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Rupes Recta

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#1 jrkirkham

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Posted 30 July 2020 - 09:56 PM

I've noticed that several people list Rupes Recta as their favorite lunar feature. Does anyone on here list the Straight Wall among their favorite lunar features? If so, why? What makes it special to you? This is my first time paying specific attention to this feature. I took this shot of the eight-day moon on Tuesday evening.

 

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  • Rupes Recta jul20  thumbnail A.jpg

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#2 n2dpsky

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Posted 30 July 2020 - 10:02 PM

I was looking at the straight wall just the other night as it was just past the terminator.   When I first got a telescope, it was one of the very first lunar features I identified so it will remain special for that reason.  When the light is right, it's just striking.


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#3 Dave Mitsky

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Posted 30 July 2020 - 11:42 PM

Rupes Recta is certainly high on my list of favorite lunar features.  Here's a hand-held afocal iPhone photo that I took on May 30th using my 6" Celestron NexStar Evolution.

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  • Moon Celestron SCT May 30 Naylor IMG_5254 Processed Rotated Flipped Recropped Rupes Recta CN (2).jpg

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#4 waso29

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Posted 31 July 2020 - 01:01 AM

before spotting Neowise in dawn sky on July 13th,

checked out last quarter moon for different view of rupes recta.

 

iPhone shot thru 4in fract

 

 

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  • IMG_6876 07-13-20 rupes recta fc100dl f14 em200t2m @conway.JPG

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#5 Voyager 3

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Posted 31 July 2020 - 07:50 AM

I've noticed that several people list Rupes Recta as their favorite lunar feature. Does anyone on here list the Straight Wall among their favorite lunar features? If so, why? What makes it special to you? This is my first time paying specific attention to this feature. I took this shot of the eight-day moon on Tuesday evening.

What scope and mag you used ?
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#6 jrkirkham

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Posted 31 July 2020 - 10:22 AM

This was a single frame snapshot taken with my C11 and a 2.5X Powermate.


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#7 flt158

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Posted 03 August 2020 - 03:31 PM

I have to admit Rupes Recta is my favourite lunar feature. 

And it has been for many years. 

It looks identical to a complete sword. 

But over here in Ireland, it was hugging the lunar terminator on 3rd January 2020. 

It was even contributing to as to where the terminator was ending. 

It's a sight I won't be forgetting for a long long time. 

I have never seen it white. 

It has always been black on the waxing Moon. 

Sadly I have never taken the time to observe Rupes Recta during a waning Moon. 

Maybe some morning I will. 

I thank you all for your images and reports. 

 

Best regards from Aubrey. 


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#8 jrkirkham

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Posted 03 August 2020 - 09:24 PM

That's interesting. This is a new target for me. I didn't think of the sword until you mentioned it and I went back to look. 


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#9 Voyager 3

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Posted 04 August 2020 - 11:27 AM

It looks like m1014
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#10 Dave Mitsky

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Posted 04 August 2020 - 11:54 AM

That's interesting. This is a new target for me. I didn't think of the sword until you mentioned it and I went back to look. 

In fact, one of the other names associated with the Straight Wall is Huygens's Sword.

The 17th-century astronomer Christiaan Huygens, credited with discovering Rupes Recta, likened the jumble and half-crater to the handle of a sword, with Rupes Recta forming the blade. Although a better allusion is that of a fencer's foil, we know the combined appearance today as Huygens's Sword.

https://www.cloudyni...rima-birt-r3241


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#11 Helvetios

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Posted 04 August 2020 - 11:56 AM

This is certainly a nice feature to look at and photograph.  A linear feature like this really catches your eye among all the craters and mountains.  I took this with my Criterion Dynascope RV-6 a few months ago.

 

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  • EF0A52C0-7157-482D-AADA-89F787DA02CB.jpeg

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#12 Orion92

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Posted 09 August 2020 - 08:11 AM

I observed the straight wall a couple of months ago while working on the Astronomical League Lunar 1 program. The night I observed it the sun was beginning to rise over this feature which created incredible shadow details. At first I thought that a nearby mountain was casting this shadow but looking at the shadows in the surrounding area made me realize that this was a wall. The next night I re-visited the feature, and while still impressive, the shadows had yielded to the Sun and the view was less dramatic as the night before. Below is a photo of Rupes Recta through my eyepiece with my phone.

 

Clear, steady skies,

 

Kyle

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  • Rupes Recta.jpg

Edited by Orion92, 09 August 2020 - 08:11 AM.

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#13 Dave Mitsky

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Posted 29 August 2020 - 12:20 AM

Here's a hand-held afocal iPhone photo of Rupes Recta and a lunar crater light ray in Maginus that I took on Wednesday night using the 17" f/15 classical Cassegrain at the Naylor Observatory.   Lunar north is up.

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  • Moon August 26 IMG_6896 Cropped Labeled CN.jpg

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#14 Dave Mitsky

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Posted 29 August 2020 - 12:24 AM

Here's a close-up of Rupes Recta.

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  • Moon Naylor August 26 Rupes Recta IMG_6990 Processed CN.jpg

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#15 doolsduck

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Posted 29 August 2020 - 02:02 AM

I have never seen it white.
It has always been black on the waxing Moon.
Sadly I have never taken the time to observe Rupes Recta during a waning Moon.
Maybe some morning I will.
I thank you all for your images and reports.

Best regards from Aubrey.

Neither have I Aubrey but it would be nice to get the image to record the stereotypical evil sword/good sword!😉
My favourite is the Apennines. I don’t like the attention Rupes Recta gets in my images even if they are about some other feature. It’s like oooh, aaaah, look at Rupes Recta 🤣

Edited by doolsduck, 29 August 2020 - 02:03 AM.

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#16 Dave Mitsky

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Posted 10 October 2020 - 02:35 PM

Here's a shot of the Walther Sunset Ray that I took on Friday morning that also includes a fully illuminated Rupes Recta.  Lunar north is up in the photograph.

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  • Walther Sunset Lunar Ray 17-Inch October 9 AM IMG_8211 Processed Rotated CN.jpg

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#17 aeroman4907

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Posted 10 October 2020 - 03:57 PM

Here is a recent fairly resolute image of the area.  I have yet to capture it with the broadsword appearance.

 

Rupes.jpg


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