4 ms·
I really wish astronomers would come up (or use) a standard mechanism for indicating the field of view of an image. The scale of this one in the night sky is m
by jcims 4y ago
I really wish astronomers would come up (or use) a standard mechanism for indicating the field of view of an image. The scale of this one in the night sky is much larger than the deep field one.
- racingmars 4y agoThe image details do have the dimensions listed in a standard measure down under the "Fast Facts" section; I assume this will be included for every image release. The deep field image says it's about 2.4 arcmin across[1], Stephan's Quintet image is about 7.4 arcmin across[2], etc. [1] https://webbtelescope.org/contents/media/images/2022/035/01G7DCWB7137MYJ05CSH1Q5Z1Z https://webbtelescope.org/contents/media/images/2022/035/01G... [2] https://webbtelescope.org/contents/media/images/2022/034/01G7DA5ADA2WDSK1JJPQ0PTG4A https://webbtelescope.org/contents/media/images/2022/034/01G...
- jcims 4y agoI know that's usually there. I'd just love to see a little map scale bar or something in EXIF. [-----------] ° [--------] ' [----------------------] " [----------------] ,," Super easy.
- jacquesm 4y agoNice idea, really, and very easy to implement.
- deleted 4y ago[deleted]
- oAlbe 4y agoIs there a way to rapport an arcmin to a measurement that would be more easily understandable? Not necessarily as a multiple of grains of rice.
- yvoschaap 4y ago7.3 arcminutes = 16 light-years
- mwint 4y agoWait, but it’s a ~cone, right? So it must be 16ly across at some specific distance from us?
- agrajag 4y agoThat's the distance of an object away that has a parallax of 7.3 arcminutes and a baseline of 1AU. The 7.3 arcminutes referenced here is the width of the image on the celestial sphere.
- zola 4y agoI always translate it in my mind to full moons. 30 arcmin == diameter of full moon as seen from earth.
- sbierwagen 4y agoA minute of arc is one sixtieth of a degree. (A "minute", get it?) The moon is between 29.4 and 33.5 arcminutes wide, depending on where it is in its orbit. So about a tenth of the width of the moon.
- leeoniya 4y ago> So about a tenth of the width of the moon. this is so much more digestible than "grain of sand at arm's length", and those two metrics dont feel at all equivalent -- the moon is not ten grains of sand at arm's length wide, right?
- sbierwagen 4y agoThe moon is pretty darn small. Half a degree wide. Imagine gluing ten grains of sand together, balancing it on a fingertip, then stretching your arm out. Around a degree wide? Depending on your grain of sand, of course.
- DrBazza 4y agoGrain of sand at arms length for yesterday’s deep field.
- _c3ag 4y agois not lovely it reached internet just after 80% of the planet being able to see the sun?