Essex-based E2V created the imaging detectors used on the New Horizons probe in its historic flyby.
Chief engineer David Morris said the firm's two detectors would send back both colour and black and white images.
He said: "It will continue taking more images for the next couple of weeks, looking back at Pluto as it recedes."
One of the images to come back has shown an area of icy mountains on Pluto.
"These were completely unexpected for Pluto, which was why you heard all the 'oohs and ahhs' in the background from NASA.
"It was anticipated it would be icy, it was anticipated that it would be quite smooth with some craters but the formation of what are mountains was quite unexpected."
He said: "There was a certain nervousness that it could all have been for nothing.
"Getting the timing right and the image timing right was going to be crucial. It worked. I was excited and, of course, quite relieved. And very proud."
The team has had a 10-year wait to the see the results of their efforts.
Dr Paul Jerram, chief image sensor engineer at E2V, said: "To see that they have worked after their nine-and-a-half-year journey and have produced images that are way beyond anybody's expectations is amazing."
Mike Culley, of Southend Planitarium, said: "Pluto has been this distant tiny little dot and we've now got these incredible pictures.
"It has turned from a blob into a real world."

The pilgrims congregated from sunrise at the site and the vast plain which surrounds it, about 15km from Mecca.
Muslims believe the Prophet Muhammad gave his last sermon at the location.
The Hajj is one of the five pillars of Islam, which all Muslims are called upon to perform at least once.
On Saturday it emerged that Saudi Arabia's top cleric, Abdul Aziz al-Sheikh, would not deliver the traditional Hajj sermon for the first time in 35 years because of health complications.
It follows controversy sparked by his remarks that Iranians were "not Muslims".
The comments came after Iran's supreme leader Ayatollah Ali Khamenei denounced Saudi Arabia's management of the Hajj.
Iran has boycotted this year's pilgrimage., instead endorsing an alternative event on Saturday at the holy city of Karbala in Iraq.
Tensions between the two countries have risen after a crush in last year's pilgrimage killed at least 2,426 people, including 464 Iranians, according to an unofficial count.
Saudi Arabia and Iran do not have diplomatic relations and are at loggerheads over a series of regional issues including the conflicts in Yemen and Syria.
But news of the Ayatollah's absence has not diminished the enthusiasm of the pilgrims.
"It's marvellous," Egyptian pilgrim Louza, 45, was quoted as saying. "I'm here closer to God. It's an indescribable feeling."
Against a backdrop of other mountains the pilgrims squatted, stood, or climbed up steps constructed into the hill while reciting incantations.
"We feel at ease and are totally benefiting from our pilgrimage," Soumaya, 30, from Mali, told the AFP news agency. Her friend, Khadija Bechir, 23. agreed, praising the event for being well organised.
Pilgrims come from all over the world to the Hajj but Indonesia - the most  populous Muslim nation - has the largest quota.
Official figures issued late on Saturday revealed that more than 1.3 million pilgrims attending the Hajj are from outside Saudi Arabia.
A vast expanse of white fireproof tents has been pitched at Mina, to accommodate in excess of 2.5 million pilgrims.
The stampede in Mina last September is considered to be the worst disaster in Hajj  history. It took place as pilgrims were going to the Jamarat Bridge for a stoning ritual which this this year will start on Monday, officials say.
Saudi Arabia has consistently downplayed the number of casualties. It has announced an investigation but no conclusions have been released.
An engineer involved in the sensors for the space probe launched to study Pluto has told of the "nervous" wait for the first images to come back.
[NEXT_CONCEPT]
The annual Hajj  pilgrimage in Saudi Arabia has reached its climax with 1.5 million Muslims gathering at Mount Arafat to offer day-long prayers and recitations from the Koran.