Our cycle of twittering (”HiTwycle“) is now over – the last image is on the ground, validated, processed, and will soon be released. (We release data in 100-orbit increments, which don’t necessarily fall along cycle boundaries, so the first half of cycle 89 will be released in May and the second half in June.)

It was fun to share some of the behind-the-scenes details with our followers! I thought it was pretty funny when Nick or I were too lazy to walk over to each others’ offices to ask a question, and asked each other over twitter instead. ha! I guess those questions probably give you a feel for the nitty-gritty of planning a cycle, anyway. I hope it was interesting! If you have any questions, feel free to ask them in the comments.

If you missed it and want to read through the saga, I made an archive of tweets with the #hitwycle hashtag. (I didn’t start this until part-way through, though, so unfortunately the first few days of tweets are missing. Soon you can check the Library of Congress for them! ) You can see the whole archive here:

http://www.twapperkeeper.com/hashtag/hitwycle

Some of my favorites are below.
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Follow along! We’re in the midst of twittering an entire planning cycle, start to finish. Right now we’re in what’s called “IO week 1″, the second week of a 5-week planning process. You can follow the hashtag #hitwycle to see all the updates in real time.

This blog entry describes it in much more detail, from when we tried to do this last fall. Unfortunately, that time the spacecraft went into safe mode, and we had to stop the experiment. Here’s hoping for better luck this time! :\

Cast of characters:

CIPP (Co-I of the Pay Period, science team member who prioritizes and helps plan the images from a scientific point of view): @nick_space

HiTS (HiRISE Targeting Specialist, operations team member who plans the images from a technical point of view): @laughingrid

Cycle Coordinator (person at JPL who combines and deconflicts all the targets from the different MRO instruments): @milkysa

One difference is that this time the CIPP (@nick_space) is here in Tucson. So it’s pretty easy to walk over to his office and ask him a question. Despite that, we’ve actually had a few discussions over twitter instead. Talk about lazy!! The good side of that is that you get to follow the day-to-day planning and see what it’s really like to plan two weeks of HiRISE images!

Links:

HiTwycle – HiRISE Twitters a Planning Cycle

HiTwycle on twitter

Originally posted at Spaced Out (Again):

We are going to try to Twitter a planning cycle for the HiRISE (http://hirise.lpl.arizona.edu) experiment. The idea is to give people a feeling of all the work we have to do to get images from Mars out of a very special piece of equipment. Here are a couple of things you need to know to follow what is going on.

The scientist in charge of the scientific support for the cycle is called the CIPP. For cycle 75, that is @nick_space. Nick will be assisted by his Post-Doc., Anya, who is @mozhetbyt

The targeting specialist ensures that the plan produced can be implemented and keeps the CIPP from doing anything stupid. The targeting specialist is called the HiTS and for cycle 75 that is @laughingrid.

The HiRISE project has its own Twitter account (@HiRISE) which can also be followed.
We will try to use #hitwycle as a search hashtag for tweets.

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If you live in Tucson, you might be interested to know that we’re looking for a new HiRISE Targeting Specialist (HiTS) here at HiROC!

Our faithful blog readers are probably already familiar with some of what the HiTS do, but for the rest of you, here are some past entries related to different aspects of the job:

• Welcome, Newbies! – Training other new HiTS
• ESP so far – In the extended mission, things are (supposedly!) easier…
• How big are our feet? – Planning software HiTS use, HiPlan
• High data rate and HiTemp – Some of the challenges of planning images
• Looking Back – Special sequence commanding

I’ve found it to be an exciting and rewarding job, but it’s not an easy one. You need to be the type of person who thrives under pressure; can deal with firm deadlines, but is also creative and self-motivated in between deadlines; pays attention to small details, but can also “see the big picture” (so to speak ). You need to be able to communicate with, and translate between, people with diverse backgrounds and experience, from researchers on the science team to NASA engineers. Ideally, you’d have some relevant scientific background (planetary science, astronomy, or geology, for example), be familiar with UNIX and some programming, and most importantly, be excited about exploring Mars!

