Commons:Valued image candidates/Mercury, Venus and the Moon Align.jpg

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Mercury, Venus and the Moon Align.jpg

undecided
Image
Nominated by Cody escadron delta (talk) on 2010-06-30 06:31 (UTC)
Scope Nominated as the most valued image on Commons within the scope:
Astronomic conjunction
Used in Global usage
Reason Best in scope. -- Cody escadron delta (talk)
Review
(criteria)
  •  Oppose as not yet eligible for VI status. Thank you for nominating this image. Unfortunately, it cannot at present become a valued image since it currently fails valued image criterion 5 (should be geocoded, but is not). "All images are expected to be geocoded unless it would not be appropriate to do so". When geocoded please also change the scope to something like Astronomical conjunction or Conjunction (Astronomy) as not to confuse this item with astrological or logical conjunction which can also have illustrations. Additionally, in the description it should be made clear which of the two are Venus an Mercury (some reusers could be confused here) maybe with an image note. — Lycaon (talk) 07:00, 30 June 2010 (UTC)[reply]
  • About geotag: rough location of the Very Large Telescope at the Paranal Observatory on Cerro Paranal added. The source page says: "To the bottom left, [...] is one of the four 1.8-metre Auxiliary Telescopes (ATs) deployed at Paranal". The ATs are mobile telescopes which can be placed on different positions around the four big telescopes, but in a limited area. We can see a peak in the background and I guess that the position of the Moon and planets can help to precise the camera location. --Myrabella (talk) 22:24, 1 July 2010 (UTC)[reply]

* Oppose Sorry, I don't find the picture so good. As far as I know, Venus appears perceptibly red. This should be visible in a valuable photo. --Ikar.us (talk) 09:37, 30 June 2010 (UTC)[reply]

  • Albeit once bitten, I try again to pretend astronomical knowledge:
    1. The date in the image description is was wrong. It claimed to be from last week. The source says "one morning in March 2008". ✓ Done according to en:Conjunction (astronomy and astrology)#2008
    2. The conjunction is of only two planets and not very close. There are more impressive examples here, although without ground reference. --Ikar.us (talk) 10:47, 30 June 2010 (UTC)[reply]
  •  Oppose This doesn't really look like a conjunction. Venus and Mercury are fairly far away. --The High Fin Sperm Whale 03:51, 1 July 2010 (UTC)[reply]
  • Astronomers talk about conjunction whenever one solar system object "overtakes" another on their ways along the ecliptic. Because of their inclination, they usually are several degrees apart from each other. An outstanding conjunction happens when either two objects have a conjunction near the intersection of their paths, appearing specially near to each other, or when more than two objects have a joint conjunction. In this sense the conjunction of Moon, Mercury and Venus on this image is somewhat special. --Ikar.us (talk) 09:27, 1 July 2010 (UTC)[reply]
    • But - where is the ecliptic in the image? Is it vertical? Then the moon is just approaching, and there's no conjunction yet. --Ikar.us (talk) 13:15, 1 July 2010 (UTC)[reply]
      •  Info To know if the image represents a conjunction or not, I've asked Luc Viatour; his answer on my talkpage (in French). --Myrabella (talk) 14:37, 1 July 2010 (UTC)[reply]
      • As I understand, he says it's a conjunction of the twoplanets and a nice monn crescant. And he emphasises that conjunctions aren't rare, and that photographers must place them in a context. And that it's very well realised here. --Ikar.us (talk) 15:15, 1 July 2010 (UTC)[reply]
  • Terrestrial context is good for a postcard photo. (That's what this photo was intended, since it's published by ESO, but without astronomical data.) Important is always some scale, but the moon is a perfect scale on sky. His diameter is half a degree. I'm going to nominate one of the photos of the triple threesome conjunction on 2008-12-01. --Ikar.us (talk) 15:21, 1 July 2010 (UTC)[reply]
    en:Triple conjunction means three subsequent conjunctions of the same two objects due to retrograd movement. Changed word. --Ikar.us (talk) 13:15, 5 July 2010 (UTC)[reply]
  •  Support All criteria met. For me the best of the bunch. Lycaon (talk) 13:22, 2 July 2010 (UTC)[reply]
  •  Support For me too. --Myrabella (talk) 14:30, 2 July 2010 (UTC)[reply]
  • I think now I've really understood what we see. We're near the equator, looking East, the ecliptic is vertical. It's the day of Mercury's maximum elongation. Probably worth a VI. (Most of the time, Mercury is too near to the sun to be seen.) But it's not a conjunction. In this view from Equator, planets in conjunction would be side-by-side, left-right. These two had even two conjunctions, one on 2008-02-27, when Mercury passed Venus on his way away from the sun, and one on 2008-03-24, when he had turned and travelled back. Both times only 1° distance to the right rsp. left. Here we are in the mid of this period. No conjunction.  Oppose, out of scope. --Ikar.us (talk) 17:57, 2 July 2010 (UTC)[reply]
Scores: 
1. Mercury, Venus and the Moon Align.jpg: 0 <--
2. 08.12.01 01 Conjuction of the Moon, Venus & Jupiter.JPG: 0
3. Moon and Venus conjunctions.jpg: 0
3. Moon-venus-jupiter-2.jpg: 0
=>
File:Mercury, Venus and the Moon Align.jpg: Undecided. <--
File:08.12.01 01 Conjuction of the Moon, Venus & Jupiter.JPG: Undecided.
File:Moon and Venus conjunctions.jpg: Undecided.
File:Moon-venus-jupiter-2.jpg: Undecided.
--Ikar.us (talk) 12:38, 11 July 2010 (UTC)[reply]