Re: [time-nuts] True Time Nut Mission: NASA's Deep Space Atomic Clock (DSAC)
Yeah -- delays happen. The DSAC is part of the US Air Force STP-2 program. STP-2 launch was awarded to SpaceX in December, 2012. But the Falcon Heavy only completed it's first launch earlier this week, and instead of sending a customer payload they send a Tesla to past the orbit of Mars. Correcting my earlier post, the new launch date for STP-2 appears to be "no earlier than" June, 2018. I'm relying on this source for launch estimates: https://spaceflightnow.com/launch-schedule/ -- Bill Byrom N5BB On Fri, Feb 9, 2018, at 7:54 AM, jimlux wrote: > On 2/8/18 8:55 PM, Bill Byrom wrote: > > After the successful Falcon Heavy launch earlier this week, it appears that > > the Deep Space Atomic Clock (DSAC) is now scheduled to go up in June 2018 > > on a Falcon Heavy carrying the US Air Force STP-2 test payloads. > > https://www.nasa.gov/feature/goddard/2018/nasa-tests-atomic-clock-for-deep-space-navigation > > > > For a fun video about this project suitable for non-time-nuts, see: > > https://www.nasa.gov/mission_pages/tdm/clock/sammy-the-second.html > > > > "The Deep Space Atomic Clock is being readied for flight next year. > Moving hardware from the laboratory to space meant conquering a number > of technological challenges." > > A number of really hard technological challenges. Aside from taking a > bench full of gear and squeezing it down to a few liters. > > Note the date on an earlier note: > "DSAC is scheduled for launch in mid-2016" > > > > > >> Date: Tue, 12 Jan 2016 17:31:26 -0600 > >> > >> Upcoming Event: Deep Space Atomic Clock > >> Jan. 14, 2016, at 7 p.m. PT (10 p.m. ET, 0300 UTC) > >> You can watch this event via USTREAM: http://www.ustream.tv/NASAJPL2 > >> > >> Speakers: > >> Todd Ely, DSAC Principal Investigator, JPL > >> Allen H. Farrington, DSAC Project Manager, JPL > >> http://www.nasa.gov/mission_pages/tdm/clock/clock_overview.html#.VpWMgK9OKK0 > >> Atomic clocks are an integral, yet almost invisible component of modern > >> life. > >> For space exploration, they have been the foundational frequency > >> standard for NASA's Deep Space Network. NASA's Deep Space Atomic Clock > >> (DSAC) Technology Demonstration Mission, led by the Jet Propulsion > >> Laboratory, has been maturing the latest Atomic Clock technologies into > >> a smaller package, suitable for installation on a variety of deep space > >> probes to enhance navigation precision and gravity science across the > >> solar system. > >> > >> DSAC is scheduled for launch in mid-2016. > >> Satellite being built by Surrey Satellite Technologies USA, Englewood, > >> CO > >> > >> > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] True Time Nut Mission: NASA's Deep Space Atomic Clock (DSAC)
On 2/8/18 8:55 PM, Bill Byrom wrote: After the successful Falcon Heavy launch earlier this week, it appears that the Deep Space Atomic Clock (DSAC) is now scheduled to go up in June 2018 on a Falcon Heavy carrying the US Air Force STP-2 test payloads. https://www.nasa.gov/feature/goddard/2018/nasa-tests-atomic-clock-for-deep-space-navigation For a fun video about this project suitable for non-time-nuts, see: https://www.nasa.gov/mission_pages/tdm/clock/sammy-the-second.html "The Deep Space Atomic Clock is being readied for flight next year. Moving hardware from the laboratory to space meant conquering a number of technological challenges." A number of really hard technological challenges. Aside from taking a bench full of gear and squeezing it down to a few liters. Note the date on an earlier note: "DSAC is scheduled for launch in mid-2016" Date: Tue, 12 Jan 2016 17:31:26 -0600 Upcoming Event: Deep Space Atomic Clock Jan. 14, 2016, at 7 p.m. PT (10 p.m. ET, 0300 UTC) You can watch this event via USTREAM: http://www.ustream.tv/NASAJPL2 Speakers: Todd Ely, DSAC Principal Investigator, JPL Allen H. Farrington, DSAC Project Manager, JPL