I do hope we won't have another Kepler debacle. I hope a reasonable period will be decided, and then the data will be distributed to 3rd parties and the public.
Quote from: Svetoslav on 07/04/2018 08:47 amI do hope we won't have another Kepler debacle. I hope a reasonable period will be decided, and then the data will be distributed to 3rd parties and the public. There is a difference between early results released by the team and when the data will be publicly available. The data won't be public until the beginning of next year.
TESS is supposed to release data quickly for ground based RV follow up. Recent papers from RV surveys that I've read talk about December as the first release. No big deal if it doesn't happen until the next month (anyway, let the staff have a holiday at that time of year) Releases should be regular from then.
An astronomer who is my source and is working with Tess data posted yesterday this photo of preliminary results from the mission in a seminar yesterday, so I guess everything is OK...
Hmm... is there something wrong with TESS?Via Eric Berger: The @NASA_TESS mission has been awfully quiet of late. I inquired today if anything was wrong. The totality of the reply I received is thus:"NASA will be issuing an update on TESS tomorrow (Wednesday) by noon EDT. I will send you a link when itís live."https://twitter.com/SciGuySpace/status/1016785065311956992
July 11, 2018NASAís TESS Spacecraft Continues Testing Prior to First ObservationsAfter a successful launch on April 18, 2018, NASAís newest planet hunter, the Transiting Exoplanet Survey Satellite, is currently undergoing a series of commissioning tests before it begins searching for planets. The TESS team has reported that the spacecraft and cameras are in good health, and the spacecraft has successfully reached its final science orbit. The team continues to conduct tests in order to optimize spacecraft performance with a goal of beginning science at the end of July. Every new mission goes through a commissioning period of testing and adjustments before beginning science operations. This serves to test how the spacecraft and its instruments are performing and determines whether any changes need to be made before the mission starts observations.TESS is a NASA Astrophysics Explorer mission led and operated by MIT in Cambridge, Massachusetts, and managed by NASAís Goddard Space Flight Center in Greenbelt, Maryland. Dr. George Ricker of MITís Kavli Institute for Astrophysics and Space Research serves as principal investigator for the mission. Additional partners include Northrop Grumman, based in Falls Church, Virginia; NASAís Ames Research Center in Californiaís Silicon Valley; the Harvard-Smithsonian Center for Astrophysics in Cambridge, Massachusetts; MITís Lincoln Laboratory in Lexington, Massachusetts; and the Space Telescope Science Institute in Baltimore. More than a dozen universities, research institutes and observatories worldwide are participants in the mission.For the latest updates on TESS, visit nasa.gov/tess.
NASAís Transiting Exoplanet Survey Satellite has started its search for planets around nearby stars, officially beginning science operations on July 25, 2018. TESS is expected to transmit its first series of science data back to Earth in August, and thereafter periodically every 13.5 days, once per orbit, as the spacecraft makes it closest approach to Earth. The TESS Science Team will begin searching the data for new planets immediately after the first series arrives.
I had a chance to ask Jeff Volosin about comparing Kepler transits with TESS versions of the same planet to help calibrate analysis of both and he said NASA declined because they wanted to keep TESS on the southern hemisphere for now. Next year they should have a chance to get some Kepler targets with TESS for comparison.
* The quality of imagery has been much better than expected: the science they'd expected to be reserved for 20,000 stars they'd specially selected per section instead should be doable on just about any star visible in the field of view.* Even having to dump momentum from the reaction wheels three times as often (three times per orbit instead of once), he expects to have over 100 years of propellant reserves. Which is nice. The numbers here are 40kg of propellant (thanks to very good insertion ops), 10 grams of propellant per momentum dump maneuver.
* TESS images 24x90 degrees of sky at 0.5fps for ~28 days per section. Volosin expects that to be handy for a lot of folks. E.g. he expects to record a supernova from start to finish at 0.5fps.
So far as I understand it, that's not how their cameras/sampling work.
Quote from: deruch on 09/01/2018 06:03 pmSo far as I understand it, that's not how their cameras/sampling work. Yup. Your description is correct ... short cadence image every 2 minutes; FFI every 30 minutes.Images are downlinked every 14 days, which limits the usefulness as a supernova alert mechanism.--- Tony