He is known for his photographs of deep sky objects.

Before leaving, he took a final look at the mysterious sky object through the optical telescope.

Plays the first Saturday of every month, using deep sky objects currently visible at that time.

Occasionally, sky objects of other shapes broke into the news.

The Cancer constellation also has several notable deep sky objects.

Previous games called xiàngqí may have been based on the movements of sky objects.

That why you see astronomers using light buckets to get good images of deep sky objects.

There are two faint deep sky objects within the constellation's borders.

Observatory staff recognizes that the day is coming when observation of deep sky objects will no longer be possible from the site.

A lot of what we look for is deep sky objects.