http://www.nasa.gov/mission_pages/tdm/clock/clock_overview.html#.VpWMgK9OKK0 Atomic clocks are an integral, yet almost invisible component of modern life. For space exploration, they have been the foundational frequency standard for NASA's Deep Space Network. NASA's Deep Space Atomic Clock (DSAC) Technology Demonstration Mission, led by the Jet Propulsion Laboratory, has been maturing the latest Atomic Clock technologies into a smaller package, suitable for installation on a variety of deep space probes to enhance navigation precision and gravity science across the solar system. DSAC is scheduled for launch in mid-2016. Satellite being built by Surrey Satellite Technologies USA, Englewood, CO ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] True Time Nut Mission: NASA's Deep Space Atomic Clock (DSAC)
After the successful Falcon Heavy launch earlier this week, it appears that the Deep Space Atomic Clock (DSAC) is now scheduled to go up in June 2018 on a Falcon Heavy carrying the US Air Force STP-2 test payloads. https://www.nasa.gov/feature/goddard/2018/nasa-tests-atomic-clock-for-deep-space-navigation For a fun video about this project suitable for non-time-nuts, see: https://www.nasa.gov/mission_pages/tdm/clock/sammy-the-second.html -- Bill Byrom N5BB On Tue, Mar 21, 2017, at 11:36 PM, Bill Byrom wrote: > NASA's Deep Space Atomic Clock test mission is moving toward a late-2017 > launch (don't all projects slip?). The DSAC was just integrated with the > spacecraft. The clock uses a ~40.5 GHz hyperfine transition of mercury > ions. This steers an ovenized crystal USO (Ultra Stable Oscillator) from > FEI with 1-100 sec stability <2e-13 and drift <1e-10/day. A GPS receiver > is also on board: > https://www.jpl.nasa.gov/news/news.php?feature=6784 > > NASA information about the DSAC applications at: > https://www.nasa.gov/mission_pages/tdm/clock/index.html > > Expected DSAC performance (2014 paper). This paper claims an estimated > Allan Deviation of <1e-14 (perhaps 3e-15) at a one day interval when in > space: > https://www.researchgate.net/publication/260036335_Expected_Performance_of_the_Deep_Space_Atomic_Clock_Mission > > > Here are the latest two papers I can find (from Feb 2016): > > ** Deep Space Atomic Clock Technology Demonstration Mission Onboard > Navigation Analog Experiment: > https://www.researchgate.net/publication/293648952_Deep_Space_Atomic_Clock_Technology_Demonstration_Mission_Onboard_Navigation_Analog_Experiment > > ** Preliminary Investigation of Onboard Orbit Determination using Deep > Space Atomic Clock Based Radio Tracking: > https://www.researchgate.net/publication/293648187_Preliminary_Investigation_of_Onboard_Orbit_Determination_using_Deep_Space_Atomic_Clock_Based_Radio_Tracking > > -- > Bill Byrom N5BB > > ----- Original message ----- > From: Gregory Beat <w...@icloud.com> > To: time-nuts@febo.com > Subject: [time-nuts] True Time Nut Mission: NASA's Deep Space Atomic > Clock (DSAC) > Date: Tue, 12 Jan 2016 17:31:26 -0600 > > Upcoming Event: Deep Space Atomic Clock > Jan. 14, 2016, at 7 p.m. PT (10 p.m. ET, 0300 UTC) > You can watch this event via USTREAM: http://www.ustream.tv/NASAJPL2 > > Speakers: > Todd Ely, DSAC Principal Investigator, JPL > Allen H. Farrington, DSAC Project Manager, JPL > http://www.nasa.gov/mission_pages/tdm/clock/clock_overview.html#.VpWMgK9OKK0 > Atomic clocks are an integral, yet almost invisible component of modern > life. > For space exploration, they have been the foundational frequency > standard for NASA's Deep Space Network. NASA's Deep Space Atomic Clock > (DSAC) Technology Demonstration Mission, led by the Jet Propulsion > Laboratory, has been maturing the latest Atomic Clock technologies into > a smaller package, suitable for installation on a variety of deep space > probes to enhance navigation precision and gravity science across the > solar system. > > DSAC is scheduled for launch in mid-2016. > Satellite being built by Surrey Satellite Technologies USA, Englewood, > CO > > > Sent from iPad Air > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] True Time Nut Mission: NASA's Deep Space Atomic Clock (DSAC)
