HST10X
Feasibility Study Summary Report

Table of Contents

   Foreword
 1. Executive Summary
 2. Science with HST10X
 3. Cargo/Installation Mission System Description
      3.6. Mission Sequence Pictorial
 4. Optical Assessment
               Afocal, two-fold, "add-on" telescope concept
 5. Technical Reports
      5.1. HST10X Structural Dynamics Assessment
      5.2. HST10X Preliminary Thermal Systems Assessment
      5.3. FGS Impacts from HST10X Enhancement
      5.4. Pointing and Control
      5.5. Mission Analysis for an HST10X Ion Engine Stationkeeping System (IESS)
          Figure 5.5 IESS Configuration
 6. HST10X Study Team
 7. HST10X Example Schedule

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Table of Contents, long version
Foreword
1. Executive Summary 1.1. Overview
1.1.1. Abstract
1.1.2. Background
1.1.3. Study Goal
1.1.4. Study Teams
1.1.5. Study Limits
1.1.6. Study Conclusion
1.1.7. Study Results Summary
1.2. Science Enabled by the HST10X Enhancement
1.3. The Installation Mission
1.4. Optical Assessment Figure 1.4.1. Ray-trace of the "add-on" telescope
Figure 1.4.2. The Two-fold Mirror Concept
Figure 1.4.3. The Afocal Telescope Concept
Figure 1.4.4. HST10 and Enhancement Components in the Orbiter Cargo Bay 1.5. Technical Reports
1.5.1. Structural Dynamics
1.5.2. Thermal Assessment
1.5.3. Fine Guidance Sensor Operation
1.5.4. Pointing and Control
1.5.4.1. Control Systems
1.5.4.2. Orbit Decay
1.5.5. ION Engine Stationkeeping System
1.6. Team List
1.7. Example Schedule 2. Science with HST10X 2.1. Introduction
2.2. HST10X Performance
2.2.1. Optical Performance Table  2.1 The HST10X Afocal Telescope
Table  2.2 Comparison of Two-pixel Resolution (arc-sec) at 500 nm
Figure 2.1 An Extraction from the HDF F814W Composite image
Figure 2.2 Simulated Images of Interacting Galaxies
Table  2.3 HST10X Areal Coverage (Square Arc-minutes)
Table  2.4 HST10X Limiting Magnitudes (SNR = 10)
Table  2.5 ACS/WF2 Orbits to Equal One HST10X Orbit 2.2.2. UV Performance Table 2.6 HST10X Limiting Fluxes with STIS and COS 2.3. Examples of Outstanding Science Enabled by HST10X
2.3.1. Detection and Spectroscopy of Earth-like Planets
2.3.2. The Formation and Evolution of Galaxies Figure 2.3 Three Small Fields from the HDF North composite, true color image 2.3.3. Cepheid Distances and Large Scale Flows within 100 Mpc
2.3.4. Origin of Stellar and Planetary Systems Figure 2.4 Protoplanetary Disks in Orion 2.3.5. Observational programs that will be carried out with HST10X-WFC3/ACS will include:
2.3.6. Large Scale Structure Figure 2.5 Large-scale Cosmological Structure
Table  2.7 Quasar Number Counts and Mean Angular Distance 3. Cargo/Installation Mission System Description 3.1. Mirror Configuration for the Cargo Bay
3.2. Installation Mission Overview
3.3. Cargo Elements
3.3.1. Orbital Replacement Unit (ORU) Description
3.3.2. Space Support Equipment (SSE)
3.4. Mission Sequence Description
3.4.1. EVA Day 1, Remove OLS and Install Ion Thrusters
3.4.2. EVA Day 2, Install New Light Shield, but do not Deploy Axially
3.4.3. EVA Day 3, Prepare and Install New Mirror Assembly
3.4.4. EVA Day 4, Swap SIís
3.4.5. Deploy HST
3.5. Flight System & Servicing Remaining Issues
3.6. Mission Sequence Pictorial 4. Optical Assessment 4.1. Introduction
4.2. Mirror Design Selection Figure 4.1.  Ray-trace of "add-on" telescope 4.3. Optical Assessment Overview Figure 4.2. The Afocal "add-on" Telescope Concept
Figure 4.3. The Two-fold Mirror Concept
Table  4.1. VLT Blank Parameters 4.4 Attachment to existing structures
4.5 Optical Parameters
4.5.1 General Characteristics of Afocal Approach Table  4.5.1 Telescope Assembly Optical Parameters
Table  4.5.2 Telescope Alignment Error Summary
Table  4.5.3 LOS Control Error Budget
Table  4.5.4 Wavefront Error Budget for Currently Planned SI's 4.5.2 Conclusions from the Error Budgets
4.6 HST10X to SI Interface is Retained
4.7 Science Instrument Compliment Table  4.7.1 SI Complement
Table  4.7.2 SI Performance Comparison 4.8 To Optimize HST10X Capabilities Table  4.8.1 CODEX Wadsworth Spectrometer Parameters
Table  4.8.2 Wavefront Error Budget with CODEX Correction 5. Technical Reports 5.1. HST10X Structural Dynamics Assessment
5.1.1. The HST10X Dynamic Model
5.1.2. HST10X Primary and Secondary Mirror Assemblies
5.1.3. HST10X Light-Shield Assembly
5.1.4. The HST10X-HST Modeled System 5.2. HST10X Preliminary Thermal Systems Assessment
5.2.1. HST10X Thermal Assessment Assumptions
5.2.2. AFT Shroud Impacts
5.2.3. Forward Section Assessment
5.2.4. Conclusions
5.3. FGS Impacts from HST10X Enhancement
5.3.1. Optical Configuration Considered
5.3.2. Reduction in the FGS field of view (FOV)
5.3.3. Guide Star Acquisitions
5.3.4. Jitter and the PCS/FGS system.
5.4. Pointing and Control
5.4.1. Slew and Control System Performance
5.4.2. Accelerated Orbit Decay
 5.5. Mission Analysis for an HST10X Ion Engine Stationkeeping System
5.5.1. Stationkeeping Analysis Issues
5.5.2. Stationkeeping System Design
5.5.3. Stationkeeping System Description 6. HST10X Study Team
7. HST10X Example Schedule

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