Commons:Featured picture candidates/File:2017-04 Circumpolar trails sunset at La Hague lighthouse.jpg

File:2017-04 Circumpolar trails sunset at La Hague lighthouse.jpg, featured

Voting period is over. Please don't add any new votes.Voting period ends on 5 Dec 2017 at 09:30:15 (UTC)
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Category: Commons:Featured pictures/Astronomy
Info created by 0x010C - uploaded by 0x010C - nominated by 0x010C -- — 0x010C ^~talk~ 09:30, 26 November 2017 (UTC)[reply]
Support -- — 0x010C ^~talk~ 09:30, 26 November 2017 (UTC)[reply]
Support Looks good. At pixel level the landscape is a bit blurry which I guess is the camera not being absolutely steady for 2 hours. I don't know if it is possible to blend the landscape differently to the stars in order to sharpen that up a bit. The colour of the sky is good. -- Colin (talk) 10:50, 26 November 2017 (UTC)[reply]
Support --cart-Talk 13:03, 26 November 2017 (UTC)[reply]
Support --Kiril Simeonovski (talk) 13:27, 26 November 2017 (UTC)[reply]
Support--g. balaxaZe★ 13:52, 26 November 2017 (UTC)[reply]
Question - In this case, I'm wondering why there are a couple of untraily stars (I see 2 toward the right side). Could anyone address this? -- Ikan Kekek (talk) 16:12, 26 November 2017 (UTC)[reply]

Could be geostationary satellites, they seldom create trails since they stay in the same place over the planet's surface. --cart-Talk 19:12, 26 November 2017 (UTC)[reply]

Ikan, I suspect they may be hot pixels on the sensor. The automatic technique for removing them is when the camera takes a same-length long exposure with the shutter closed immediately afterwards and subtracts any light "recorded". This "long exposure NR" has to be turned off for star trails, otherwise there would be even longer gaps between the trail segments. It is possible to do this by-hand in Photoshop, by taking an extra shot with the lens cap on, but it may be easier here to simply clone out the odd bright pixel. -- Colin (talk) 19:35, 26 November 2017 (UTC)[reply]

Thanks for the possible explanations. 0x010C, do you have an opinion about this? In any case, they're so small and the photo is so impressive, with the rhythm of the trails helping to produce a really dynamic composition. So I'm happy to Support. -- Ikan Kekek (talk) 00:04, 27 November 2017 (UTC)[reply]

Done @Ikan Kekek: I've removed thoose spots. It can have two different origins imho: hot pixels like Colin said or the temporary reflection of an adjacent star due to atmospheric disturbances. Also, thanks for your support! — 0x010C ^~talk~ 18:12, 27 November 2017 (UTC)[reply]

You're welcome! -- Ikan Kekek (talk) 20:26, 27 November 2017 (UTC)[reply]

Support Overall a great piece of work. The only drawback is that the star trails aren't completely continuous.--Peulle (talk) 17:02, 26 November 2017 (UTC)[reply]
Support --Martin Falbisoner (talk) 18:22, 26 November 2017 (UTC)[reply]
Support --XRay ^talk 18:39, 26 November 2017 (UTC)[reply]
Support nicely done — Rhododendrites ^talk | 19:33, 26 November 2017 (UTC)[reply]
Support --Ermell (talk) 20:18, 26 November 2017 (UTC)[reply]
Support --Yann (talk) 23:08, 26 November 2017 (UTC)[reply]
Support -- Prismo345 (talk) 23:18, 26 November 2017 (UTC)[reply]
Support --Agnes Monkelbaan (talk) 10:08, 27 November 2017 (UTC)[reply]
Support Excellent --The Photographer 15:28, 27 November 2017 (UTC)[reply]
Support Nice. Jules78120 (talk) 12:54, 28 November 2017 (UTC)[reply]
Support --Harlock81 (talk) 21:13, 28 November 2017 (UTC)[reply]
Support Daniel Case (talk) 06:42, 29 November 2017 (UTC)[reply]
Support -- Basile Morin (talk) 13:26, 30 November 2017 (UTC)[reply]

Confirmed results:

Result: 19 support, 0 oppose, 0 neutral → featured. /PumpkinSky talk 19:46, 1 December 2017 (UTC)[reply]

This image will be added to the FP gallery: Astronomy