Phase I Proposal

The normal Observing periods are:

  • YYYY-1 (Dec-Mar of year YYYY)
  • YYYY-2 (Apr--July of year YYYY)
  • YYYY-3 (Aug-Nov of year YYYY)
Science operations are underway with the LRS2, VIRUS and HPF instruments. Dark time will be dominated by HETDEX observations as the highest priority.

Please contact your local HET or TAC representative to find out how your institution is going to run Phase I proposals and TAC allocations. For any other questions please contact the HET resident astronomers at astronomer(at)het.as.utexas.edu.

To address the needs of programs that can require Priority 0 time for rare high-scientific-priority events (e.g., gravitational wave events) that are expected to occur at a rate of less than one per trimester, the Board has created a new category of project that is evaluated by a Board-appointed committee and assigned outside of the current institutional process. (If the proposers wish to pursue individual institutional time, they could certainly do so.) This process is intended to minimize the impact on any given institution’s high priority time when no events are triggered.

To apply for consideration, a PI would assemble a team and present a proposal to the HET Board Chair. In addition to the science justification and responsibilities of the team members, the proposal should explicitly detail the process for event triggering. It is strongly encouraged that such a proposal be circulated to scientists at all institutions prior to submission to create a broadly-based team. The HET Board would decide on an allocation for the Priority 0 time; this allocation would not be removed from the amount of time assigned to the institutional allocation committees. If time was approved, the PI (and her/his designated representatives) would be authorized to activate the observations if the event occurred. If an event is triggered time will be charged to participating HET partners proportional to partner shares. In any trimester that such a program was activated the TAC programs of the institutions in this proposal will be affected, as the used time would be immediately applied to those partner shares.

If the project is not activated, then all partners’ observations and charged time would proceed as if the project did not exist.

Phase I involves the interaction between your TAC and you the Principal Investigator. First you should read what each TAC requires. Then you should become familiar with the observing procedures and capabilities of the HET.

The following links are mostly out-dated or broken - your institution will notify you on the procedures for submitting proposals to your TAC

You can get information about the telescope, instruments and calibrations in various locations in this web site. It is important to plan for extra time for overhead or special calibrations. Below we list some of the more important links you may need.

  1. Information for new users
  2. Phase I Basics
  3. HET Overview
  4. Instruments
  5. Calibrations
  6. Project Feasibility
  7. Some HETiosyncrasies of HET Data Acquisition

Observing around HETDEX fields

HETDEX will be taking a large number of hours in two different fields, shown below.
Further information about the LST ranges blocked by HETDEX fields during dark time is available on this page, and tools are provided to help PIs plan dark time observations around HETDEX.

Last updated: Thu, 29 Oct 2020 05:31:10 +0000 sir

Phase I

Phase I Information for New Users

Phase I Basics


Spectrophotometric Standard Stars

Radial Velocity Standard Stars

Telluric Standard Stars

Project Feasibility

Data Acquisition HETiosyncrasies