Difference between revisions of "Lesedi HR Spectrograph (name TBD)"

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(Created page with "= 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 us...")
 
(Detectors)
 
(2 intermediate revisions by the same user not shown)
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== Documentation ==
 
== Documentation ==
 
* Add notes from Christian's emails here
 
* Add notes from Christian's emails here
* Detector notes and discussions
 
 
* Rough purchasing list from Chris' visit 03/2018.  He can likely supply the prism, collimator, and fiber injection:
 
* Rough purchasing list from Chris' visit 03/2018.  He can likely supply the prism, collimator, and fiber injection:
 
     $35k  bench optics
 
     $35k  bench optics
 
     $55k Echelle grating
 
     $55k Echelle grating
 
     $3k fiber injection optics
 
     $3k fiber injection optics
     $30k collimator/ADC.refocus mechanism
+
     $30k collimator/ADC/refocus mechanism
 +
 
 +
== Detectors ==
 +
* 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:
 +
{| class="wikitable" border="1"
 +
|-
 +
! 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       
 +
|-}

Latest revision as of 08:47, 5 April 2018

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

Documentation

  • 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

Detectors

  • 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