| Reasons for observing in space has already been 
							covered in
							Space Observatories so I will not repeat it 
							here. What will be mentioned here is the 
							breakthrough observations of the Hubble Space 
							Telescope.
 The
							
							"un-official" Hubble Space Telescope website is 
							a good visit. Also of interest in a website full of obscure 
							facts and information on space exploration - 
							AeroSpaceGuide. For your dose of Hubble News, visit the
							
							HubbleSite News Center. Much of our ideas of a wide variety of 
							phenomenon have been reshaped thanks to this 
							remarkable telescope. The success is mainly due to 
							lack of 
							atmospheric interference - the bane of
							astrophotographers here on Earth. Sure the adaptive 
							optics breakthrough of the Keck 
							telescopes have 
							circumvented the atmospheric interference problem, 
							but nothing beats removing that affect altogether. 
							Because the Hubble is in space and does not suffer 
							from daylight, some of the deepest and most dramatic 
							photographs have been released. 
								
									|  | The Hubble Space Telescope 
									concept was initially discussed back in 
									1960's and scientific proposals for the 
									telescope was drafted in 1977.  
									Original orbital insertion date of the 
									telescope scheduled for 1983.  Cost 
									delays and the loss of the Space Shuttle 
									Challenger in 1986 pushed back Hubble's 
									orbital insertion to 1990.   
									Original plans dictated an operation status 
									of 15 years. |   The Hubble has been active for 14 years and 
							is still running strong. The instrumentation of 
							Hubble: 
								A 2.4 meter primary mirror using a 
								Ritchey-Chretien designAdvanced Camera for Surveys - ACS: study 
								planetary atmospheres, study groups of 
								galaxies 
								and overall generalized imageryWide Field and Planetary Camera - WFPC2: 
								most images are captured with this piece of 
								equipmentNear Infrared Camera and Multi-Object 
								Spectrometer - NICMOS: sees more heat than 
								light, allows penetration of dust clouds within 
								our galaxy.Space Telescope Imaging 
								Spectrograph - STIS: 
								allows study of spectraFine Guidance Sensor - FGS: allows Hubble to 
								stay on target 
									
										|  | Because the Hubble Space Telescope 
										is outside our Earth's 
										atmosphere, the 
										telescope and its instrumentation allow 
										for a much larger portion of the
										
										EM-band 
										to be studied. Each of the instruments 
										onboard are specifically tuned for a 
										specific region of the
										EM-band, but as a 
										hole cover an area far greater than any 
										traditional
										telescope on Earth.   Hubble is in what is called a 
										"low-Earth orbit," only 600km above the 
										surface. One orbit of Hubble takes about 
										96 minutes. |  Additional information on the history and 
								timeline of the Hubble can here found at the
								
								ESA's Hubble Space Telescope website. 
									
										| Possibly the greatest achievement of 
										the Hubble telescope is the Hubble Deep 
										Field. The latest deep field image was 
										released on March 9, 2004. Every object 
										is this image is a 
										galaxy, some 10,000 
										of them. Over 800 exposures, 400 orbits, 
										and a total exposure time of 11.3 days 
										resulted in the deep field image on the 
										right. This is an example of what a 
										space based observatory can do. |  |  A few of Hubble's Greatest Hits: There have been 3 major Servicing Missions - 
								or SM's - with a forth initially scheduled for 
								January 2004. The loss of the Space Shuttle 
								Columbia in February 2003 forced NASA to cancel 
								that mission. Although the public and 
								scientific communities are angered by NASA's 
								decision, it should be know that the Hubble, in 
								its current state, is predicted to be 
								operational until the years 2007 to 2008. 
								Details of the Assessment report release in 
								January 2005 can be found on the
								
								Hubble Space Telescope website. The 
								successor to Hubble is the
								
								Next Generation Space Telescope - or NGST. 
								Currently in its design stages, predicted launch 
								is said to be around January 2008 - about the 
								time the Hubble is predicted to shut down. Back to 
							Top |