Astronomy

4053 readers

63 users here now

founded 2 years ago

MODERATORS

[email protected]

478

Size Comparison: Pluto and Australia (sopuli.xyz)

submitted 3 months ago by [email protected] to c/[email protected]

93 comments fedilink hide all child comments

Source

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 19 points 3 months ago (2 children)

This picture is inaccurate, Pluto is actually much farther away.

[–] [email protected] 5 points 3 months ago* (last edited 3 months ago)

No it's just really small

[–] mindbleach 3 points 3 months ago (2 children)

Telephoto shot, using a 1e50 mm lens.

[–] [email protected] 2 points 3 months ago (1 children)

if anyone wants to do the math, how far away from the sun would the camera have needed to be to take such a photo?

[–] mindbleach 2 points 3 months ago

Apparent scale is inverse linear, i.e., proportional to 1 / distance. If we want the apparent scale of two objects to be about 90% accurate to their actual relative scale, their relative distances to the camera can't be more than 10% different. Pluto being 40-ish astronomical from Earth, you'd want to shoot from about 400 AU. Voyager I should be in prime position circa 2140.

[–] [email protected] 1 points 3 months ago

Probably not necessary to use a lens so long it can reach distant galaxies!