IPB

Welcome Guest ( Log In | Register )

 
Reply to this topicStart new topic
Lunokhod 1 found, A new target for laser ranging
SteveM
post Apr 26 2010, 11:03 PM
Post #1


Member
***

Group: Members
Posts: 244
Joined: 5-February 06
Member No.: 675



This press release tells us that the Apache Point Observatory is now getting laser ranges to the newly recovered Lunokhod 1. The reflected signal is twice as strong as that from Lunokhod 2 and this new target means there are now five functioning reflectors on the moon.

Steve M
Go to the top of the page
 
+Quote Post
nprev
post Apr 26 2010, 11:46 PM
Post #2


Senior Member
****

Group: Moderator
Posts: 7002
Joined: 8-December 05
From: Los Angeles
Member No.: 602



Huh. Very cool! Score another victory for LRO! smile.gif

Kind of amazing that they've been trying for almost 40 years to get a laser reflection off of it, yet the reflector was apparently very well-oriented with respect to the Earth. Of course, they did state the detection levels in terms of photons returned, and snagging 2000 is seemingly remarkable performance; the SNR for this sort of thing must be quite low indeed.


--------------------
A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
Go to the top of the page
 
+Quote Post
SteveM
post Sep 30 2010, 12:20 PM
Post #3


Member
***

Group: Members
Posts: 244
Joined: 5-February 06
Member No.: 675



There's a preprint of a paper summarizing the first four months of ranging to Lunokhod 1 that has been submitted to Icarus : "Laser Ranging to the Lost Lunokhod 1 Reflector" at arxiv.org. The authors find Lunokhod 1 to be "especially valuable for science because it is closer to the Moon’s limb than any of the other reflectors and, unlike the Lunokhod 2 reflector, we find that it is usable during the lunar day."

Steve M

This post has been edited by SteveM: Sep 30 2010, 12:48 PM
Go to the top of the page
 
+Quote Post

Reply to this topicStart new topic

 



RSS Lo-Fi Version Time is now: 2nd September 2014 - 06:56 AM
RULES AND GUIDELINES
Please read the Forum Rules and Guidelines before posting.

IMAGE COPYRIGHT
Images posted on UnmannedSpaceflight.com may be copyrighted. Do not reproduce without permission. Read here for further information on space images and copyright.

OPINIONS AND MODERATION
Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators.
SUPPORT THE FORUM
Unmannedspaceflight.com is a project of the Planetary Society and is funded by donations from visitors and members. Help keep this forum up and running by contributing here.