= 20211021 =


== Taking a few dark sky science+sky HPF exposures ==

//The HPF team requested us take a few of these to help calculate throughput differences between the sky and science fibers//

1. When you are running OCD to observe HETDEX fields,

2. When logged in to hpf@hpf

3. Right after the TO finishes the setup_complete on an OCD target, run:
{{{
   [hpf@hpf ~]   hpfseconds_parallel sky 900 1
}}}

4. After the NR entry appears, edit the target to:
    a. Add the program ID {{{ ENG21-3-003 }}}
    b. Be sure "Start" and "Exp Start" are both the same as when you ran the script
    c. Change data type to {{{ cal }}}

[[br]]

We can take 2 or 3 of these dark sky exposures per night with HETDEX, hoping to cover a few more nights with different sky conditions.