Editing 2906: Earth
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The ''absence'' of a clearly visible Moon, which would have a near-identical phase to the illuminated Earth and could easily be the second brightest object in the scene, is therefore best explained by it being no more than a sub-pixel object, indistinguishable from the surrounding darkness of space, somewhere within thirty Earth diameters (and thus [[2205: Types of Approximation|approximately]], in this image, pixels) of the visible Earth. This could include being sufficiently in conjunction/opposition to Earth to blend in, or be obscured by it.<!-- Note just for those who pass by this source: This excludes the 'out there' humorous possibility that the badly-done manouver did not effect the spacecraft, so much as it somehow sent the *Earth* out of its position, leaving the ship (and the Moon, and more than half of all other satellites?) still technically continuing more or less their prior Earth-orbits - which are now technically various solar ones... (BunsenH:)This could be a remake of {{w|Space: 1999}}. (OP:)Indeed, but actually turned up several notches! --> | The ''absence'' of a clearly visible Moon, which would have a near-identical phase to the illuminated Earth and could easily be the second brightest object in the scene, is therefore best explained by it being no more than a sub-pixel object, indistinguishable from the surrounding darkness of space, somewhere within thirty Earth diameters (and thus [[2205: Types of Approximation|approximately]], in this image, pixels) of the visible Earth. This could include being sufficiently in conjunction/opposition to Earth to blend in, or be obscured by it.<!-- Note just for those who pass by this source: This excludes the 'out there' humorous possibility that the badly-done manouver did not effect the spacecraft, so much as it somehow sent the *Earth* out of its position, leaving the ship (and the Moon, and more than half of all other satellites?) still technically continuing more or less their prior Earth-orbits - which are now technically various solar ones... (BunsenH:)This could be a remake of {{w|Space: 1999}}. (OP:)Indeed, but actually turned up several notches! --> | ||
− | The general lack of other visible stars, etc, would be explained by the exposure being tuned to not wash out the illuminated internal view, and not being set up for useful astronomical shots, though may then set another range of useful limits on what magnitude of reflected sunlight must still arrive from Earth in order to remain visible.<!-- Additional bonus note: This would depend upon the effective Earth-phase, Earth-albedo (e.g. ocean/land/ice-cap as prime reflector), the actual levels of the running lights by the ' | + | The general lack of other visible stars, etc, would be explained by the exposure being tuned to not wash out the illuminated internal view, and not being set up for useful astronomical shots, though may then set another range of useful limits on what magnitude of reflected sunlight must still arrive from Earth in order to remain visible.<!-- Additional bonus note: This would depend upon the effective Earth-phase, Earth-albedo (e.g. ocean/land/ice-cap as prime reflector), the actual levels of the running lights by the 'cupula' viewing window and possible lower-dynamic-range capabilities/adjustments to the resulting image by the hypothetical 'comic camera', perhaps other details. On top of it being more governed by Rule Of Funny than *strict* reality, I suggest that making the actual calculation would be more troublesome than it's worth. Right? --> |
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=== The "pale blue" dot === | === The "pale blue" dot === | ||
Although it might initially look like a white dot, the comic truly has used a pale blue color for the dot that represents Earth, with the color used in the "2x" version of the image seeming to be 0xBDCFF4. | Although it might initially look like a white dot, the comic truly has used a pale blue color for the dot that represents Earth, with the color used in the "2x" version of the image seeming to be 0xBDCFF4. | ||
− | This can be interpreted as predominently a very light gray, with an extra hint of green and a bigger hint of blue. Or redefined as an {{w|HSL and HSV|HSV}} triplet of of 220.4 (a greenish-blue hue), 22.5% (relatively unsaturated) and 95.7% (very bright), all consistent with how the sunlit side of an Earthlike world would look with large oceans, vast swathes of terrestrial vegetation and atmospheric clouds | + | This can be interpreted as predominently a very light gray, with an extra hint of green and a bigger hint of blue. Or redefined as an {{w|HSL and HSV|HSV}} triplet of of 220.4 (a greenish-blue hue), 22.5% (relatively unsaturated) and 95.7% (very bright), all consistent with how the sunlit side of an Earthlike world would look with large oceans, vast swathes of terrestrial vegetation and atmospheric clouds) if necessarily abstracted down to a very limited number of pixels. |
− | Looking at {{w|File:Pale_Blue_Dot.png|an actual example of the 'original'}}, seems to give a possible RGB of 0x95B39E (which gives: hue of 138, i.e. a 'bluish-green'; saturation level of 16.8%; brightness value of 70.2%), which is of course also consistent with the above assumptions about Earth. But all such images are of course | + | Looking at {{w|File:Pale_Blue_Dot.png|an actual example of the 'original'}}, seems to give a possible RGB of 0x95B39E (which gives: hue of 138, i.e. a 'bluish-green'; saturation level of 16.8%; brightness value of 70.2%), which is of course also consistent with the above assumptions about Earth. But all such images are of course ultiamtely derived as a composite of the data from [https://pds-rings.seti.org/voyager/iss/inst_cat_na1.html#filters eight separate 'filters'], which don't neatly fit into the {{w|RGB color model}}, and always subject to various kinds of post-processing and image conversion techniques.<!-- Maybe someone can find an actual 'original original' from NASA/JPL/whoever, or even the original eight 'raws'..? --> |
==Transcript== | ==Transcript== |