1 / 14

RSS Commissioning Call

RSS Commissioning Call. Announcement : http://www.salt.ac.za/proposing/call-for-rss-commissioning-proposals / Modes: long-slit, multi-object and Fabry-Perot spectroscopy Criteria Applicability for "exercising" the respective instrument modes

rollo
Download Presentation

RSS Commissioning Call

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. RSS Commissioning Call • Announcement: • http://www.salt.ac.za/proposing/call-for-rss-commissioning-proposals/ • Modes: long-slit, multi-object and Fabry-Perot spectroscopy • Criteria • Applicability for "exercising" the respective instrument modes • Object position(s) and how well filled an observing queue will be • Practicality • Selection: Instr Team, SALT Scientist. Not “charged” • Dates • Proposal deadline: 15 Jan. Use online proposal tool PIPT 1.0 • Observations: Feb - April Galaxies Lunch

  2. SALT/ RSS • SALT features • very large aperture • good field of view (8 arcmin) • excellent ultraviolet throughput • queue scheduling • modest imaging • RSS: emphasize unique observing modes that do not require excellent imaging • UV spectroscopy down to 3200 Ǻ (rare on large telescopes) • higher resolution: high-throughput grating 3200 - 9000 Ǻ;Fabry-Perot 4300 - 9000 Ǻ (Visible Beam); later - 1.7 μm (NIR) • polarimetry (circular and linear) (very rare) • high-speed detector mode (very rare) Galaxies Lunch

  3. Optics • All-refractive UV optics for high throughput • At prime focus for UV and full-field access • NIR upgrade path: simultaneous 3200 Ǻ – 1.7 μ Galaxies Lunch

  4. Mechanisms 6-Grating Magazine Polarizing Beamsplitter(slide) 40-Slitmask Magazine 2 Fabry-Perot Etalons (slides) 3 CCD Mosaic Detector Shutter Camera Articulation 0 - 100° 2 Polarimeter Waveplates (slides) 20-Filter Magazine Galaxies Lunch

  5. RSS on SALT Detector Camera Articulation Rail Etalons Collimator Galaxies Lunch

  6. Fabry-Perot etalons (scans wavelength) Many wavelengths Perseus A in Hydrogen Light Perseus Cluster of Galaxies Imaging/ Fabry-Perot Spectroscopy Filters Galaxies Lunch

  7. Filters "VPH" Grating disperses wavelengths Up to 40 Spectra Hubble Deep Field (South) Longslit/ Multi-Object Grating Spectroscopy Slitmask selects objects Galaxies Lunch

  8. NGC 2023 = λ/Δλ High Efficiency with Volume Phase Holographic Gratings Resolution vs wavelength for 1.25 arcsec slit "Littrow": grating angle = 1/2 camera articulation Constant Efficiency Contours "Bird" NGC 6822 Galaxies Lunch

  9. Detailed Instrument Info • Website: • http://www.sal.wisc.edu/PFIS/ • Operations/Observer’s Guide • Some RSS data previously obtained: Galaxies Lunch

  10. I Hα σ v P-V Longslit Data - the "Bird" • Väisänen, et al 2008 MNRAS 384, 886. • ULIRG, z = 0.048 • grating 1800 l/mm, artic 72º, 1.5" slit: • R = 2800 5860-7150 Å • 3 slit positions • 900 – 1500 sec exposures each • Ne and CuAr arcs, 0.05 Å (2.5 km/s) accuracy Galaxies Lunch

  11. P-V High Res Data: Fluorescence in Reflection Nebulae • Nordsieck (astroph 0809:3802) in AstroPol08 • First detection of atomic fluorescence lines in neutral medium • Prepare for spectropolarimetry: geometry and magnetic field • Robert Stobie Spectrograph on SALT 11m: • NGC2023 RN, HD37903 B1.5V central star • 0.6”x8’ slit, 1st order, R = 7500 - 9500 • ~1000 Ang coverage blue, yellow, red • Many fluorescence lines found! Inner 2’ of nebula, within PDR: Galaxies Lunch

  12. MOS Test Field Courtesy: Petri Väisänen Galaxies Lunch

  13. Position Reference Stars HII and PNe MOS Test Run Spectra 4080 A 7180 A NGC6822 – Oct 20 900 l/mm grating, artic 30º, R = 1200 Galaxies Lunch

  14. Proposing • Visibility Tool • Instrument Simulator • Mask Tool • Proposal Tool Galaxies Lunch

More Related