EP Observing Proposal System (EOPS)
EP Observing Proposal Cycle-3: STP Observer Program Cycle-3 Proposer's Guidance
Proposal submission will open at 2026-03-02 00:00:00 (UTC+8).
STP Observer Program, including non-ToO observations and anticipated-ToO for known sources, opens to STP Member and Associate Member only. Please read the proposer's guidance carefully before submitting a proposal.
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EP Observing Proposal Cycle-3: Guest Observer (GO) Program Cycle-3 Proposer's Guidance
Proposal submission will open at 2026-03-02 00:00:00 (UTC+8).
Guest Observer (GO) Program, including non-ToO observations and anticipated-ToO for known sources, opens to non-STP proposers whose primary affiliations are in China. Please read the proposer's guidance carefully before submitting a proposal.
Please login the system first
New ToO Observation (to be open later) My proposal list
Proposal Documents
EP Technical Handbook (PDF)
Cycle-3 Invitation Letter (PDF)
Proposal Tools
EP Long-term Visibility Check Tool
Check EP long-term visibility for specific source coordinates in the sky.
WXT Online Simulator
Simulate point-like X-ray sources to be observed by WXT.
FXT Online Simulator
Simulate point-like X-ray sources to be observed by FXT.
FXT Technical Evaluation Tool
Perform technical evaluation (photon pile-up and optical loading) for the input source parameters and FXT configuration.
FXT Exposure Time Calculator
For the input source parameters, calculate the exposure time required to achieve a certain signal-to-noise ratio, or the signal-to-noise ratio that can be achieved with a certain exposure time.
User support at EP Science Center
Helpdesk
If you have any questions or difficulties submitting your proposal, or technical questions related to EP instruments, data and software, please submit them via EP helpdesk under appropriate categories.
Email Us
If you have more general questions, comments and suggestions related to EP's scientific operation and performance, you may send emails directly to EPSC via: ep@bao.ac.cn