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cloudsweeper

More Terminator Treats

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5.05 - 5.50pm, Sunday - Moon nearly full, lowish in east, between houses, so I grabbed the chance to view more treats on the terminator, using the ED80 Apo.  (It's been all Moon lately, as it goes cloudy after dark.)  Mags - x40, 80, 120.

Craters west of Mare Humorum close to the terminator led to Byrgius with its floor in shadow and a notch out of its western rim, right on the terminator.  Immediately north was a region of overlapping craters, resembling a foot (same size as Byrgius) with two big toes.  East of that, a group of three tiny craterlets, then the little de Vico.  Continuing NW, the larger Cruger, and further still, a feature of the Cordillera Mountains appearing as a near-complete white oval suspended in darkness.  Very interesting and pleasing.

I finished with a look at Gassendi, last viewed two days ago, and now very washed out, except for a bent line of six little white dots, presumably a combination of peaks and craterlets.

Amazing how much there is to examine in just a small region of our beautiful Moon.  And it's different every night!

Doug.

 

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Had a quick look myself around 6pm as one of my favourite areas, Aristarchus and Schroter's Valley were well placed. Disappointing however as the seeing was poor.   ☹️  

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Waiting for the moon to rise above the trees here. Nice report Doug :smiley:

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Just watching a shaft of light throw an arc through hevelius.. lovely view as it's developing 

And a even fainter "fan" of light developing in grimaldi too.. 

Edited by Fozzie

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Nice one Doug, the Moon has certainly been looking lovely recently with these clear ish skies!

Did you spot this feature? Not sure if it was the one you described? I was using a little 52mm spotting scope to show my daughter the moon and had some nice low power views, but enough to spot this little glimmer hanging out in the darkness.

20190217_201620.jpg

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Stu - @Stu - I think I must have been looking further south where there was much detail on the terminator, and it was a very clear white oval/sausage - shape hanging in isolation in the blackness, quite lovely.

Peter - @Peter Drew  - the seeing wasn't bad (as far as I could tell, only going up to x120), but the transparency was bad yet again when I looked out later and could only make out the outline of Orion.

Mustn't grumble though - I've had 23 sessions so far this year!

Doug.

 

Edited by cloudsweeper
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Nice seeing at the moment here - 240x with the 130mm refractor is very sharp. I'm loving the views of Aristachus crater currently. I can see dark streaks in a couple of places leading down the craters steep walls. According to NASA these are impact melt deposits, as described in this simply magnificent LRO image of the craters west wall :smiley:

https://apod.nasa.gov/apod/ap120217.html

Stuff like this really adds to the fascination of what I can see through my scope I feel :icon_biggrin:

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I noticed those streaks as well John. I've been looking at the Aristarchus Plateau area and have been facinated by it's colour, a slight purplish brown that stands out as a square from the surrounding grey. I was using my 12" Dob with a 17.5 Morpheus and a 14 Delos. Has anybody else noticed this or am I just imagining it.

Avtar

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