IPB

Welcome Guest ( Log In | Register )

8 Pages V  « < 5 6 7 8 >  
Reply to this topicStart new topic
Radar And Mariner 10, Best possible mapping, pre-Messenger
JRehling
post Jan 5 2008, 05:46 AM
Post #91


Senior Member
****

Group: Members
Posts: 1572
Joined: 20-April 05
Member No.: 321



[...]
Go to the top of the page
 
+Quote Post
hendric
post Jan 6 2008, 04:19 AM
Post #92


Director of Galilean Photography
***

Group: Members
Posts: 713
Joined: 15-July 04
From: Austin, TX
Member No.: 93



QUOTE (tedstryk @ Jan 4 2008, 07:20 PM) *
On a more abstract level, I often wonder how much variation there is between different sets of eyes. I have gotten into long debates with people who are looking through my telescope and could swear it has a cool hue while others swear it has a warm hue. I have noticed that on many nights, it looks cool in my left eye and warm in my right eye. Perhaps this is what gives me my opinion on color.


It's quite common, apparently. I notice even during normal lighting that one of my eyes is slightly warmer than the other. Another thing could be contacts, most are tinted slightly blue and could give a cooling effect. In talking with my optometrist, most people do have a difference in perceived color between their eyes, but never notice it.


--------------------
Space Enthusiast Richard Hendricks
--
"The engineers, as usual, made a tremendous fuss. Again as usual, they did the job in half the time they had dismissed as being absolutely impossible." --Rescue Party, Arthur C Clarke
Mother Nature is the final inspector of all quality.
Go to the top of the page
 
+Quote Post
nprev
post Jan 6 2008, 05:35 AM
Post #93


Senior Member
****

Group: Moderator
Posts: 7092
Joined: 8-December 05
From: Los Angeles
Member No.: 602



My brother is both color-blind (red-green, which apparently enhances contrast perception) and an optometrist; I'll ask his opinion, this is interesting.


--------------------
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
peter59
post Jan 7 2008, 07:03 PM
Post #94


Member
***

Group: Members
Posts: 529
Joined: 20-April 05
From: Poland
Member No.: 299



Mariner 10 - First encounter with Mercury.

Attached Image

Image FDS0025326 - one day before closest approach (87 day of year 74)

Attached Image

Image FDS0025337 - one day before closest approach (87 day of year 74)


--------------------
Free software for planetary science (including Cassini Image Viewer).
http://members.tripod.com/petermasek/marinerall.html
Go to the top of the page
 
+Quote Post
tedstryk
post Jan 7 2008, 10:00 PM
Post #95


Interplanetary Dumpster Diver
****

Group: Moderator
Posts: 4241
Joined: 17-February 04
From: Powell, TN
Member No.: 33



Here is a more distant approach view showing a lot of the uncharted territory.

Attached Image


--------------------
Go to the top of the page
 
+Quote Post
peter59
post Jan 9 2008, 06:47 PM
Post #96


Member
***

Group: Members
Posts: 529
Joined: 20-April 05
From: Poland
Member No.: 299



Mariner 10 - First encounter with Mercury (March 29, 1974, 2046 UT)

Attached Image

Image FDS001341 (March 30, 1974, 1215 UT)
Attached Image

Image FDS001220 (March 30, 1974, 1200 UT)


--------------------
Free software for planetary science (including Cassini Image Viewer).
http://members.tripod.com/petermasek/marinerall.html
Go to the top of the page
 
+Quote Post
JRehling
post Jan 9 2008, 06:52 PM
Post #97


Senior Member
****

Group: Members
Posts: 1572
Joined: 20-April 05
Member No.: 321



[...]
Go to the top of the page
 
+Quote Post
tedstryk
post Jan 10 2008, 05:25 AM
Post #98


Interplanetary Dumpster Diver
****

Group: Moderator
Posts: 4241
Joined: 17-February 04
From: Powell, TN
Member No.: 33



For the record, since the Mariner-10 outbound mosaic on the photojournal is so small, I have worked for a while (off and on for nearly a year and there are still problems) on creating a large mosaic. Mariner-10 images are so damn hard to work with. Also, with the wild camera pointing, annoying holes show up. I used a low resolution color overlay. I have raced to make a presentable version, since in a few days no one will care.

