[HN Gopher] Two astrophotographers teamed up to capture a stella...
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Two astrophotographers teamed up to capture a stellar image of the
moon
Author : pseudolus
Score : 103 points
Date : 2022-08-22 12:43 UTC (2 days ago)
(HTM) web link (www.npr.org)
(TXT) w3m dump (www.npr.org)
| Synaesthesia wrote:
| I found another really good moon photo here:
|
| https://www.reddit.com/r/space/comments/wu9dm3/100_megapixel...
| pmayrgundter wrote:
| Got me interested to find the Apollo landing site.
|
| Someone circled it here https://i.imgur.com/DDy794h.png and then
| I zoomed around to find it in Google Moon:
|
| https://www.google.com/maps/space/moon/@0.6714676,23.4736245...
|
| Amazing
| 0xcafecafe wrote:
| The article certainly lacks interesting details. Why did it take
| 9 months to edit the image? What nuances were involved?
|
| Also would it have been better to capture the full moon?
| MisterTea wrote:
| Right in the beginning: "Two astrophotographers have teamed up
| to produce an out-of-this-world photo of the moon, capturing
| over 200,000 shots to create a single image."
|
| I'm no astrophotgrapher but I'd imagine 200,000 shots takes a
| long time to go through.
| CharlesW wrote:
| There's more detail to be found in the Reddit thread linked to
| in TFA.
|
| Here's an example link from that post with a few more details
| on the setup and process:
| https://cosmicbackground.io/blogs/learn-about-how-these-are-...
|
| Here's a guide for astrophotography beginners:
| https://www.reddit.com/r/AskAstrophotography/comments/e609qd...
|
| This article compiles a list of some popular software used for
| astrophotography:
| https://www.highpointscientific.com/astronomy-hub/post/astro...
| lupire wrote:
| > stellar image of the moon
|
| When do we get a lunar image of the sun?
| rimliu wrote:
| Do images taken during solar eclipses count?
| dwighttk wrote:
| To be fair it is almost entirely stellar light
| sexangel wrote:
| Andrew McCarthy is great, glad he's been working on bigger &
| bigger projects lately
| stavros wrote:
| > "Andrew aimed purely for the detail side whereas I aimed purely
| for the color side," Matherne said. "That allowed us to get the
| full moon."
|
| Looks like it was merely waxing.
| SamBam wrote:
| A wax gibbon, even.
| huhtenberg wrote:
| Waxing Gibbous
|
| https://spaceplace.nasa.gov/moon-phases/en/
| dukeofdoom wrote:
| So are these colors accurate? What mineral causes the redish
| brown color.
| amflare wrote:
| According to one of the photographers[0], yes.
|
| > The color in this image is real, but presented with increased
| saturation so it is easily visible to our eyes. The reddish
| tones demonstrate areas rich in iron and feldspar, while the
| bluish areas are spots where the regolith is rich in titanium.
| Oxidization from influence from Earth's atmosphere makes the
| colors appear like they do.
|
| [0]:
| https://www.reddit.com/r/space/comments/wtl9fj/comment/il4q5...
| JohnJamesRambo wrote:
| Is the color real if it has wildly increased saturation?
|
| https://www.reddit.com/r/shittyHDR/comments/wo453p/picture_o.
| ..
|
| As an aside, does anyone have a link to what equipment they
| used for the detail photos?
| CharlesW wrote:
| > _Is the color real if it has wildly increased
| saturation?_
|
| It might be more accurate to say that the color is not
| typically that noticeable by the human eye. It's "real" in
| the sense that it exists even though we can't perceive it
| without help, like infrared light, or the sound made by
| black holes.
| bb88 wrote:
| This is particularly true if you're looking at pictures
| of nebulas. The hydrogen alpha light is in the infrared
| and for humans is color mapped to red.
|
| Cameras are sold with the capability of capturing the
| hydrogen alpha light. Like the Nikon 810A which is a
| Nikon 810 but with the IR filter removed.
| platz wrote:
| Agree the saturation is pushed to the point of absurdity in
| the moon image. Doesn't look like a 'Real' Photo anymore
| and thus looses it's impact/gravity.
| dukeofdoom wrote:
| So a little like Hawaiian volcanic red dirt soils. At least
| one of the moon landing sites would have been in the red
| dirt. Would be interesting if the moon landing footage from
| there also matches up with a color grade of a redish tone.
| All the photos I've seen the ground is supper grey.
| yborg wrote:
| Anywhere on the near side would be exposed to the Earth's
| extended atmosphere, so this oxidation would be everywhere.
| Out of all the Apollo landing sites, ironically Apollo 11
| would be the only one in an area not heavily reddish in
| this photo. So, no, this coloration would not be
| perceptible to the human eye.
| pengaru wrote:
| They're obviously not accurate, that's post-processing
| highlighting what are subtle variations.
|
| It's presumably being done to make the images more interesting
| to look at.
| kloch wrote:
| The colors are real but exaggerated during image processing by
| pushing color saturation much higher than normal.
|
| I took a pic of the moon in 2018 and noticed the colors when
| playing around in Lightroom. At first I thought it was
| artifacts from my camera but after some research realized it
| was due to real Iron and Titanium oxides:
|
| https://kevinloch.com/pics/color-supermoon-2018-01-31-0658z....
|
| That's just a single hand-held shot with a Canon 5D Mark IV and
| 400mm lens, so it doesn't take much.
|
| I don't know when this "mineral moon" style became popular but
| it's all the rage right now.
| [deleted]
| [deleted]
| hengheng wrote:
| Parts of that mosaic are awfully soft, did they not pre-select
| images based on sharpness?
| macintux wrote:
| You can always ask them. My guess is that after 9 months and
| 200k images they went with what they had.
|
| https://old.reddit.com/r/space/comments/wtl9fj/two_years_ago...
| mixmastamyk wrote:
| There seems to be a blur or glow applied to the bright edge, as
| if there is an atmosphere. It's not in the input photos. Looks
| distracting to me.
| jacquesm wrote:
| https://www.nasa.gov/mission_pages/LADEE/news/lunar-
| atmosphe...
| jetrink wrote:
| They did themselves a bit of a disservice uploading the full-
| resolution version. Enlarged to 3m x 3m and viewed from 20cm
| away, which is approximately the situation when you view this
| one at 100% on a computer screen, you can see every
| imperfection. I think it looks great when viewed at normal
| size.
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(page generated 2022-08-24 23:02 UTC)