New Hubble Ultra Deep Field In Infrared
Hynee writes "Just in time for Christmas, HubbleSite has released a Hubble Ultra Deep Field redux. The original was in visible light; this version, five years on, is in infrared (1.05, 1.25 and 1.6 um).
The observation is in support of the upcoming JWST, which will observe exclusively in infrared, but the newly installed WFC3 does seem to provide some extra resolution over the 2004 visible observations with WFC2."
That picture represents a tiny tiny 11 arc-minute square of the sky (according to Wikipedia, it's like looking through a 1mm x 1mm square hole from 1m away) and it is absolutely jam packed with galaxies, each one containing millions of stars.
I read the internet for the articles.
The Hubble has a tiny mirror. Imagine what we could see if it was 10m or 20m. We can do it easily! Well ok maybe not easy, but we should do it, no matter the cost.
"Men willingly believe what they wish." - Julius Caesar
That is truly amazing. I've been out of the field for about a decade now since retiring, but when I got my PhD in Astronomy in the 1960s, we never expected to have such fantastic photography of the celestial bodies. This is truly a tremendous accomplishment by all involved.
Perhaps a stupid question, but is 500 million years enough time for all of these spiral galaxies to form?
My karma ran over your dogma
I took the 2004 UDF image and rotated/cropped as needed to match with the 2009 UDF image so you can switch between the two and compare the differences.
2004 UDF | 2009 UDF
The new image uses infrared versus the visible light filters from the 2004 image. The resolution may not differ much between the two images, but the infrared will pick up deeper objects that we missed with the visible light filters. However the visible light image tends to pick up more detail such as in the spiral galaxy in the middle-left. That galaxy is known as UDF 7556 and what you see is how it was 6.1 billion years after the big bang.
This stuff is so cool.