AO-73 : Funcube-1

Rotation Period

15 Oct 2021 = 29.3 seconds (from averaged panel temperatures)
16 Oct 2021 = 27.9 seconds (from averaged panel temperatures)
17 Oct 2021 = 41.2 seconds (from averaged panel temperatures)
18 Oct 2021 = 55.5 seconds (from averaged panel temperatures)
19 Oct 2021 = 102.3 seconds (from averaged panel temperatures)
20 Oct 2021 = 149.4econds (from averaged panel temperatures)
21 Oct 2021 = 169.5 seconds (from averaged panel temperatures)

AO-73 has now settled into a stable attitude and is spinning about the Z-Z axis in the reversed direction.

73 de Colin VK5HI.

AO-73 : Funcube-1

Rotation Period

08 Oct 2021 = 15.4 seconds (from averaged panel temperatures)
09 Oct 2021 = 19.2 seconds (from averaged panel temperatures)
10 Oct 2021 = 17.5 seconds (from averaged panel temperatures)
11 Oct 2021 = 18.1 seconds (from averaged panel temperatures)
12 Oct 2021 = 21.1 seconds (from averaged panel temperatures)
13 Oct 2021 = 23.9 seconds (from averaged panel temperatures)
14 Oct 2021 = 25.0 seconds (from averaged panel temperatures)

AO-73 has now entered the phase where it is spinning in a very complex attitude about the Z-Z axis with a secondary rotation about the unbalanced Centre of Inertia of AO-73.

73 de Colin VK5HI.

AO-73 : Funcube-1

Rotation Period

01 Oct 2021 = 17.5 seconds (from averaged panel temperatures)
02 Oct 2021 = 16.1 seconds (from averaged panel temperatures)
03 Oct 2021 = 15.7 seconds (from averaged panel temperatures)
04 Oct 2021 = 14.9 seconds (from averaged panel temperatures)
05 Oct 2021 = 14.3 seconds (from averaged panel temperatures)
06 Oct 2021 = 14.5 seconds (from averaged panel temperatures)
07 Oct 2021 = 14.8 seconds (from averaged panel temperatures)

AO-73 has now entered the phase where it is spinning in a very complex attitude about the Z-Z axis in the normal spin direction with a secondary rotation about the unbalanced Centre of Inertia of AO-73.

73 de Colin VK5HI.

AO-73 : Funcube-1

Rotation Period

24 Sep 2021 = 29.3 seconds (from averaged panel temperatures)
25 Sep 2021 = 26.7 seconds (from averaged panel temperatures)
26 Sep 2021 = 24.9 seconds (from averaged panel temperatures)
27 Sep 2021 = 23.1 seconds (from averaged panel temperatures)
28 Sep 2021 = 21.8 seconds (from averaged panel temperatures)
29 Sep 2021 = 20.6 seconds (from averaged panel temperatures)
30 Sep 2021 = 18.9 seconds (from averaged panel temperatures)

AO-73 continues to spin in a stable attitude about the Z-Z axis in the normal spin direction.

73 de Colin VK5HI.

AO-73 : Funcube-1

Rotation Period

17 Sep 2021 = 50.5 seconds (from averaged panel temperatures)
18 Sep 2021 = 47.9 seconds (from averaged panel temperatures)
19 Sep 2021 = 44.7 seconds (from averaged panel temperatures)
20 Sep 2021 = 41.0 seconds (from averaged panel temperatures)
21 Sep 2021 = 37.8 seconds (from averaged panel temperatures)
22 Sep 2021 = 35.1 seconds (from averaged panel temperatures)
23 Sep 2021 = 31.7 seconds (from averaged panel temperatures)

AO-73 is currently spinning in a stable attitude about the Z-Z axis in the normal spin direction.
AO-73 is now operating in continuous sun for approximately two months.

73 de Colin VK5HI.

AO-73 : Funcube-1

Rotation Period

10 Sep 2021 = 24.3 seconds (from averaged panel temperatures)
11 Sep 2021 = 26.3 seconds (from averaged panel temperatures)
12 Sep 2021 = 32.1 seconds (from averaged panel temperatures)
13 Sep 2021 = 39.3 seconds (from averaged panel temperatures)
14 Sep 2021 = 44.5 seconds (from averaged panel temperatures)
15 Sep 2021 = 50.9 seconds (from averaged panel temperatures)
16 Sep 2021 = 50.5 seconds (from averaged panel temperatures)

Special thanks to Terry VK5GU and Colin VK3HBF for their continued assistance with downloads this week.

AO-73 continues to maintain a complex attitude the result of normal spin rotation about the Z-Z axis with the Z-Z axis slowly rotating about AO-73’s unbalanced Moment of Inertia.

