10.5.5 ACS SBC Spectral Elements

There are many spectral elements (filters and prisms) allowed for HST's ACS/SBC. This article provides a list of those spectral elements for the Astronomer's Proposal Tool (APT).

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Table 10.7: Spectral Elements for use with the ACS/SBC Configuration

WheelPositionNameDescription

3

2

F115LP

MgF2

3

3

F125LP

CaF2

3

5

F140LP

BaF2

3

6

F150LP

crystal quartz

3

8

F165LP

Suprasil

3

9

F122M

Ly-a

3

11

PR130L

CaF2 PRISM

3

12

PR110L

LiF2 PRISM



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