Final as-built efficiency estimate (from telescope to spectrometer CCDs)

Green channel datafiles within above plot

Red channel datafiles within above plot

List of datafiles and parameters used to generate above plot

Fiber Injection Unit

Entrance Doublet AR Coating

First Surface:

Open

Second Surface:

Open

Science Arm Triplet AR Coating

UV Dichroic - Dichroic Transmission

UV Dichroic - Dichroic Reflection

UV Dichroic - AR Coating on Exit Surface

Science Dichroic - Dichroic Transmission

Science Dichroic - Dichroic Reflection

Science Dichroic - AR Coating on Exit Surface

ADC - Surface 1

ADC - Surface 2 Plot 1

ADC - Surface 2 Plot 2

Fibers

Fiber Coatings

Open

Note: to see the data in this Excel file, right click on one of the tabs and choose ‘Unhide’, then select ‘Data’

Science Fiber Runs Transmission Data:

From Kodi:

I also added a decoder ring with one assumption. They didn’t log which fibers went into runs 100 and 102. Based on the sequential nature of the shipments, S/N: 1 of the science and sky fibers should have gone in first. There is a negligible difference between these two runs though.

Scrambler

Scrambler Lenses

No final data available (only theoretical plots)

Ross ‘220’ coating on BK7:

Ross ‘220’ coating on SF8:

Vacuum Window AR Coatings

Reformatter

Full Reformatter

Reformatter Lens Coatings

A separate plot for the triplet lens was not created, but the data is in the excel file in the row above.
Triplet coating data at right.

Reformatter Mirror Coatings

All data:

Open

Just reflectivity:

Open

Core Spectrometer

Primary Collimator Mirror

Data at all measured positions:

Open

Ravg only:

Open

Intermediate Fold Mirror

Open

Layertec original file:

Open

Secondary Collimator Mirror

Open

Layertec original file:

Open

Dichroic - Reflection (Green Channel)

Dichroic - Transmission (Red Channel)

Dichroic - AR Coating on Exit Surface

Red Fold Mirror

Open

Layertec original file:

Open

Green Grism and Camera Grism

Green Grism Prism - AR Coating

Datafile from PFG:

Open

Min values (conservative case):

Open

Green VPH

Green VPH - Exit Surface AR Coating

Datafile from PFG:

Open

Worst witness sample (conservative case):

Open

Green Camera - AR Coatings

Final camera throughput report:

Open

Excel file with all data:

Open

Red Grism and Camera

Red Grism Prism - AR Coating

Datafile from PFG:

Open

Min values (conservative case):

Open

Red VPH

Red VPH - Exit Surface AR Coating

Datafile from PFG:

Open

Worst witness sample (conservative case):

Open

Red Camera AR Coatings

Final camera throughput report:

Open

Excel file with all data:

Open

Detectors

Green CCD

Red CCD

Updated spec

KPF Spectrometer Optics Coating Spec v10.xlsx

Reflectivity requirement now "minimum 97.0%, 98.0% average, goal 99.0% average", as discussed at Weekly

Tim's vendor summary

Spectrograph Coatings - summary 31jan2020 - v2.pptx

As of Jan 31 2020 (Note Layertec quote came in after this)

Materion response

 ROM proposal:

Materion ROM proposal for KPF spectrometer optics.pdf

Jan 22 2020 prelim spectrum, ave 99.1%:

Refl_NQ 445-870nm.xlsx

Layertec response

Quote:

QUOTATION_20023746.pdf

Curve:

157351.pdf

NOTE!  Looking at this again I was reminded Item 70 in the quote is for a test run.  However, it is for coating only - substrates and the testing afterwards not included.

Contacts:

thomas.kraft@layertec.de

Stefan Götz <info@layertec.de>

(Will also separately send email train)

Inifinite:  higher reflectivity exercise

Curve:

Infinite Coating Models 8dec2017 - q2017-530-KPF-rev A design models.xlsx

Cost:

I can't find the quote in my inbox.  In a slide deck I said this improved coating would be '$11.5k more'

From Géza at Infinite:

"Hi Tim, here’s the revised design for the mirror. Its 48 layers versus the first version which was 21 layers."

Note from Tim when he sent this to me:

Hi Steve –

Here is the coating data from Infinite.  The data and summary tabs show the data for the improved, expensive broadband reflective coating.  There’s also a tab that has the old version of that coating too.

-Tim

Infinite:  PDR

ROM quote:

UC Berkely Q2017-530 KPF Optics.xls

Emailed to us from Tim on October 27th, 2017.  Note this also included transmissive optics.

See excel file one line above for what I think is the the coating they were quoting to here.