Lesedi HRS Project Wiki

This wiki is for construction of a high-resolution spectrograph on the 1-m Lesedi telescope in Sutherland. We anticipate future wikis for the user manual and for technical support.
The SAAO and Christian Schwab (Macquarie Univ. and AAO) are collaborating on the project.
The instrument is based on a design that Christian modified from NEID, an innovative HRS for use on the 3.5-m WIYN (https://neid.psu.edu/). We are hoping to reach a few m/sec accuracies for radial velocity measurements on Lesedi.

Project Team

Remote Expert & Collaborator: Christian Schwab (Macquarie U./AAO)

Instrument PI: Hannah Worters

Project Sponsor/Co-I: Amanda Sickafoose

Co-Is/Postdocs/Student: Nic Erasmus, others?

Local Expert Consultant: Lisa Crause

Mechanical Design:James O'Connor (oversight), Egan Loubser, Craig Sass

Software Engineers: Carel van Gend, Briehan Lombaard

Add notes from Christian's emails here
Rough purchasing list from Chris' visit 03/2018. He can likely supply the prism, collimator, and fiber injection:

   $35k  bench optics
   $55k Echelle grating
   $3k fiber injection optics
   $30k collimator/ADC/refocus mechanism

We have gone through the SAAO CCD store, and there are 5 engineering CCDs from SALTICAM and RSS (e2V 44-82, 1k x 2k) that can be considered:

Serial No.	Coating	Failure	QE (350,400,500,650,900,1000 nm)	Located
01394-08-01	astrobroadband	fullwell 129k (vs. 150)	54,70,78,75,45,10	??
01394-21-01	coated	CTE 99.9985	16,39,65,97,60,13	in lab
01451-16-02	coated	CTE 99.977	13,35,68,86,54,10	in lab
01502-15-01	coated	low level structure @ 350nm	15,44,27,75,60,13	in lab
04484-03-02	AR coated	low QE (3%) at 400 nm	41,67,80,80,53,10	in lab