NASA completes Webb Space Telescope rollout deployment to begin scientific missions this summer. Photo: VCG

The James Webb Space Telescope will produce "spectacular color images" of the cosmos in mid-July - its first observations dedicated to its mission of scientific discovery, an astronomer overseeing the project said Monday.

The successor to Hubble has spent the last five months aligning its instruments in preparation for the big reveal, with scientists deliberately remaining coy about where the cameras will be pointed.

"We'd really like it to be a surprise," Klaus Pontoppidan, a scientist at the Space Telescope Science Institute in Baltimore told reporters.

NASA and its partners the European Space Agency (ESA) and Canadian Space Agency (CSA) formed a committee to create a ranked list of objects, which they now intend to work through. 

Webb's team has already released a series of star field images taken for calibration purposes, but the new photographs will be of astrophysics targets, key to deepening humankind's understanding of the universe, said Pontoppidan. 

These images will actually be shot in infrared, and then colorized for public consumption.

Visible and ultraviolet light emitted by the very first luminous objects has been stretched by the universe's expansion, and arrives today in the form of infrared, which Webb is equipped to detect with unprecedented clarity - giving it an unprecedented view of the first stars and galaxies that formed some 13.5 billion years ago.

Webb, which is expected to cost NASA nearly $10 billion, is among the most expensive scientific platforms ever built, comparable to the Large Hadron Collider at CERN, and its predecessor telescope, Hubble.

AFP