File:Hubblecast 21 Special.webm

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Original file ‎(WebM audio/video file, VP8/Vorbis, length 7 min 42 s, 1,920 × 1,080 pixels, 3.62 Mbps overall, file size: 199.51 MB)

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English: In this new Hubblecast episode, Dr. J guides us through the fourth chapter of Eyes on the Skies, the International Astronomical Union's movie celebrating the telescope on its 400th anniversary in 2009.

Observing the Universe through the eyepiece of a telescope is one thing, but recording the observations for posterity is something quite different. Originally astronomers used pen and paper to draw what they saw, but the human eye is a lousy detector and our brain can play tricks on us. Astrophotography, first explored in the mid-nineteenth century, has proved to be a powerful, objective way of recording telescopic images with the advantage that long exposures revealed much more than the eye could ever see. But the true revolution arrived with electronic detectors and digital image processing.

Credit:ESA/Hubble (M. Kornmesser & L. L. Christensen)
Date
Source Hubblecast 21 Special: From silver to silicon
Author see above
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This file is licensed under the Creative Commons Attribution 4.0 International license.
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File history

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Date/TimeThumbnailDimensionsUserComment
current10:07, 8 March 20187 min 42 s, 1,920 × 1,080 (199.51 MB)ComputerHotline (talk | contribs)Imported media from https://cdn.spacetelescope.org/archives/videos/hd_1080p25_screen/hubblecast21a.mp4

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Transcode status

Update transcode status
Format Bitrate Download Status Encode time
VP9 1080P 2.86 Mbps Completed 02:39, 29 August 2018 30 min 6 s
Streaming 1080p (VP9) 2.75 Mbps Completed 19:45, 1 March 2024 13 s
VP9 720P 1.37 Mbps Completed 02:26, 29 August 2018 17 min 29 s
Streaming 720p (VP9) Not ready Unknown status
VP9 480P 750 kbps Completed 02:20, 29 August 2018 11 min 23 s
Streaming 480p (VP9) 634 kbps Completed 14:14, 18 March 2024 4.0 s
VP9 360P 461 kbps Completed 02:16, 29 August 2018 7 min 22 s
Streaming 360p (VP9) Not ready Unknown status
VP9 240P 306 kbps Completed 02:15, 29 August 2018 6 min 19 s
Streaming 240p (VP9) 191 kbps Completed 08:09, 2 January 2024 2.0 s
WebM 360P 559 kbps Completed 10:13, 8 March 2018 5 min 33 s
Streaming 144p (MJPEG) 832 kbps Completed 00:41, 15 November 2023 30 s
Stereo (Opus) 111 kbps Completed 02:43, 24 November 2023 9.0 s
Stereo (MP3) 128 kbps Completed 21:02, 9 November 2023 15 s

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