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==Explanation==
 
==Explanation==
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This comic is in reference to [https://www.theverge.com/2019/11/11/20958727/mercury-transit-sun-planet-nasa-astronomy the transit of the planet Mercury across the Sun] on November 11, 2019 (the date of the publication of this comic), which appeared from Earth as a small black dot moving against the background of the Sun. [[Randall]] has made comics about solar transits before, albeit about the transit of the International Space Station, in [[1828: ISS Solar Transit]] and [[1830: ISS Solar Transit 2]]. Viewing a solar transit requires a {{w|Astronomical filter|special lens filter}} to prevent the intense light from the Sun from burning out a telescope's imaging sensor.
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{{incomplete|Created by a BOT. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}
  
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The {{w|hashtag}} #nofilter is typically used on photo sharing sites, especially Instagram, to humblebrag about having encountered situations so photogenic that no further image enhancement ("{{w|Photographic filter|filter}}") is required to prepare them for general advertisement. In this comic, the hashtag is instead used to cap off an image about the predicament of the poster, where the lack of a proper astronomic filter has led to damage of personal property. The image shown on the comic is quite bright and {{w|Clipping (photography)|blown out}}, and though the poster did manage to get a picture of Mercury, the sun's bright light permanently damaged their telescope.
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The {{w|hashtag}} #nofilter is used on social media to punctuate posts containing strong, often unpopular, opinions. This hashtag is also quite common on Instagram, where it is typically used to humblebrag about having encountered situations so photogenic that no further image enhancement ("{{w|Photographic filter|filter}}") is required to prepare them for general advertisement.
  
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The title text refers to a still different meaning of the word "filter"; it imagines a swimming pool growing {{w|Algae|green scum}} in the absence of a {{w|Swimming_pool_sanitation#Private_pool_filtration|water filter}}, as opposed to a photographic or astronomic filter.
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In this comic, the hashtag is instead used to cap off an image about the predicament of the poster, where lacking proper filtering equipment has led to damage or decay of personal property.
  
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Although not directly referred to in this comic (although a variant was used in [[1911: Defensive Profile]]), a third common [https://www.urbandictionary.com/define.php?term=No%20Filter variation of "No filter"] is possibly alluded to here and can refer to someone who makes, or posts, tactlessly candid comments. While often this means comments that reflect the individual's actual views which are potentially offensive or socially unacceptable, it could also refer to someone who posts every mundane detail of their lives, such as what is growing in their swimming pool (as is shown in the title text). Multiple layers of meaning makes this pretty clever word play.
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The caption below the panel refers to the [https://www.theverge.com/2019/11/11/20958727/mercury-transit-sun-planet-nasa-astronomy the transit of the planet Mercury across the Sun], on November 11, 2019 (the date of the publication of this comic), which appeared from Earth as a small black dot moving against the background of the Sun. Photographing the transit requires a {{w|Astronomical filter|special lens filter}} to prevent the intense light from the Sun from burning out the camera's sensor.
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The title text is a different meaning of the word "filter"; it refers to a swimming pool growing {{w|Algae|green scum}} in the absence of a {{w|Swimming_pool_sanitation#Private_pool_filtration|water filter}} as opposed to a photographic filter.
  
 
==Transcript==
 
==Transcript==
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:[Panel showing the sun partially obscured by clouds with faded gray blue sky around the sun, mainly upper right, as there are clouds in the lower left part. The image is very bright and blown out at the bottom left, obscuring most of the surface detail of the sun.  A small black dot is visible in the upper-right part of the sun's image.]
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:[Panel showing the sun partially obscured by clouds. The image is very bright and blown out, with no details visible.]
  
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:[Caption below panel, with a yellow unhappy smiley before the hash tag:]  
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:[Caption below the panel:]
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:This photo of the transit of Mercury fried my telescope's imaging sensor 🙁 #NoFilter
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:This photo of the transit of Mercury fried my telescope's imaging sensor 🙁
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:#nofilter
  
 
{{comic discussion}}
 
{{comic discussion}}
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[[Category:Astronomy]]
 
[[Category:Comics with color]]
 
[[Category:Comics with color]]
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[[Category:Astronomy]]
 
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[[Category:Puns]]
 

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