AO-73 will enter a short period of continuous solar illumination commencing 23rd September.
The AMSAT-UK Team has placed AO-73 in High Power Telemetry download mode for this short period of continuous sun.

73 de Colin VK5HI.

AO-73 : Funcube-1

Rotation Period

03 Sep 2021 = 20.8 seconds (from averaged panel temperatures)
04 Sep 2021 = 20.1 seconds (from averaged panel temperatures)
05 Sep 2021 = 18.4 seconds (from averaged panel temperatures)
06 Sep 2021 = 19.7 seconds (from averaged panel temperatures)
07 Sep 2021 = 19.7 seconds (from averaged panel temperatures)
08 Sep 2021 = 20.2seconds (from averaged panel temperatures)
09 Sep 2021 = 22.2 seconds (from averaged panel temperatures)

Special thanks to Terry VK5GU and Colin VK3HBF for their continued assistance with downloads this week.

AO-73 continues to maintain a complex attitude the result of normal spin rotation about the Z-Z axis with the Z-Z axis slowly rotating about AO-73’s unbalanced Moment of Inertia. Over the last 3 days the rotation about the unbalanced MOI has noted to have become increasingly significant.
The most recent download over VK at 0623utc 10th September by Colin VK3HBF highlighting that attitude is as follows :-

73 de Colin VK5HI.

AO-73 : Funcube-1

Rotation Period

27 Aug 2021 = 31.4 seconds (from averaged panel temperatures)
28 Aug 2021 = 29.6 seconds (from averaged panel temperatures)
29 Aug 2021 = 27.8 seconds (from averaged panel temperatures)
30 Aug 2021 = 26.5 seconds (from averaged panel temperatures)
31 Aug 2021 = 25.0 seconds (from averaged panel temperatures)
01 Sep 2021 = 23.1 seconds (from averaged panel temperatures)
02 Sep 2021 = 21.5 seconds (from averaged panel temperatures)

Special thanks to Terry VK5GU and Colin VK3HBF for their continued assistance with downloads this week.

AO-73 continues to maintain a complex attitude the result of normal spin rotation about the Z-Z axis with the Z-Z axis slowly rotating about AO-73’s unbalanced Moment of Inertia.

73 de Colin VK5HI.

AO-73 : Funcube-1

Rotation Period

20 Aug 2021 = 20.1 seconds (from averaged panel temperatures)
21 Aug 2021 = 21.3 seconds (from averaged panel temperatures)
22 Aug 2021 = 27.5 seconds (from averaged panel temperatures)
23 Aug 2021 = 32.4 seconds (from averaged panel temperatures)
24 Aug 2021 = 33.9 seconds (from averaged panel temperatures)
25 Aug 2021 = 33.4 seconds (from averaged panel temperatures)
26 Aug 2021 = 32.5 seconds (from averaged panel temperatures)

Special thanks to Terry VK5GU and Colin VK3HBF for their continued assistance with downloads this week.

AO-73 continues to maintain a complex attitude the result of normal spin rotation about the Z-Z axis with the Z-Z axis slowly rotating about AO-73’s unbalanced Moment of Inertia.

73 de Colin VK5HI.

CUTE telemetry beacon description

In preparation for the CUTE cubesat launch on September 16, 2021, I’d like to get the CUTE beacon packet contents published prior to launch.

CUTE_beacon_definition

Karen Bryant
University of Colorado

CUTE is a 6U CubeSat whose bus and primary subsystems (including the attitude control system, GPS receiver, communication systems, electrical power system, and solar array) are provided by Blue Canyon Technologies.
CUTE will have a 1-year mission life time and will launch in 2020 and use near-ultraviolet (NUV) transmission spectroscopy from 255 to 330 nanometers (nm) to characterize the composition and mass-loss rates of exoplanet atmospheres. CUTE measures how the NUV light from the host star is changed as the exoplanet transits in front of the star and passes through the planet’s atmospheres. CUTE’s spectrally resolved lightcurve will provide constraints on the composition and escape rates of these atmospheres, and may provide the first concrete evidence for magnetic fields on extrasolar planets.
The keys to unlocking the diagnostic potential of these systems are spectral coverage in the appropriate bandpass and the ability to follow the systems for several orbital periods. CUTE is designed to provide exactly that – low resolution spectroscopy of critical atmospheric tracers (Fe II, Mg II, Mg I, OH) that are inaccessible from the ground, and a dedicated mission architecture that enables the survey required to characterize atmospheric structure and variability on these worlds.
CUTE was constructed at the University of Colorado, Boulder and the Laboratory for Atmospheric and Space Physics (LASP).

https://lasp.colorado.edu/home/cute/what-is-a-cubesat/