I don't know that Messenger will solve the problem entirely - they still, for example, use the hideous over-exaggerated color views from the Voyager Saturn encounters even with Cassini data available.

Attached Image


--------------------
Go to the top of the page
 
+Quote Post
JRehling
post Jan 10 2008, 06:55 PM
Post #99


Senior Member
****

Group: Members
Posts: 1572
Joined: 20-April 05
Member No.: 321



[...]
Go to the top of the page
 
+Quote Post
edstrick
post Jan 27 2008, 08:38 AM
Post #100


Senior Member
****

Group: Members
Posts: 1869
Joined: 20-February 05
Member No.: 174



I never understood why they didn't include that data <and from the flyout> in the maps, low-rez as it is. They've always sort of pretended that it didn't exist, other than the outbound terminator visibility of Mozart crater.
Go to the top of the page
 
+Quote Post
tedstryk
post Jan 27 2008, 06:23 PM
Post #101


Interplanetary Dumpster Diver
****

Group: Moderator
Posts: 4241
Joined: 17-February 04
From: Powell, TN
Member No.: 33



Here is the outbound version.

Attached Image


--------------------
Go to the top of the page
 
+Quote Post
tedstryk
post Jan 27 2008, 10:45 PM
Post #102


Interplanetary Dumpster Diver
****

Group: Moderator
Posts: 4241
Joined: 17-February 04
From: Powell, TN
Member No.: 33



Here is a combined version with both inbound and outbound coverage.

Attached Image


--------------------
Go to the top of the page
 
+Quote Post
JRehling
post Jan 27 2008, 11:04 PM
Post #103


Senior Member
****

Group: Members
Posts: 1572
Joined: 20-April 05
Member No.: 321



QUOTE (edstrick @ Jan 27 2008, 12:38 AM) *
I never understood why they didn't include that data <and from the flyout> in the maps, low-rez as it is. They've always sort of pretended that it didn't exist, other than the outbound terminator visibility of Mozart crater.


The only USGS map of Mercury I've ever seen is not really an albedo map. It's an airbrush that show topography as lit from the side, sometimes creating assumed relief where it almost surely must be, but not necessarily as observed by Mariner 10. There is a bit of albedo involved, too (mainly crater rays), but largely just craters on a fairly uniform gray background. So albedo data from farther away would not really add anything to the map such as they rendered it.

BTW, I bought the post-Voyager maps of the Galileans that came from USGS, which were also airbrushed, and quite fun for their time.
Go to the top of the page
 
+Quote Post
tedstryk
post Jan 27 2008, 11:07 PM
Post #104


Interplanetary Dumpster Diver
****

Group: Moderator
Posts: 4241
Joined: 17-February 04
From: Powell, TN
Member No.: 33



Still, there is a lot of beyond the limb topography that they left out as well. They definitely mixed high and low resolution datasets on the Voyager maps.


--------------------
Go to the top of the page
 
+Quote Post
tedstryk
post Jan 28 2008, 01:11 AM
Post #105


Interplanetary Dumpster Diver
****

Group: Moderator
Posts: 4241
Joined: 17-February 04
From: Powell, TN
Member No.: 33



Here is another set, this time in color.

Attached Image


Also, here is a neat little Mariner 10 shot of Jupiter (moons are greatly brightened).

Attached Image


--------------------
Go to the top of the page
 
+Quote Post

8 Pages V  « < 5 6 7 8 >
Reply to this topicStart new topic

 



RSS Lo-Fi Version Time is now: 26th October 2014 - 08:31 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.