IPB

Welcome Guest ( Log In | Register )

 
Reply to this topicStart new topic
New Horizons Pluto encounter raw image data
elakdawalla
post Jan 20 2015, 03:36 AM
Post #1


Administrator
****

Group: Admin
Posts: 5022
Joined: 4-August 05
From: Pasadena, CA, USA, Earth
Member No.: 454



Today and tomorrow I'm attending the New Horizons science team meeting at APL. Ted Stryk is also present and representing unmannedspaceflight.com. This afternoon we got an update on the plans for raw image data release. The responsible person is Joe Peterson at SwRI Boulder. Some of the highlights of his presentation of interest to this forum:

- The team is committed to delivering raw LORRI image data to the public.
- The team has a stated goal of delivering this data to the Web within 24 hours of receipt from the spacecraft
- The mission will probably start delivering raw image data in an automated fashion in early April (100 days before the flyby), but that date could change.
- When data comes down to the ground, there are two different processing pipelines. One, run frequently, just turns the bitstreams into Level 2 image data, with no further processing. The other, run only once a day, knows more about navigational data, and includes calibration, in particular deconvolution, producing Level 3 image data.
- The raw image pipeline is going to be run from the same process that produces Level 2 data. This is awesome because it means we're likely to get data super fast, much faster than the within-24-hours goal. However, it won't be calibrated etc.
- There is a noticeable blur to Level 2 LORRI images. It responds well to deconvolution. Amateurs may want to practice their image-sharpening skills on data from the Jupiter flyby.
- There will be a linear contrast stretch applied to the data.
- The data will be released in JPEG format.
- The team values the contributions of amateurs to public communication about the ongoing mission.
- PDS releases are scheduled for February 2016 (level 2 - uncalibrated), October 2016 (level 3 - calibrated), and March 2017 (level 5 - map products, etc). Keep in mind that while all the images will be returned by November 2015, everything except op navs will be coming down lossy-compressed; it'll be about another year after that that the entire losslessly compressed data set will be on the ground.

In the past, I've expressed concern to Alan about the automated contrast stretch during approach -- that when Pluto occupies a relatively small number of pixels, that the automated stretch could blow out all the pixels on Pluto, leaving it saturated. He's heard this concern and understands it. Saturation could very well turn out to be a problem with the first image releases but I expect the team to be responsive to dealing with that and adjusting the settings on the automated contrast stretch if it is a problem.

I asked today about metadata and Alan said that what metadata is available, how, is TBD. I'll continue to work with the mission on this to advocate for the amateur community's desires. We will have some metadata for sure -- date and time and SPICE kernels at a minimum -- I just don't know how it's going to be viewable yet. There is such a long runup with Pluto being just a few pixels across, there will be a little time to adjust things before the images get really thrilling. (Of course, it's already plenty cool to be able to see Pluto and Charon orbiting the system barycenter, and we could see that last summer).

That's it for now. I don't know of a space mission -- except maybe Juno -- that's more conscious of the role that amateurs can play in producing cool pictures for public consumption. This is going to be a fun ride smile.gif


--------------------
My blog - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
Go to the top of the page
 
+Quote Post
CryptoEngineer
post Jan 20 2015, 05:19 AM
Post #2


Junior Member
**

Group: Members
Posts: 34
Joined: 5-June 06
Member No.: 803



Thanks for you continued UMSF advocacy. I look forward to the encounter.

Go to the top of the page
 
+Quote Post
Explorer1
post Jan 20 2015, 06:14 AM
Post #3


Senior Member
****

Group: Members
Posts: 1399
Joined: 13-February 10
From: British Columbia
Member No.: 5221



Amen to that last sentence about fun rides, Emily. Nine years to the day after launch, and I still barely believe that my (and a lot of other board member names!) are still on that disc hurtling towards this rendezvous...
Still a little early for real mainstream coverage, but I won't be surprised if July turns out to be as big for UMSF's hitcount as the Curiosity landing was; its going to be nuts (in a good way)!



