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Mars - 3rd January 2010 - PM

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#1 dweller25

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Posted 04 January 2010 - 02:34 PM

Mars drawn at 23:30UT at an altitude of 40 degrees.

Seeing III with moments of IV.

CM = 259'

Takahashi FS128 refractor plus binovewer at x238.

Notes :
Syrtis Major easily seen to the North of the drawing along with Mare Tyrrhenum and Mare Serpentis. Hellas looked quite dim.
A very obvious bright edge to the limb of Mars to the East of the drawing.
The Hyblaeus extension could occasionally be see when the seeing improved.
Utopia and Casius easily seen to the South of the drawing bordering the Polar ice cap.

This is the best view of Mars I have ever had.

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#2 Jef De Wit

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Posted 04 January 2010 - 02:49 PM

Another nice Mars-sketch! If the Mars-sketches will continue to be post at this rate at CN... I will know all the main feature of Mars by the end of january :jump:

I can't find all the names you mentioned on the ALPO-map of Mars. Which map do you use?

#3 Tommy5

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Posted 04 January 2010 - 06:02 PM

Very good sketch of mars thanks for posting.

#4 Kris.

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Posted 05 January 2010 - 05:18 AM

excellent sketch, you're already capturing more detail with every sketch you make :)

Aetheria is a good catch, did you note a bright patch just to the left of it?

Are you sure about Nilosyrtis? if so that's great!

#5 dweller25

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Posted 05 January 2010 - 06:06 AM

Hello Kris - thanks. The more I observe the more I see, patience plays a big part.

What map do you use to name the features ? - what is the standard ?

I now have downloaded three maps that do not agree with each other !!!!

Help :-)

#6 sixela

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Posted 05 January 2010 - 07:34 AM

I think what you're calling Nilosyrtis is actually Casius. I caught something which is probably Nilosyrtis on the same night; I just posted the sketch in Kris's "1 jan" thread, but I'll post the coloured sketch here for comparison.

I think Nilosyrtis is the faint whisp between Casius and Syrtis Major.
Sketched at roughly 1u00-1u30 UT (though the position I put Aetheria probably has to have been earlier than that, so it's probably too much to the right, and yours is much more accurately positioned - I also distinctly saw it as a black spot close to the north pole and a very faint extension; by the time I drew the rest it probably faded from visibility close to the limb).

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#7 dweller25

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Posted 05 January 2010 - 08:55 AM

Kris, Sixela,

Yes I have wrongly labelled Casius as Nilosyrtis.

I need a good map the one I have is misleading.

#8 Jef De Wit

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Posted 05 January 2010 - 02:20 PM

Dweller

Casius is on the map. Nilosyrtis wasn't. I downloaded also the maps that Carlos put in a post some time ago. But they are all small and confusing....

@ Alexis: thanks for the correction.

#9 CarlosEH

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Posted 05 January 2010 - 02:28 PM

Dweller,

Another excellent observation of Mars. You have recorded much detail across the martian disk. I have labeled the major albedo features visible. I hope that this proves helpful.

It is very confusing in regards to the nomenclature of Mars. There exists many maps with variations of different regions. I rely upon the map produced by Shiro Ebisawa (Japan) who based his map upon Eugene. M. Antoniadi. The official Martian nomenclature is decided upon by the planetary nomenclature committee of the International Astronomical Union (IAU).

Links;
http://alpo-j.asahik...test/map123.JPG (Ebisawa Mars map)
http://marsprogram.j...ch/marsnom.html (ALPO Mars map)

Sixela- An excellent observation of Mars. You have also recorded much detail. Thank you for sharing it with us all.

I look forward to your future observations.

Carlos

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#10 dweller25

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Posted 05 January 2010 - 03:02 PM

Hello Carlos,

Thanks for the feedback and the labelling.

The links for the maps are excellent, I prefer the ALPO version as it is more in line with my scope/eyes ability.

#11 CarlosEH

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Posted 05 January 2010 - 07:22 PM

Dweller,

I also like the ALPO map for it's easier readibility and closer appearance to the eye. I am happy to label your excellent observation.

Carlos

#12 Kris.

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Posted 06 January 2010 - 05:47 AM

oops, i've been wrong all the time concerning Aetheria & Hyblaeus Extension. this map makes you think the Hyblaeus Extension is Aetheria!

#13 dweller25

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Posted 06 January 2010 - 06:13 AM

Kris

oops 2 - I used that same map too and made the same conclusion !!

This is the map I used that called Casius Nilosyrtis ...

http://www.astro.vir...BW-mars-map.jpg

I will use the ALPO map Carlos pointed me to from now on.






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