![]() It was expected that 879 plate pairs would be required. This figure specifies the position of the plate center, hence the actual coverage under the original plan would have been to approximately -27°. The survey was originally meant to cover the sky from the north celestial pole to -24° declination. This allowed the color of celestial objects to be recorded. Each region of the sky was photographed twice, once using a red sensitive Kodak 103a-E plate, and once with a blue sensitive Kodak 103a-O plate. The survey utilized 14-inch square photographic plates, covering about 6 ° of sky per side (approximately 36 square degrees per plate). 99% of the plates were taken by June 20, 1956, but the final 1% was not completed until December 10, 1958. The first photographic plate was exposed on November 11, 1949. Humason, Walter Baade, Ira Sprague Bowen and Rudolph Minkowski. Among the primary minds behind the project were Edwin Hubble, Milton L. The photographs were taken with the 48-inch Samuel Oschin telescope at Palomar Observatory, and the astronomical survey was funded by a grant from the National Geographic Society to the California Institute of Technology. It was conducted at Palomar Observatory, California, United States, and completed by the end of 1958. Baby stars or protostars are, like baby dogs and baby children, very active, and like blowing at the cloud where they are born, opening holes like the one you see in the centre of the image.The National Geographic Society – Palomar Observatory Sky Survey ( NGS-POSS, or just POSS, also POSS I) was a major astronomical survey, that took almost 2,000 photographic plates of the night sky. ![]() The cloud contains baby stars (called "protostars") that are being formed, surrounded by tiny disks where their planetary systems will be born as well (these are called "protoplanetary disks"). You can learn more about the Calar Alto Observatory and their work by checking out their web site at The images show what IC1396A looks like through the eyes of the visible-light telescopes (with the Large Area Imager and the CAFOS/2.2m telescope) based at Calar Alto Observatory in Spain and in two infrared colours with the Spitzer Space Telescope and the Herschel Space Telescope. The images are the same gas and dust cloud, which is called IC1396A and is located in the Cepheus constellation. You will now get to study images taken by different telescopes. Now, read our What do we see through the eyes of different telescopes? worksheet to learn more.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |