GO 17079

Mon Jan 19 07:02:42 EST 2026

Principal Investigator: In Sung Jang
PI Institution: University of Chicago
Investigators (XML)

Title: TRGB and Cepheid distance scales: is there local tension?
Cycle: 30
External Allocation: 74 orbits
Proprietary Period: 6 months

Program Status: Implementation

Program Coordinator: Weston Eck Contact
Contact Scientist: Jenna Ryon Contact

WFC3 Reviewer: Adam Riess Contact

Program Contents

• APT File
• Formatted Listing
• Public PDF
• HST Archive Information

Visit Status Information (XML)

Requests

• Report a duplication of an observation in this program by another HST program.
• Request an observing change.
• Report an observing problem.