KECKOBSERVATORY.ORG W. M. Keck Observatory – The Keck Observatory telescopes on Maunakea in Hawaii, are the world’s largest optical and infrared telescopes. Keck Observatory's vision is to advance the frontiers of astronomy and share our discoveries with the world.

keckobservatory.org Website Information

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keckobservatory.org desktop page speed rank

Last tested: 2015-09-19


Desktop Speed Bad
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keckobservatory.org mobile page speed rank

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keckobservatory.org mobile page usability

Last tested: 2019-06-29


Mobile Usability Good
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keckobservatory.org Mobile Usability Test Quick Summary


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Errors

Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)

Line: 102 Column: 1 - 23
"... <style type="text/css"> body ..."

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Line: 109 Column: 7 - 83
"...e"> <img src="http://www.keckobservatory.org/images/home_slides/slide-1-new.jpg"> ..." Line: 120 Column: 7 - 83
"...e"> <img src="http://www.keckobservatory.org/images/home_slides/slide-2-new.jpg"> ..." Line: 131 Column: 7 - 79
"...e"> <img src="http://www.keckobservatory.org/images/home_slides/slide-3.jpg"> ..." Line: 142 Column: 7 - 79
"...e"> <img src="http://www.keckobservatory.org/images/home_slides/slide-2.jpg"> ..." Line: 160 Column: 47 - 92
"... href="/"><img src="/images/layout/keck-logo-small.png"> W. M...." Line: 206 Column: 1 - 30
"...friends"> <img src="/images/donors.jpg"> <p> V..." Line: 212 Column: 1 - 35
"...="/fans"> <img src="/images/layout/fans.jpg"> <p> A..." Line: 218 Column: 1 - 41
"...science"> <img src="/images/layout/scientists.jpg"> <p> T..." Line: 225 Column: 76 - 117
"...rg/video"><img src="/images/layout/cosmic_cams.jpg"></a> ..." Line: 292 Column: 20 - 65
"... href="/"><img src="/images/layout/keck-logo-small.png"> W. M...."

Attribute “webkitallowfullscreen” not allowed on element “iframe” at this point.

Line: 281 Column: 2 - 148
"...iv> <br> <iframe src="//player.vimeo.com/video/220576007" width="630" height="355" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></ifra..."

Attribute “mozallowfullscreen” not allowed on element “iframe” at this point.

Line: 281 Column: 2 - 148
"...iv> <br> <iframe src="//player.vimeo.com/video/220576007" width="630" height="355" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></ifra..."

The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.

Line: 281 Column: 2 - 148
"...iv> <br> <iframe src="//player.vimeo.com/video/220576007" width="630" height="355" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></ifra..."

Warnings

Document uses the Unicode Private Use Area(s), which should not be used in publicly exchanged documents. (Charmod C073)

Line: 195 Column: - 35
"...submit" value="" type="submit..."

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keckobservatory.org Ping

Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.


keckobservatory.org TRACEROUTE

Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop is a measure of the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated.