CCD Long-Pass Imaging F28X50LP
Description
The F28X50LP mode is useful for deep imaging longward of 5500 Å. The field of view is 28" × 50". The ACS/WFC with the F814W filter will be more appropriate for most programs.
Recommended Uses
This filter is recommended for deep high-resolution imaging between 5500 Å and 10,000 Å. Default aperture for target acquisitions.
Special Considerations
Very red sources may show significant wings from detector halo (see Section 7.2.8).
Pivot λ (Å) | FWHM (Å) | AB mag zero point | Speak | Bλ | R80 (arcsec) | Flux in central pixel |
7223.4 | 2693.2 | 25.266 | 1.76e+15 | 3486.8 | 0.15 | 14% |
Figure 14.7: Throughput for F28X50LP
Table 14.4: F28X50LP Sensitivity & Throughput
λ | Sensitivity | % Throughput |
5400. | 2.38E14 | 1.93 |
5600. | 1.19E15 | 9.32 |
5800. | 1.49E15 | 11.30 |
6000. | 1.67E15 | 12.23 |
6200. | 1.70E15 | 12.05 |
6400. | 1.74E15 | 11.95 |
6600. | 1.75E15 | 11.61 |
6800. | 1.66E15 | 10.71 |
7000. | 1.69E15 | 10.58 |
7200. | 1.64E15 | 10.01 |
7400. | 1.60E15 | 9.47 |
7600. | 1.44E15 | 8.33 |
7800. | 1.40E15 | 7.89 |
8000. | 1.28E15 | 7.04 |
8200. | 1.18E15 | 6.29 |
8400. | 1.10E15 | 5.76 |
8600. | 1.00E15 | 5.11 |
8800. | 1.01E15 | 5.03 |
9000. | 1.01E15 | 4.93 |
9200. | 9.76E14 | 4.66 |
9400. | 9.46E14 | 4.42 |
9600. | 8.74E14 | 4.00 |
9800. | 7.19E14 | 3.22 |
10000. | 5.25E14 | 2.30 |
Figure 14.8: Point Source S/N vs. AB magnitude in the V-band for the F28X50LP filter. Top curves are for low sky; bottom curves are for average sky. Curves are labeled by required exposure time (seconds).
Figure 14.9: Extended Source S/N vs. AB magnitude in the V-band for the F28X50LP filter for gain=1. Top curves are for a source area of 0.2 arcsec2; bottom curves are for 1 arcsec2. Average sky assumed. Curves are labeled by required exposure time (seconds).
Table 14.3: Radial Profile for 50CCD
Radius | Fraction of Energy Encircled | ||
Pixels | Arcsec | Intensity | |
1 | 0.050 | 1.703e-02 | 0.337 |
1.5 | 0.075 | 7.468e-03 | 0.512 |
2 | 0.100 | 4.196e-03 | 0.632 |
3 | 0.150 | 1.733e-03 | 0.804 |
4 | 0.200 | 4.246e-04 | 0.883 |
5 | 0.250 | 1.660e-04 | 0.911 |
10 | 0.500 | 2.469e-05 | 0.976 |
15 | 0.750 | 5.360e-06 | 0.996 |
19.25 | 0.963 | 3.333e-07 | 1.000 |
Figure 14.10: Point Source Encircled Energy for F28X50LP
Figure 14.11: Point Source Intensity vs. Radius for F28X50LP
-
STIS Instrument Handbook
- • Acknowledgments
- Chapter 1: Introduction
-
Chapter 2: Special Considerations for Cycle 33
- • 2.1 Impacts of Reduced Gyro Mode on Planning Observations
- • 2.2 STIS Performance Changes Pre- and Post-SM4
- • 2.3 New Capabilities for Cycle 33
- • 2.4 Use of Available-but-Unsupported Capabilities
- • 2.5 Choosing Between COS and STIS
- • 2.6 Scheduling Efficiency and Visit Orbit Limits
- • 2.7 MAMA Scheduling Policies
- • 2.8 Prime and Parallel Observing: MAMA Bright-Object Constraints
- • 2.9 STIS Snapshot Program Policies
- Chapter 3: STIS Capabilities, Design, Operations, and Observations
- Chapter 4: Spectroscopy
- Chapter 5: Imaging
- Chapter 6: Exposure Time Calculations
- Chapter 7: Feasibility and Detector Performance
-
Chapter 8: Target Acquisition
- • 8.1 Introduction
- • 8.2 STIS Onboard CCD Target Acquisitions - ACQ
- • 8.3 Onboard Target Acquisition Peakups - ACQ PEAK
- • 8.4 Determining Coordinates in the International Celestial Reference System (ICRS) Reference Frame
- • 8.5 Acquisition Examples
- • 8.6 STIS Post-Observation Target Acquisition Analysis
- Chapter 9: Overheads and Orbit-Time Determination
- Chapter 10: Summary and Checklist
- Chapter 11: Data Taking
-
Chapter 12: Special Uses of STIS
- • 12.1 Slitless First-Order Spectroscopy
- • 12.2 Long-Slit Echelle Spectroscopy
