Tables and Illustrations

Cycle 19 Phase II Proposal Instructions

HST Phase II Proposal Instructions for Cycle 19 > Chapter 10: Fine Guidance Sensors (FGS) > 10.4 Tables and Illustrations

10.4 Tables and Illustrations

Table 10.2: Spectral Elements for the FGS

Name

Comments

Effective Wavelength (Å)

Full Width at Half Maximum (Å)

F583W

“Clear” filter

5830

2340

F5ND

Neutral Density (5 mag)

.....

.....

F605W¹

“Astrometry Clear” filter

6050

1900

F650W²

“Red” filter

6500

750

F550W

“Yellow” filter

5500

750

PUPIL

Pupil stop

5830

2340

1

F605W is to be specified with FGS3 and FGS1.

2

F650W is to be specified with FGS2 only.

Figure 10.1: The FGS POS TARG and interferometer coordinate systems.

The POS TARG reference frame must be used to specify Special Requirements POS TARG and ORIENTation. Note that the FGS interferometer axes and POS TARG axes have different origins and parities. The interferometer reference frame is used in pipeline processing only.

Name	Comments	Effective Wavelength (Å)	Full Width at Half Maximum (Å)
F583W	“Clear” filter	5830	2340
F5ND	Neutral Density (5 mag)	.....	.....
F605W¹	“Astrometry Clear” filter	6050	1900
F650W²	“Red” filter	6500	750
F550W	“Yellow” filter	5500	750
PUPIL	Pupil stop	5830	2340