Search for news, events, etc.

Search Method

Do not include words like a, and, for, the, etc.

Advanced Query Syntax

Content Type

Sort By

This site is protected by reCAPTCHA and the Google

Privacy Policy and Terms of Service apply.

SCHEDULED OUTAGE: This website will be unavailable Sunday, January 31, 2021 from 7:30am—4pm (EST). This affects STScI websites, applications, and external services as well as network disruptions between all internal segment connectivity.

Main Navigation

STScI Home

Who We Are
What We Do
Hubble Space Telescope
James Webb Space Telescope
Nancy Grace Roman Space Telescope
Mikulski Archive for Space Telescopes (MAST)
Scientific Community
STScI Research
News Center
Events
- Webcasts
  - Webcast FAQs
Communications and Outreach
Opportunities
Contact Us
- Local Information
- Getting Here

GUIDESTARS

HST Home
About
Proposing
Observing
Instrumentation
Documentation
- Handbook Archive
News & Events

Breadcrumbs Navigation

Home
Hubble Space Telescope
Instrumentation
Advanced Camera for Surveys
Performance
Anomalies and Artifacts
Guidestars

LAST UPDATED: 06/17/2019

Please Contact the HST Help Desk with any Questions

https://hsthelp.stsci.edu

Follow HST on:

Footer STScI Secondary Navigation

Who We Are
Webcasts
MAST
News Center
MyST
Contact Us
Opportunities
Events

Follow us on our social media channels.

Utility Navigation

Sitemap
Copyright
Privacy