NASA's Deep Space Atomic Clock test mission is moving toward a late-2017 launch (don't all projects slip?). The DSAC was just integrated with the spacecraft. The clock uses a ~40.5 GHz hyperfine transition of mercury ions. This steers an ovenized crystal USO (Ultra Stable Oscillator) from FEI with 1-100 sec stability <2e-13 and drift <1e-10/day. A GPS receiver is also on board: https://www.jpl.nasa.gov/news/news.php?feature=6784 NASA information about the DSAC applications at: https://www.nasa.gov/mission_pages/tdm/clock/index.html Expected DSAC performance (2014 paper). This paper claims an estimated Allan Deviation of <1e-14 (perhaps 3e-15) at a one day interval when in space: https://www.researchgate.net/publication/260036335_Expected_Performance_of_the_Deep_Space_Atomic_Clock_Mission Here are the latest two papers I can find (from Feb 2016): ** Deep Space Atomic Clock Technology Demonstration Mission Onboard Navigation Analog Experiment: https://www.researchgate.net/publication/293648952_Deep_Space_Atomic_Clock_Technology_Demonstration_Mission_Onboard_Navigation_Analog_Experiment ** Preliminary Investigation of Onboard Orbit Determination using Deep Space Atomic Clock Based Radio Tracking: https://www.researchgate.net/publication/293648187_Preliminary_Investigation_of_Onboard_Orbit_Determination_using_Deep_Space_Atomic_Clock_Based_Radio_Tracking -- Bill Byrom N5BB - Original message - From: Gregory Beat <w...@icloud.com> To: time-nuts@febo.com Subject: [time-nuts] True Time Nut Mission: NASA's Deep Space Atomic Clock (DSAC) Date: Tue, 12 Jan 2016 17:31:26 -0600 Upcoming Event: Deep Space Atomic Clock Jan. 14, 2016, at 7 p.m. PT (10 p.m. ET, 0300 UTC) You can watch this event via USTREAM: http://www.ustream.tv/NASAJPL2 Speakers: Todd Ely, DSAC Principal Investigator, JPL Allen H. Farrington, DSAC Project Manager, JPL http://www.nasa.gov/mission_pages/tdm/clock/clock_overview.html#.VpWMgK9OKK0 Atomic clocks are an integral, yet almost invisible component of modern life. For space exploration, they have been the foundational frequency standard for NASA's Deep Space Network. NASA's Deep Space Atomic Clock (DSAC) Technology Demonstration Mission, led by the Jet Propulsion Laboratory, has been maturing the latest Atomic Clock technologies into a smaller package, suitable for installation on a variety of deep space probes to enhance navigation precision and gravity science across the solar system. DSAC is scheduled for launch in mid-2016. Satellite being built by Surrey Satellite Technologies USA, Englewood, CO Sent from iPad Air ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] True Time Nut Mission: NASA's Deep Space Atomic Clock (DSAC)
Upcoming Event: Deep Space Atomic Clock Jan. 14, 2016, at 7 p.m. PT (10 p.m. ET, 0300 UTC) You can watch this event via USTREAM: http://www.ustream.tv/NASAJPL2 Speakers: Todd Ely, DSAC Principal Investigator, JPL Allen H. Farrington, DSAC Project Manager, JPL http://www.nasa.gov/mission_pages/tdm/clock/clock_overview.html#.VpWMgK9OKK0 Atomic clocks are an integral, yet almost invisible component of modern life. For space exploration, they have been the foundational frequency standard for NASA's Deep Space Network. NASA's Deep Space Atomic Clock (DSAC) Technology Demonstration Mission, led by the Jet Propulsion Laboratory, has been maturing the latest Atomic Clock technologies into a smaller package, suitable for installation on a variety of deep space probes to enhance navigation precision and gravity science across the solar system. DSAC is scheduled for launch in mid-2016. Satellite being built by Surrey Satellite Technologies USA, Englewood, CO Sent from iPad Air ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
