Astrophoto Lab
--- your online source for astronomical & satellite images ---

General Information
Special Galleries
Deep Space
Stars, Supernovae
Solar System
Earth from Space
NASA Space Programs
Other Astro Images
Space Image Gallery
Useful Links
Credits & Useage
Name: NGC 4707
Description: Spiral galaxy
Position (J2000): RA 12h 48m 21.96s Dec 51° 9' 43.04"
Constellation: Canes Venatici
Distance: 22 million light years
Visual magnitude: 13
Angular size: 1.2 × 1.1 arcmin
Field of view: 2.96 x 2.01 arcminutes
Orientation: North is 69.2° right of vertical
Image Credit: ESA/Hubble & NASA
Release date: December 19, 2016

Click the image to buy a print


On a clear evening on April 26, 1789, the renowned astronomer William Herschel continued his unrelenting survey of the night sky, hunting for new cosmic objects - and found cause to celebrate! Lengthening his impressive list of cosmic discoveries yet again, the astronomer spotted this bright spiral galaxy, named NGC 4707, lurking in the constellation of Canes Venatici (The Hunting Dog). NGC 4707 lies roughly 22 million light-years from Earth.

Over two centuries later, the NASA/ESA Hubble Space Telescope is able to view the same galaxy in far greater detail than Herschel could, allowing us to appreciate the intricacies and characteristics of NGC 4707 as never before. This striking image comprises observations from Hubble's Advanced Camera for Surveys (ACS), one of a handful of high-resolution instruments currently aboard the space telescope.

Herschel himself reportedly described NGC 4707 as a "small, stellar" galaxy; while it is classified as a spiral (type Sm), its overall shape, center, and spiral arms are very loose and undefined, and its central bulge is either very small or non-existent. It instead appears as a rough sprinkling of stars and bright flashes of blue on a dark canvas, as if a pointillist painter had dotted the cosmos with small pinpricks of bright paint.

The blue smudges seen across the frame highlight regions of recent or ongoing star formation, with newborn stars glowing in bright, intense shades of cyan and turquoise.