Cosmic Origins Spectrograph Instrument Handbook for Cycle 17

8.5 Parallel Observations While Using COS

---

As this is written plans for using COS in parallel with other instruments on HST are being developed. Because the COS aperture is so small, it makes sense to use COS as the prime instrument even if a camera, say, is used in parallel. Also, COS is intended to be used on point sources that are centered in its aperture, and that may prevent dithering any camera exposures obtained in parallel.

Proposers with an interest in developing parallel observations with COS are urged to contact an Instrument Scientist and to check the STScI web pages for new information before the proposal deadline.