Update on Largest Optical Telecope

Message boards : SETI@home Science : Update on Largest Optical Telecope

Author	Message
Sirius B Volunteer tester Send message Joined: 26 Dec 00 Posts: 6953 Credit: 1,292,466 RAC: 368	Message 1299343 - Posted: 27 Oct 2012, 12:08:32 UTC
	Largest Optical Telescope in the World Update Some stunning images. ____________
	ID: 1299343 ·

Johnney Guinness Volunteer tester Send message Joined: 11 Sep 06 Posts: 2946 Credit: 2,306,100 RAC: 24	Message 1299374 - Posted: 27 Oct 2012, 13:51:25 UTC Last modified: 27 Oct 2012, 14:03:26 UTC
	Great article! They have an image in the article and they "claim" that it was taken by the ALMA array, but its not. The image is an optical image of a galaxy, its not a radio telescope image. If the image is authentic, then maybe its got ALMA data superimposed on top of the optical image; On the ALMA website, it has the original images; http://www.almaobservatory.org/en/visuals/images/astronomy This is the data for the Antennae Galaxy; http://www.almaobservatory.org/en/visuals/images/astronomy/?g2_itemId=3431 ALMA did NOT take this image! Its a composite image. This is the radio data that ALMA took; John.
	ID: 1299374 ·

Bob DeWoody Send message Joined: 9 May 10 Posts: 684 Credit: 64,340 RAC: 77	Message 1299994 - Posted: 28 Oct 2012, 23:12:42 UTC
	So, is it an optical telescope or a radio telescope? ____________ Bob DeWoody
	ID: 1299994 ·

Johnney Guinness Volunteer tester Send message Joined: 11 Sep 06 Posts: 2946 Credit: 2,306,100 RAC: 24	Message 1299999 - Posted: 28 Oct 2012, 23:21:43 UTC - in response to Message 1299994. Last modified: 28 Oct 2012, 23:22:45 UTC
	So, is it an optical telescope or a radio telescope? Its a radio telescope Bob, The ALMA radio telescope is so powerful, if you compile the data properly, they can convert the radio data into an image. It produces what looks like a blobby image. In my last post, i posted 2 pictures. One has the radio telescope data in the image on its own. The other picture was probably taken with the Hubble telescope and they superimposed the radio data on top of the Hubble image. The blobby image is the ALMA radio data image. John.
	ID: 1299999 ·

Sirius B Volunteer tester Send message Joined: 26 Dec 00 Posts: 6953 Credit: 1,292,466 RAC: 368	Message 1301486 - Posted: 2 Nov 2012, 23:51:20 UTC - in response to Message 1299994.
	Good question as the original report states Optical, whereas the Mail says Radio. According to the ESO, it's Optical. ____________
	ID: 1301486 ·

Josef W. Segur Volunteer developer Volunteer tester Send message Joined: 30 Oct 99 Posts: 3969 Credit: 937,921 RAC: 170	Message 1301561 - Posted: 3 Nov 2012, 4:33:12 UTC - in response to Message 1299994.
	Both, in the sense that the sub-millimeter wave end of its range overlaps with a part of the electromagnetic spectrum known as far infrared. However, it gets nowhere near the visible light range which human eyes can perceive. Joe
	ID: 1301561 ·

John McCallum Send message Joined: 5 Dec 04 Posts: 794 Credit: 220,778 RAC: 147	Message 1302144 - Posted: 4 Nov 2012, 16:46:22 UTC - in response to Message 1301486. Last modified: 4 Nov 2012, 16:49:19 UTC
	If the picture in the Mail is the right one then it is definitely a radio telescope ____________ To get back my youth I would do any thing in the world EXCEPT take Exercize,GET up early or be RESPECTABLE.
	ID: 1302144 ·

Sirius B Volunteer tester Send message Joined: 26 Dec 00 Posts: 6953 Credit: 1,292,466 RAC: 368	Message 1302295 - Posted: 4 Nov 2012, 22:07:48 UTC - in response to Message 1302144.
	That is a Radio Telescope. On checking back to the original thread, it looks like I made a mistake. What caught me out was the labelling of the report in the Mail as VLT. There seems to be 2 seperate telescopes in Chile. Check the link in the original thread from the BBC - the photo of the telescope is nothing like the one in the Mail. Sorry about that guys. Sidenote: either way, they're both excellent telescopes. ____________
	ID: 1302295 ·

tullio Send message Joined: 9 Apr 04 Posts: 2951 Credit: 266,077 RAC: 247	Message 1302349 - Posted: 5 Nov 2012, 1:33:25 UTC - in response to Message 1302295.
	There are many optical telescopes in Chile, due to the optimal "seeing". The ALMA is a millimeter band radio telescope, with many antennas. Tullio ____________
	ID: 1302349 ·

Message boards : SETI@home Science : Update on Largest Optical Telecope