Editing 2645: The Best Camera
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==Explanation== | ==Explanation== | ||
+ | {{incomplete|Created by an AMATEUR PHOTOGRAPHER - Please change this comment when editing this page. Do NOT delete this tag too soon.}} | ||
− | [https://www.goodreads.com/book/show/6921300-the-best-camera-is-the-one-that-s-with-you | + | ''The Best Camera Is The One That's With You'' [https://www.goodreads.com/book/show/6921300-the-best-camera-is-the-one-that-s-with-you] is a book by photographer Chase Jarvis, celebrating mobile phone cameras, not for their photographic or technical quality, but rather for the fact that people usually have them when interesting photographic subjects appear. This is advice often given to novice photographers, sometimes with the slight change "The best camera is the one you use most." A cheap {{w|Nikon Coolpix}} camera can be better than a professional {{w|Canon EOS}}, simply for the fact it is lightweight enough to be taken on ''every'' voyage you'll make. A fancy expensive camera that isn't at hand for you to use is of no value for taking pictures. |
− | + | However, in this case "the best camera" refers to the {{w|James Webb Space Telescope}} (JWST), the spacecraft depicted in the third frame. It can be considered a camera because it takes pictures, and it's the best {{w|space telescope}} to date in terms of {{w|aperture}} size and thus {{w|angular resolution}}.[https://astronomy.stackexchange.com/questions/26373/relation-between-angular-resolution-and-aperture] The first pictures taken by the telescope were released on 11-12 July 2022, days before this comic was published.[https://www.nasa.gov/webbfirstimages] The pictures from JWST show objects as they were [https://webbtelescope.org/contents/media/images/2022/035/01G7HRYVGM1TKW556NVJ1BHPDZ as much as 13.1 billion years ago,] which is unprecedented. The telescope has [https://www.stsci.edu/jwst/instrumentation three instruments that can act as "cameras" for imaging,] a fourth {{w|optical spectrometer|spectrometer}}-only instrument, and many dozens of {{w|optical filter}}s. Because the telescope can only take infrared photographs invisible to the human eye, [https://jwst-docs.stsci.edu/files/97978094/97978104/1/1596073152120/NIRCam_filters_modules.png each of the filters has been assigned a standardized visible color] to convert images for viewing. However, astronomers are encouraged to use [https://www.youtube.com/watch?v=-dmiS_6YrGU&t=449s other color schemes] when using a portion of the filters' range or rendering {{w|interferometry}},[https://jwst-docs.stsci.edu/jwst-near-infrared-imager-and-slitless-spectrograph/niriss-observing-modes/niriss-aperture-masking-interferometry][https://jwst-docs.stsci.edu/jwst-near-infrared-camera/nircam-observing-modes/nircam-coronagraphic-imaging][https://jwst-docs.stsci.edu/jwst-mid-infrared-instrument/miri-observing-modes/miri-coronagraphic-imaging] and to [https://www.youtube.com/watch?v=sNJR3lenz1I&t=293s convert very distant objects to their original color] from {{w|redshift}}ed infrared when possible. | |
− | The title text references {{w|Lagrange Point|Lagrange Point 2}} (L<sub>2</sub>). The Lagrange Points are five locations | + | The title text references {{w|Lagrange Point|Lagrange Point 2}} (L<sub>2</sub>). The Lagrange Points are five locations which are solutions to the {{w|restricted three-body problem}}, in which one of the bodies is much less massive than the other two. A low-mass body in one of these locations is able to be stationary relative to the other two bodies with very little fuel needed for trajectory corrections. In this case, the JWST orbits around the L<sub>2</sub> point of the Earth-Sun system [https://space.stackexchange.com/a/57378 rather than being stationed exactly at it] to avoid shadows from the Earth and Moon that would cause harmful temperature and power variations.[https://ntrs.nasa.gov/citations/20190028885] It avoids the problem the {{w|Hubble Space Telescope}} had orbiting the Earth, allowing only a short observation window per orbit. The HST could be used for about 55 minutes of every 95-minute orbit for targets not sufficiently above or below its orbital plane. |
==Transcript== | ==Transcript== | ||
− | :[Each panel features an image of space, with text printed in white at the top of each panel. The first panel | + | {{incomplete transcript|Do NOT delete this tag too soon.}} |
+ | |||
+ | :[Each panel features an image of space, with text printed in white at the top of each panel. The first panel says:] | ||
:They say the best camera is the one you have with you. | :They say the best camera is the one you have with you. | ||
− | :[ | + | :[A panel showing more stars and galaxies visible.] |
:It turns out | :It turns out | ||
− | :[ | + | :[A panel showing even more stars and galaxies visible. At the center of the panel is an outline drawing in white of the James Webb Space Telescope.] |
− | : | + | :they're wrong. |
{{comic discussion}} | {{comic discussion}} | ||
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[[Category:Astronomy]] | [[Category:Astronomy]] | ||
[[Category:Telescopes]] | [[Category:Telescopes]] | ||
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