Spitzer Space Telescope: Status & Opportuni4es Lisa Storrie- Lombardi & Sean Carey Caltech/IPAC Spitzer DPS 48 - Pasadena 17 October 2016
Mission Status Spitzer Beyond Phase Oct 2016 Mar 2019 >inal 2.5 years of the mission operate through JWST commissioning Observatory is in excellent health Cycle- 13 selected in August 2 years of observations 14,753 hours DPS 48 Pasadena October 2016 Spitzer 2
Observing with Spitzer NASA s Infrared Great Observatory Launched 25 August 2003 85 cm telescope Calibrated data products provided through archive Earth- trailing solar orbit Capabilities unmatched until JWST DPS 48 Pasadena October 2016 Spitzer 3
Spitzer s Orbit 1.50 AU circle of radius 1 AU from Sun 0.50 AU Earth Oct 2018 Nov 2016 Cryogen Depleted IOC/SV Mission Lifetime Req't Thru Cryo Depletion Warm Mission Distance from Earth and geometry modify spacecraft heating, battery charging and downlink rates. DPS 48 Pasadena October 2016 Spitzer 4
Observatory Capabilities Unique vantage point with respect to Earth (currently 1.5 AU away) Different path length through Zodiacal dust cloud Different viewing angle for NEAs ~7000 hours/year available for science observations Can observe continuously for ~72 hours Can observe targets quasi- continuously for 38 or more days (Need 2-4 hours gaps for downlinks every 24-72 hours) DPS 48 Pasadena October 2016 Spitzer 5
Instrument Capabilities InfraRed Array Camera (IRAC) 3.6 and 4.5 µm with 5 arcmin FOVs ~1.6 arcsec resolution 1σ sensitivities in 100 seconds 21.2/20.4 at 3.6/4.5 µm Saturate at 2 mag Solar system science built into observatory Track at 1 arcsec / second Moving target support in observing mode Precovery tool in the archive DPS 48 Pasadena October 2016 Spitzer 6
Photometric Stability Long- term Absolute photometry stable to < 0.5% over timescale of years [Krick et al. 2015] Short- term Transit depth of GJ1214b to precision of 40 ppm (radius to ~28 km) [Fraine et al. 2013] Relative photometry < 100 ppm is repeatable Repeatability and Accuracy of Exoplanet Eclipse Depths Measured with Post- cryogenic Spitzer [Ingalls et al. 2016] DPS 48 Pasadena October 2016 Spitzer 7
Challenging Targets 2011 MD potential ARRM target Observed for 19.9 hours, covering a distance of 17.5 arcmin on the sky 2.2σ detection (0.60+/- 0.27µJy) of asteroid Inferred diameter is 6m [4-10m is the range] density 1.1 g/cm 3 [Mommert et al. 2014] DPS 48 Pasadena October 2016 Spitzer 8
Spot Tool Planning Observations De>ine targets by NAIF ID or send orbital parameters Design the observation timing, dithering, mapping Visualize the >ield and observation Can de>ine shadow observations De>ine timing, grouping, sequence constraints DPS 48 Pasadena October 2016 Spitzer 9
Spot: Select a Target Asteroid (2867) Steins DPS 48 Pasadena October 2016 Spitzer 10
Spot: Create an Observation DPS 48 Pasadena October 2016 Spitzer 11
Spot: Visualize the Observation DPS 48 Pasadena October 2016 Spitzer 12
Cycle- 13 Science Overview Solar System Science 2071 hrs C11-12: 2023 hrs C1 10: 2034 hrs DPS 48 Pasadena October 2016 Spitzer 13
Cycle- 13 Highlights Largest solar system program of the mission 1750 hours David Trilling NEOLegacy: The Ultimate Spitzer Survey of NEOs 2/3 of submitted solar system programs selected Science Category Hours PI Ins3tu3on Asteroids 10.4 E. MacLennan Tennessee Comets 268.7 M. Kelley Maryland KBOs 12.0 N. Pinilla- Alonso UCF NEOs 30.0 M. Mommert NAU DPS 48 Pasadena October 2016 Spitzer 14
Future Observing Opportunities No more big proposal calls ~3,000 hours of Director s Discretionary Time (DDT) available through March 2019 3 Structured DDT Reviews Time Critical DDT proposals may be submitted at any time. DPS 48 Pasadena October 2016 Spitzer 15
Structured DDT Reviews Review Deadlines Deadline Hours Available February 28, 2017 ~ 500 September 12, 2017 ~ 500 April 10, 2018 ~ 2,000 New and emerging science, JWST prep is a high priority Must include a justi>ication for why the program could not have been submitted for C13 DPS 48 Pasadena October 2016 Spitzer 16
DDT Proposal Submission Proposal templates & guidelines available in the online proposal kit http://ssc.spitzer.caltech.edu/warmmission/propkit/ DDT submission website https://cat.ipac.caltech.edu/ddt/application.html Any Questions? help@spitzer.caltech.edu DPS 48 Pasadena October 2016 Spitzer 17