GO 18369

Tue Sep 01 04:12:02 EDT 2026

Principal Investigator: Maimouna Brigitte
PI Institution: Astronomical Institute, Academy of Sciences of Czech Rep
Investigators (XML)

Title: Cygnus X-1, unraveling a well-known mystery: HST/COS spectroscopy of the stellar wind in the X-ray binary Cygnus X- 1.
Cycle: 34
External Allocation: 15 orbits
Proprietary Period: 6 months

Program Status: Implementation

Program Coordinator: William Januszewski Contact
Contact Scientist: Ravi Sankrit Contact

Program Contents

• APT File
• Formatted Listing
• Public PDF

Visit Status Information (XML)

Requests

• Report a duplication of an observation in this program by another HST program.
• Request a program change.
• Activate a target of opportunity.