Edit: New PI perspective on atmospheric measurement plans.
http://pluto.jhuapl.edu/overview/piPerspec...tive_01_23_2015
Its funny that the web site design has not changed an iota in nine years; same buttons and everything. These days that's almost as astonishing as the mission itself!
If it ain't broke, after all...
Go to the top of the page
 
+Quote Post
Bjorn Jonsson
post Jan 26 2015, 11:13 PM
Post #4


IMG to PNG GOD
****

Group: Moderator
Posts: 1861
Joined: 19-February 04
From: Near fire and ice
Member No.: 38



Looks great (in fact I think "looks great" is almost an understatement!). One comment regarding metadata: To me the *exact* time (down to a second or even fraction of a second) when an image is obtained is by far the most important part of the metadata since when this is known the SPICE kernels can be used to determine a whole lot of addtional information like distance, subspacecraft point etc. if needed (i.e. if that information isn't also in the metadata).
Go to the top of the page
 
+Quote Post
jasedm
post Feb 3 2015, 08:43 PM
Post #5


Member
***

Group: Members
Posts: 599
Joined: 22-January 06
Member No.: 655



QUOTE (Explorer1 @ Jan 20 2015, 06:14 AM) *
Its funny that the web site design has not changed an iota in nine years; same buttons and everything. These days that's almost as astonishing as the mission itself!


Amazing timing Explorer- a funky new website design has appeared in recent days, no doubt in preparation for the interest generated by the upcoming flyby.

There is a huge amount to look forward to on this mission - I haven't had this level of UMSF anticipation since Cassini's Saturn orbit insertion burn.....

My only worries are a possible random safing-event at closest approach, or the discovery of detritus within the system too late to expedite one of the SHBOT options.

So cool to be invited along on this mission!
Go to the top of the page
 
+Quote Post
ngunn
post Feb 3 2015, 08:58 PM
Post #6


Senior Member
****

Group: Members
Posts: 3428
Joined: 4-November 05
From: North Wales
Member No.: 542



QUOTE (Explorer1 @ Jan 20 2015, 06:14 AM) *
http://pluto.jhuapl.edu/overview/piPerspec...tive_01_23_2015
Its funny that the web site design has not changed an iota in nine years; same buttons and everything. These days that's almost as astonishing as the mission itself!
If it ain't broke, after all...



QUOTE (jasedm @ Feb 3 2015, 08:43 PM) *
Amazing timing Explorer- a funky new website design has appeared in recent days, no doubt in preparation for the interest generated by the upcoming flyby.


Maybe it wasn't broke but it is now. Explorer1's link doesn't work any more.
Go to the top of the page
 
+Quote Post
Explorer1
post Feb 3 2015, 09:10 PM
Post #7


Senior Member
****

Group: Members
Posts: 1399
Joined: 13-February 10
From: British Columbia
Member No.: 5221



Not my fault! Everything's been redone since I posted, and it sure looks fresh....
New link to Alan's latest status here:
http://pluto.jhuapl.edu/News-Center/PI-Per...tive_01_23_2015

Also a dedicated Twitter feed alongside Alan's https://twitter.com/NASANewHorizons
Go to the top of the page
 
+Quote Post
ngunn
post Feb 3 2015, 09:28 PM
Post #8


Senior Member
****

Group: Members
Posts: 3428
Joined: 4-November 05
From: North Wales
Member No.: 542



QUOTE (Explorer1 @ Feb 3 2015, 09:10 PM) *
Not my fault!


Of course not. I was having a bit of a go at annoying system updates that don't carry over the older stuff properly. Thanks for the new link. smile.gif
Go to the top of the page
 
+Quote Post

Reply to this topicStart new topic

 



RSS Lo-Fi Version Time is now: 24th May 2017 - 09:33 PM
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.