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Mars Dust Storm 2020 11 27

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#1 chrisrnuttall

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Posted 28 November 2020 - 09:45 AM

This is the first night since the 22nd when I have been able to make a drawing, every other night was cloudy except for the 25th which was clear but the seeing was abysmal all evening.

It's been pretty frustrating because the weather isn't doing what the forecasters say it's going to do!shocked.gif 

 

On the 27th there was cloud until 19:30, then a 15 minute clear gap in which this sketch was started, followed by 15 minutes more cloud, then the sky went completely clear with good seeing for the rest of the evening and I was able to quickly finish the drawing.

 

I was able to see good amounts of detail in the Western parts of the disc under steady seeing, the eastern part was harder since contrast there was lower.

The dust lane through the Solis Lacus Region has gone now, and actually a lot of the dust in Erythraeum has cleared too. The main part of the storm has always been just over the evening limb for us in UK, and as Mars shows us more easterly face each evening, so the dust storm progresses in the same direction remaining half-hidden to us.

 

 

• SPC looked normal.
• NPH appearing irregular with a dip near the CM.
• No morning mist visible
• The Eastern third of the disc appeared yellow-ish with settled dust, with the evening limb bright yellow, and especially bright at Argyre and Moab.
• Tharsis looking Rosy in colour by comparison with all these dust-affected regions.

• Niliacus Lacus, and Indus / Oxia Paulus seen protruding from the HPH.
• Solis Lacus appeared normal, quite dark and well defined. Coraeis Portus and Bathys Portus both held steadily. Phasis glimpsed a few times.
• Phrixi Regio possibly just a little paler than normal still.
• Agathodaemon held steadily, but looking soft-edged.
• Juventae Fons, Ganges, and Lunae Lacus all held steadily, and looking normal.
• Ophir was quite bright and pale, not with dust (checked in W58a), Candor was also bright.
• Aurorae Sinus looked dark, more so on its Western edge. Protei Regio held steadily as a pale streak separating Aurorae from Mare Erythraeum. Erythraeum dark at its western end, paler further East.
• Pyrrhae Regio appeared somewhat pale with settled dust.
• Margaritifer Sinus was well seen, but paler than Aurorae.
• Nereidum Fretum was notable on the Western edge of Argyre, as was a dark streak running from Campi Phlegraei to Coraeis Portus, which I can’t say I have really noticed previously.
• Sinus Meridiani seen protruding through dust at the limb.
• Deucalionis Regio and Thymiamata both quite bright with dust.

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#2 mdowns

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Posted 28 November 2020 - 09:58 AM

Another extraordinary rendition Chris!



#3 niteskystargazer

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Posted 28 November 2020 - 10:37 AM

Chris,

 

Good sketch of Mars Dust Storm (On 2020 11 27) smile.gif .

 

CS,KLU,

 

thanx.gif ,

 

Tom



#4 frank5817

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Posted 28 November 2020 - 10:50 AM

Chris,

 

Very fine report and excellent sketch.

 

Frank :)



#5 DDEV

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Posted 28 November 2020 - 07:47 PM

Hi Chris,

What a mighty fine sketch of Mars, mad all the more impressive by your detailed observational notes. Thoroughly enjoyed reading your descriptions of the 'Red' planet.

All the best,

Darren.


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