Published as the “Picture of the Week” of the Hubble Space Telescope on October 25, 2021, this image captures the barred spiral galaxy NGC 2903. NGC 2903 is about 30 million light-years away in the direction of Leo.
This image was taken with the Hubble Space Telescope ACS (Advanced Camera for Surveys) and WFC3 (Wide Field Camera 3). ACS was installed on the Hubble Space Telescope in 2002 and WFC3 was installed on the Hubble Space Telescope in 2009.
This is an image of NGC 2903 taken by the Hubble Space Telescope in 2001, before ACS and WFC3 were installed. It was shot with WFPC2 (Wide Field and Planetary Camera 2), which was the main observation device of the Hubble Space Telescope until it was replaced with WFC3.
Compared to the 2001 image, the image released this time as Picture of the Week has a higher resolution and a wider wavelength range. Both of the images in this article have reduced resolution, but the original image is 1478 x 1502 pixels in 2001, while the image this time is 5903 x 3959.
The Hubble Space Telescope was designed for maintenance missions on the Space Shuttle. Until the Space Shuttle was retired in 2011, a total of five maintenance missions were carried out, including equipment replacement (Reference article: Hubble Space Telescope-History of launch and five maintenance missions).
Image Credit: ESA/Hubble & NASA, L. Ho, J. Lee and the PHANGS-HST Team
Please see the original site (Astrocyte) for a large image.