MARS: S putovanja rovera OPPORTUNITY

Eroo wrote:Nevjerojatno stabilno i sunčano vrijeme za ovo doba na Marsu. 

[th]Sol B/[/th][th]Opacity[/th]

4969	****
4970	0.46
4971	0.48
4972	0.52
4973	0.43
4974	0.46
4975	0.40
4976	0.47
4977	0.42
4978	0.46

As of Sol 5038 (March 27, 2018), the solar array energy production was 670 watt-hours with an atmospheric opacity (Tau) of 0.524 and an improved solar array dust factor of 0.830.

Nevjerojatno. Elektrike ima i za vrtanje, a sve zahvaljujući prirodnom čišćenju solarnih panela.
Dust factor of 0.830 ukazuje upravo na to. Prašina je s većeg dijela solarnih panela "odstranjena"...

sol 5057   (panorama Damia Bouic)

sol 5070

sol 5083... 

click image upload

[th]Sol B/[/th][th]Opacity[/th]

5097	0.65
5098	0.64
5099	0.67
5100	0.64
5101	0.60
5102	0.60
5103	0.61
5104	1.55
5105	****
5106	2.12

Opacity 2,12...oblaci prašine zakrivaju sunce...opasna situacija za vozilo.

"Dust levels in Gale crater are normal, but Opportunity Rover has had to suspend operations because of a local dust storm with less than 1% of the available sunlight now reaching its solar panels. Detailed NASA/JPL report."

Greška, ne radi se o krateru Gale  već o krateru Endeavour. U krateru Gale je Curiosity.
No, nebitno. Kao što sam i predpostavio došlo je do problema kad se mora isključiti određene funkcije iz rada , jer je proizvodnja el. energije očigledno drastično pala.
Ako lokalna oluja potraje duže moglo bi doći i do onoga najgoreg - gubitka vozila.

[th]Sol B/[/th][th]Opacity[/th]

5102	0.60
5103	0.61
5104	1.55
5105	1.55
5106	2.12
5107	4.90
5108	-1.00
5109	8.70
5110	-1.00
5111	10.80

"Sunday's transmission was especially good news considering the dust storm has intensified in the past several days. A dark, perpetual night has settled over the rover's location in Mars' Perseverance Valley. The storm's atmospheric opacity — the veil of dust blowing around, which can blot out sunlight — is now much worse than a 2007 storm that Opportunity weathered. The previous storm had an opacity level, or tau, somewhere above 5.5; this new storm had an estimated tau of 10.8 as of Sunday morning."

https://mars.nasa.gov/news/8348/opportunity-hunkers-down-during-dust-storm/


Praktično se skoro ne vidi ni prst pred okom...nažalost, mislim da mu nema spasa.

OPPORTUNITY UPDATE:  Regional Dust Storm is Affecting Opportunity
- sols 5101 to 5107, May 30, 2018 - June 6, 2018:
Opportunity is halfway down in "Perseverance Valley" on the west rim of Endeavour Crater.

A nearby, regional dust storm is affecting Opportunity. The first indication of a dust storm 621.37 miles (1000 kilometers) away from Opportunity was received on Friday evening, well after the three-sol plan to operate Opportunity through the weekend was developed. Subsequent weather reports from Mars by the Mars Reconnaissance Orbiter (MRO) and Mars Color Imager (MARCI) team indicated a persisting storm, but still well away from Opportunity but affecting the atmospheric opacity over the rover site.

In response, on Monday, June 4, 2018 and Tuesday, June 5, 2018 (Sols 5106 and 5107), two low-power plans were developed for Opportunity. Since then the atmosphere over the rover has continued to deteriorate. On Sol 5105 (June 3, 2018; the last sol of the weekend plan), Opportunity's solar arrays generated 468 watt-hours of energy with an atmospheric opacity (tau) of around 1.0.

On Sol 5106 (June 4, 2018), energy was down to 345 watt-hours with a tau of 2.1. Additionally, on Sol 5107 (June 6, 2018), the energy dropped further to 133 watt-hours. We were unable to get a measurement of tau on Sol 5107 (June 6, 2018), but it is estimated to be above 3.0. Opportunity has not seen this level of atmospheric opacity in over a decade.

In Sol 5108 (June 7, 2018) the rover team crafted a minimum-power two-sol plan, where the rover wakes on the first sol only to receive the morning commands then sleeps to the next sol with a brief wake-up in the morning. Subsequently, naps until the afternoon for a quick atmospheric measurement with the Panoramic Camera (Pancam) then a brief communication session with MRO and back to sleep.

The confirming beep on the receipt of the command load was received Thursday morning, but the next time to hear from the rover will be Friday morning. The rover team will likely continue this low-power strategy for Opportunity until conditions improve.

Total odometry is 28.06 miles (45.16 kilometers).

June 13, 2018



Shades of Martian Darkness

Science operations for NASA's Opportunity rover have been temporarily suspended as it waits out a dust storm on Mars. This series of images shows simulated views of a darkening Martian sky blotting out the Sun from NASA's Opportunity rover's point of view, with the right side simulating Opportunity's current view in the global dust storm (June 2018). The left starts with a blindingly bright mid-afternoon sky, with the sun appearing bigger because of brightness. The right shows the Sun so obscured by dust it looks like a pinprick. Each frame corresponds to a tau value, or measure of opacity: 1, 3, 5, 7, 9, 11.
NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Mars Exploration Rover Project for NASA's Science Mission Directorate, Washington.
Image Credit: NASA/JPL-Caltech/TAMU
For more information about Opportunity, visit http://www.nasa.gov/rovers and http://marsrovers.jpl.nasa.gov.
Last Updated: June 13, 2018
Editor: Sarah Loff

OPPORTUNITY UPDATE:  Opportunity Waits Out Growing Dust Storm
- sols 5108 to 5111, June 7, 2018 - June 10, 2018:
The dust storm that is affecting Opportunity has greatly intensified.

The atmospheric opacity (tau) over the rover has increased to a record 10.8 on Sol 5111 (June 10, 2018). Power levels on the rover have dropped to a record low of ~22 watt hours. As expected, Opportunity has tripped a low-power fault and gone silent. A 72-hour spacecraft emergency was declared on the afternoon of Sol 5111 (June 10, 2018), anticipating the low-power fault.

The project team is listening each day during the expected fault window time with the Deep Space Network (DSN). No signal has been detected since the last normal communication on Sol 5111 (June 10, 2018). It is expected that we will not hear from the rover until the storm subsides over the rover site.

Total odometry is 28.06 miles (45.16 kilometers).

________________________

To je gotovo, nema tu spasa više...

Kao što doznajem , zadnje javljanje vozila je bilo da je proizvodnja električne energije pala na 22 Wh, što je donja granica potrebne energije za rad njegovog sata.Pošto pješačana oluja ne prestaje to znači da je električna energija nastavila opadati, a to znači prestanak rada sata. Na sat su vezane ostale vitalne funkcije itd...Što se mene tiče vozilo je zauvijek zaspalo.
Bilo mi je u čast družiti se s Oppy... Doviđenja...