Armani, Nerses

Casey, Thomas

Gao, Guangjun

Marx, Catherine T.

Pasquale, Bert

NASA Technical Reports Server

The	WFIRST	Op,cal	Design	of	the		
Phase-A	Wide	Field	Channel	
Bert	Pasquale	
Catherine	T	Marx,	Guangjun	Gao,	Nerses	Armani,	Thomas	Casey	
	
July	13,	2017	
Interna,onal	Op,cal	Design	Conference	
Denver,	CO	
https://ntrs.nasa.gov/search.jsp?R=20170006563 2019-08-31T06:46:50+00:00Z
Contents	
2	
•  OVERVIEW	
•  SCIENCE	
•  OBSERVATORY	PHASE-A	ARCHITECTURE	CHANGES	
•  WIDE	FIELD	CHANNEL	OPTICAL	LAYOUT	
•  PERFORMANCE	
•  INTEGRAL	FIELD	CHANNEL	
	
Phase-A	Imaging	Op,cs	Assembly	
3	
WFIRST	Imaging	Op,cs	Assembly	(IOA)	
•  Observatory	architecture	revamped	for	Phase-A	
•  AY	Op,cs	Module	(AOM)	
–  WFC	AY	Op,cs	
–  IFC	Relay	Op,cs	
•  CGI	Ter,ary	Collimator	Assembly	(TCA)	
	
Exis,ng	Assets	
4	
	 	
Science	&	FOV	
5		
Architecture	Study	Op,ons	
6	
	
Final	Phase-A	Layout	
7	
	
WFI	Meridian	Cross	Sec,on	
8		
WFC	Op,cal	Path	
9		
Element	Wheel,	Filters	&	Grism	
10	
	 	
FPA	and	SCA	Detail	
11	
	 	
WFC	Imaging	Performance	
12	
	
WFC	Spectrographic	Performance	
13	
	 	 	
Integral	Field	Channel	
Op,cs	Bench	
14	
	
Summary	&	Current	Eﬀorts	
•  System	Requirements	Review	(Late	2017)	
•  Op,cal	sensi,vi,es	and	predic,ve	performance	modeling	
•  Roadmap	to	the	Phase-B	proto-ﬂight	design	work	
•  Inter-disciplinary	analysis	
•  Scien,ﬁc	simula,ons		
•  Acquisi,on	strategy	
15	
Thank	You!	
	
	
Ques,ons	&	Answers	
	
Bert.Pasquale@nasa.gov		
	
	
16	


The WFIRST Optical Design of the Phase-A Wide Field Channel

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