives
00:17:28 About the astronomy archives
00:17:56 Optimal browsers to use
00:18:50 Mechanics of how to deal with digital images, Concept 2a: Bit Depth
00:21:51 Concept 2b: Image Compressions
00:22:41 Concept 2c: FITS files (Flexible Image Transport System)
00:24:28 Concept 3: Color in images
00:28:41 One image
00:29:21 Concept 3b: Color images
00:31:02 Filters
00:31:32 Images in astronomy
00:32:01 "true color" or "representative color" in images
00:33:15 Common misconception
00:33:40 Concept 4a: multiple wavelengths
00:35:00 Concept 4b: sky coverage, resolution
00:35:50 M16 Pillars of Creation image from Hubble telescope
00:38:41 Concept 5: Artifacts
00:41:10 Data acquisition and reduction
00:42:43 NASA Astronomical Archives
00:43:55 IRSA (NASA's Infrared Science Archive)
00:44:44 Rich data sets = enormous science potential
00:45:13 Firefly tools (software which is open source from IRSA)
00:45:29 Getting started
00:45:58 IRSA demo: https://irsa.ipac.caltech.edu/frontpage/
00:46:00 NOTE: go to this video for better video quality: Demo on Accessing IRSA Astronomy Data: https://youtu.be/veUkHUP_V4M
00:47:04 Bands (optical, infrared)
00:48:46 back to IRSA demo
00:53:37 slides: Challenges to explore (not comets, star clusters, galaxies, etc)
00:54:58 slides: Next steps (quantitative measures of objects online); IRSA Viewer tool
00:56:29 IRSA time series tool
01:01:42 Tips for next steps in learning about astronomy (PyVo, AstroPy, astroML)
01:02:38 Planetary data resources
01:03:38 Summary of main points
01:04:30 QR Code for link to resources: https://web.ipac.caltech.edu/staff/rebull/outr/datalinks.html
01:09:29 Q: Which tools can handle FITS images?

Timestamps (Video 2: Demo on Accessing IRSA Astronomy Data)

00:00 IRSA demo: https://irsa.ipac.caltech.edu/frontpage/ 
01:02 Finder Chart
09:11 IRSA Viewer
15:18 SOFIA (Stratospheric Observatory for Infrared Astronomy)
17:43 collection of video tutorials: https://irsa.ipac.caltech.edu/docs/howto/tutorials.html

Event

Did you know that there are many astronomy data archives, all publicly available? Or, did you have a cloudy night but still want to do some astronomy? Do you really want to see the sky tonight but you also like running water and A/C? There is a ton of research-quality astronomy data available to you right now. You just need to know how to get access to it! In order to understand how astronomical images work, you need to know about what color images really are, so I'll spend time on that. I'll cover a few of the many ways that you can get access to real data, from citizen science web-based projects to FITS files. I’ll cover a few basics of how to interpret astronomy images, and demonstrate how to get access to NASA’s Infrared Science Archive (IRSA).

About the Speaker

Dr. Luisa Rebull is a research astronomer at the NASA/IPAC Infrared Science Archive (IRSA) at Caltech. She has always wanted to be an astronomer, ever since she was very little. She got her undergraduate degree in physics from the College of William and Mary in Virginia, and her graduate degrees in astronomy and astrophysics from the University of Chicago. She has been on the science staff at IPAC since 2002. Her research focuses on the formation of young, low-mass stars all over our Galaxy (stars ~1 to 50 million years old) and in understanding how stellar rotation changes over the first billion years of a star's life.