Videos

14325 readers

271 users here now

For sharing interesting videos from around the Web!

Rules

Videos only
Follow the global Mastodon.World rules and the Lemmy.World TOS while posting and commenting.
Don't be a jerk
No advertising
No political videos, post those to [email protected] instead.
Avoid clickbait titles. (Tip: Use dearrow)
Link directly to the video source and not for example an embedded video in an article or tracked sharing link.
Duplicate posts may be removed

Note: bans may apply to both [email protected] and [email protected]

founded 1 year ago

MODERATORS

What if we aimed the Hubble Telescope at Earth? - Minute Earth are working together with xkcd to animate "What If" questions! (www.youtube.com)

submitted 11 months ago by [email protected] to c/videos

21 comments fedilink hide all child comments

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

[–] them 3 points 11 months ago (1 children)

Is focus to infinity that different for these types of scopes compared to a conventional camera which focuses to infinity after a couple hundred metres? I would have thought the draw back would be the focal lengths giving you a very small area in frame.

[–] [email protected] 1 points 11 months ago* (last edited 11 months ago)

Focal length and aperture both affect how much focus matters.

Also with most regular cameras, from what I've heard they actually have their max focus slightly past infinity to account for thermal expansion so the general advice for doing astrophotography is to focus on the subject, not just whacking it to infinity.