Target of Opportunity Resources

Most astronomical phenomena take place over timescales vastly exceeding the human lifespan. Some, though, occur over years, months, days, even minutes and seconds.

With HBO instrumentation, photometry is possible easily to magnitude 19 (deeper is possible but will require active guiding and a more detailed setup). Long-slit low-resolution spectroscopy can be done on targets to magnitude 15, though guiding will be difficult toward the faint end, potentially requiring a nearby (within 1 arcmin) brighter guide star.

• List of Recent Supernovae with Finding Charts
• List of Recent Novae with Finding Charts
• Another Supernovae list but without charts
• The Astronomer's Telegram
• High Energy Network Mailing List listing recent Gamma Ray Bursts
• IAU Circulars (Observatory and Laboratory access only)

-- DonBarry - 12 Oct 2007