65 replies to this topic

[PhilH]

The Moon's terminator is a fascinating sight through all telescopes. Here, along the lunar sunset/sunrise line, lighting can strike familiar lunar features in very unusual ways, transforming them in ways that go unsuspected when the Sun rides high overhead.

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[Dave Mitsky]

Thanks for using my photo, Phil!

[PhilH]

Thanks for using my photo, Phil!

My pleasure, Dave.  Thanks for discovering X2! 

[Sarkikos]

Ever seen the Quincunx?  

 

Quincunx Spotted on the the Terminator!

https://www.cloudyni...the-terminator/

 

Mike

[PhilH]

Thanks, Mike.  I've seen the thread, but never your Quincunx.  Named for five dots arranged in a cross, with four of them forming a square or rectangle and a fifth at its center.  My new word of the day.  Now, to work that into a conversation!

[Sarkikos]

Quincunx would probably only come into conversation if you play dice!  The five on a die is a quincunx.

 

Mike

[optinuke]

Phil,

 

Since reading this article, I'd been anticipating observing these lunar features.  Last night (early 1/14/18 UT) it was clear in the Las Vegas area and I saw the U, V, and X in 60 and 80mm refractors, as well as shooting them with a video camera through a C14.  It was a lot of fun to see them and not worry about dark adaptation and incidental lights from surrounding houses.  The dynamic nature of the view was also interesting to watch as the sun slowly illuminated the features.

 

The Moon was getting too low to see X2 but I look forward to seeing that, too, in the future.

 

Jay

[PhilH]

Jay,
 
That's great!  Glad you had a chance to catch the view.  Unfortunately, the Moon had set here on the east coast by the time they all came into view, so I missed them.  In fact, looking at the rest of the year, I don't I'll get a chance to see them, except possibly in daylight, until Dec 14.  It's on my calendar, but my long-range forecast is for clouds. 

[Dave Mitsky]

Here's a cropped version of an image that I took that shows the Quincunx.

 

Dave Mitsky

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[Dave Mitsky]

I captured the Quincunx again on Tuesday night, May 18th, using my iPhone 6s and the ASH 17" f/15 classical Cassegrain.

Dave Mitsky

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[NorthernlatAK]

I believe I captured a photo of this feature but I am new to forums and technology in general. All I have is a cell phone and I am trying to post a picture. Can anyone help?

[NorthernlatAK]

Album: Cellphone astro

1 images

0 comments

 

[Dave Mitsky]

I took the following afocal photos of the Lunar V, Aries' Hoofprint, and the Lunar X on the night of October 23rd using the Naylor Observatory's 17" f/15 classical Cassegrain.
 

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[Dave Mitsky]

Here's a close-up of the Lunar V and Aries' Hoofprint to the right.

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[Dave Mitsky]

And here's a close-up of the Lunar X.

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[Dave Mitsky]

Here's a hand-held afocal iPhone photo that I took on 3/20/21 using a 6" f/8 Orion SkyQuest XT6 Dob. Various lunar clair-obscur effects such as the Lunar L, X, V, a second V, and Aries' Hoofprint are labeled.

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[Dave Mitsky]

Here's another afocal shot, with the Lunar X, V, V2, and L indicated, that I took with the 6" Orion Dob and my iPhone.

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[Dave Mitsky]

There is a third Lunar X or Lunar X3.  Here's a cropped and reprocessed version of a photograph that I took on 5/29/2020.  

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[Dave Mitsky]

I took this hand-held afocal iPhone photo on 4/19/21 using the 6" f8 Orion SkyQuest XT6 Dob.  The Lunar X was past its prime but the Lunar V and Lunar X3 (to the lower left of the Lunar V) are easily visible in the upper half of the picture.

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[Dave Mitsky]

Earlier today I noticed that the Lunar V and Lunar X are visible in the photograph of the 8-day-old Moon that I took last night (May 19th), despite being a good distance from the terminator and well past their prime.  Aries' Hoofprint is also visible to the immediate upper right of the Lunar V and the Lunar X3 to lower left of the Lunar V.

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[Dave Mitsky]

Here's an afocal iPhone shot that I took on May 18th using a 6" f/8 Orion SkyQuest XT 6 Dob with the Lunar X, Lunar V, Lunar V2 (or truncated Y), and Lunar L labeled.

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[Dave Mitsky]

I took this afocal iPhone photo on the morning of May 19th using the Naylor Observatory's 17" f/15 classical Cassegrain. The Lunar X2 was beginning to form at that point in time.

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[Dave Mitsky]

I took this hand-held afocal photograph last night using my iPhone 11 Pro, a 6" f/8 Orion SkyQuest XT6 Dob, and a 17.3mm Tele Vue Delos eyepiece.  Even though it was at its prime in the morning the Lunar V was still easily visible, along with Aries' Hoofprint and Lunar X3.

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[Dave Mitsky]

Here's a shot of the Lunar X that I took on 6/17/21 using the same gear.

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[Dave Mitsky]

The following are a few of the shots of the Lunar X and Lunar V that I took on 9/13/21 using my iPhone 11 Pro, a 6" f/8 Orion SkyQuest XT6 Dob, and an 8-24mm Tele Vue Click Stop eyepiece.  Wildfire smoke was a bit of a problem.

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