- • 12.3 Time-Resolved Observations
- • 12.4 Observing Too-Bright Objects with STIS
- • 12.5 High Signal-to-Noise Ratio Observations
- • 12.6 Improving the Sampling of the Line Spread Function
- • 12.7 Considerations for Observing Planetary Targets
- • 12.8 Special Considerations for Extended Targets
- • 12.9 Parallel Observing with STIS
- • 12.10 Coronagraphic Spectroscopy
- • 12.11 Coronagraphic Imaging - 50CORON
- • 12.12 Spatial Scans with the STIS CCD
-
Chapter 13: Spectroscopic Reference Material
- • 13.1 Introduction
- • 13.2 Using the Information in this Chapter
-
13.3 Gratings
- • First-Order Grating G750L
- • First-Order Grating G750M
- • First-Order Grating G430L
- • First-Order Grating G430M
- • First-Order Grating G230LB
- • Comparison of G230LB and G230L
- • First-Order Grating G230MB
- • Comparison of G230MB and G230M
- • First-Order Grating G230L
- • First-Order Grating G230M
- • First-Order Grating G140L
- • First-Order Grating G140M
- • Echelle Grating E230M
- • Echelle Grating E230H
- • Echelle Grating E140M
- • Echelle Grating E140H
- • PRISM
- • PRISM Wavelength Relationship
-
13.4 Apertures
- • 52X0.05 Aperture
- • 52X0.05E1 and 52X0.05D1 Pseudo-Apertures
- • 52X0.1 Aperture
- • 52X0.1E1 and 52X0.1D1 Pseudo-Apertures
- • 52X0.2 Aperture
- • 52X0.2E1, 52X0.2E2, and 52X0.2D1 Pseudo-Apertures
- • 52X0.5 Aperture
- • 52X0.5E1, 52X0.5E2, and 52X0.5D1 Pseudo-Apertures
- • 52X2 Aperture
- • 52X2E1, 52X2E2, and 52X2D1 Pseudo-Apertures
- • 52X0.2F1 Aperture
- • 0.2X0.06 Aperture
- • 0.2X0.2 Aperture
- • 0.2X0.09 Aperture
- • 6X0.2 Aperture
- • 0.1X0.03 Aperture
- • FP-SPLIT Slits 0.2X0.06FP(A-E) Apertures
- • FP-SPLIT Slits 0.2X0.2FP(A-E) Apertures
- • 31X0.05ND(A-C) Apertures
- • 0.2X0.05ND Aperture
- • 0.3X0.05ND Aperture
- • F25NDQ Aperture
- 13.5 Spatial Profiles
- 13.6 Line Spread Functions
- • 13.7 Spectral Purity, Order Confusion, and Peculiarities
- • 13.8 MAMA Spectroscopic Bright Object Limits
-
Chapter 14: Imaging Reference Material
- • 14.1 Introduction
- • 14.2 Using the Information in this Chapter
- 14.3 CCD
- 14.4 NUV-MAMA
-
14.5 FUV-MAMA
- • 25MAMA - FUV-MAMA, Clear
- • 25MAMAD1 - FUV-MAMA Pseudo-Aperture
- • F25ND3 - FUV-MAMA
- • F25ND5 - FUV-MAMA
- • F25NDQ - FUV-MAMA
- • F25QTZ - FUV-MAMA, Longpass
- • F25QTZD1 - FUV-MAMA, Longpass Pseudo-Aperture
- • F25SRF2 - FUV-MAMA, Longpass
- • F25SRF2D1 - FUV-MAMA, Longpass Pseudo-Aperture
- • F25LYA - FUV-MAMA, Lyman-alpha
- • 14.6 Image Mode Geometric Distortion
- • 14.7 Spatial Dependence of the STIS PSF
- • 14.8 MAMA Imaging Bright Object Limits
- Chapter 15: Overview of Pipeline Calibration
- Chapter 16: Accuracies
-
Chapter 17: Calibration Status and Plans
- • 17.1 Introduction
- • 17.2 Ground Testing and Calibration
- • 17.3 STIS Installation and Verification (SMOV2)
- • 17.4 Cycle 7 Calibration
- • 17.5 Cycle 8 Calibration
- • 17.6 Cycle 9 Calibration
- • 17.7 Cycle 10 Calibration
- • 17.8 Cycle 11 Calibration
- • 17.9 Cycle 12 Calibration
- • 17.10 SM4 and SMOV4 Calibration
- • 17.11 Cycle 17 Calibration Plan
- • 17.12 Cycle 18 Calibration Plan
- • 17.13 Cycle 19 Calibration Plan
- • 17.14 Cycle 20 Calibration Plan
- • 17.15 Cycle 21 Calibration Plan
- • 17.16 Cycle 22 Calibration Plan
- • 17.17 Cycle 23 Calibration Plan
- • 17.18 Cycle 24 Calibration Plan
- • 17.19 Cycle 25 Calibration Plan
- • 17.20 Cycle 26 Calibration Plan
- • 17.21 Cycle 27 Calibration Plan
- • 17.22 Cycle 28 Calibration Plan
- • 17.23 Cycle 29 Calibration Plan
- • 17.24 Cycle 30 Calibration Plan
- • 17.25 Cycle 31 Calibration Plan
- • 17.26 Cycle 32 Calibration Plan
- Appendix A: Available-But-Unsupported Spectroscopic Capabilities
- • Glossary