To view the complete job description, requirements, and apply online, click this link to the University of Arizona job listing. If you have any questions about the job, please leave them in the comments below!

The first few cycles of the extended science phase (ESP) have been very similar to the previous primary science phase (PSP). The main difference has been that the Observation IDs start with ESP instead of PSP! (like ESP_011268_2485) We’re also adding some warm-up observations on the night side of the planet now, which is adding some extra work in the planning. Luckily (?), Mars is at its farthest distance from the Earth right now, so the data rate is very low. This means fewer images to plan, so we have some extra time to do special things like this.

The next cycle, however, will mark some changes in the way we do the planning process. This is cycle 58 (can you believe it’s been that many cycles since we started??). For most of that time, we’ve been doing things in much the same way. We’ve gotten so good at it that everyone decided they wanted to change everything & mess it all up. haha, just kidding. We’re actually trying to simplify things. Even though we’ve gotten pretty good at this, it’s still an incredibly complex process. We would like to continue doing it for a long time and still remain sane. Also, we expect that our funding will be cut in the future, and we want to make sure we can still do everything even if we have fewer people. Plus, things just wouldn’t feel right if we weren’t constantly changing something!

If you’re interested in the nitty-gritty details, here are some of the things we’re changing: (more…)

Now that all the Phoenix landing excitement has calmed down, we can return to regular old day-to-day operations…. One of those is stereo imaging. (For day-to-day Phoenix operations, check out their website!)

On the main HiRISE site, we’ve posted a list of all the stereo pairs we’ve acquired & released. There are 467 of them! Now you can look up whether your favorite image is part of a stereo pair or not. (I don’t think the list is searchable yet, but it’s sorted by the observation ID of the first half.) There is also a PDF document on the page (click here to download directly) with more information about our stereo images. It includes instructions for using these stereo pairs to make your own red-blue anaglyphs (the ones you view with the 1950s 3-D glasses). To the right is one of those anaglyphs. This is part of a delta in Eberswalde Crater from the image PSP_001534_1560, linked on that page. (Search our catalog for ‘anaglyph’ to see even more.)

Wondering how we get stereo imaging? (more…)

Lately we’ve been working hard dealing with a LOT of extra data. Because Mars is getting closer to the Earth (you can visualize that in this view of the solar system), we are approaching the peak data rate for the entire primary mission. Not that we’re complaining! This just means the Targeting Specialists are planning many more images, and we’re making those images as big as we can.

Unfortunately, we can’t just make them all the largest size the instrument is capable of taking, because our camera will get too hot. If it overheats, the instrument will shut itself off in order to prevent any damage to the electronics. So we have to be careful, and only plan images that won’t overheat HiRISE. In order to predict those temperatures, we use a tool called HiTemp (of course!). Here’s what it looks like (click on the image to see a bigger version).

This program reads in our planning files, and then models the temperatures of two key spots on the focal plane of the camera. It’s our job to make sure we don’t go above the dotted red line – this gives us a comfortable buffer below the scary solid red line. That’s when HiRISE would shut off, or safe. We know from experience by now that this is a big pain in the neck – a lot of work is required to get us back up & running, and we miss observations while we’re turned off. So we watch our HiTemp plots!

Yesterday morning we turned the MRO spacecraft around to see our point of origin – the Earth. We took a special calibration image of the Earth and Moon. HiRISE isn’t the first to take a picture of the Earth from Mars, but we’re hoping ours will be even more detailed. We expect the Earth to be about 90 pixels across its diameter, and the Moon about 24 pixels. So it won’t be a big beautiful clear image like you’re used to looking at from our weekly releases, but we should be able to resolve features like continents!

This diagram simulates of what the inner solar system would look like if it were being viewed from above right now. MRO is looking from Mars (orange) towards Earth (purple). You can see from this geometry that we’ll only see the sunlit part of the Earth and Moon as a crescent. They’ll look somewhat less than half full.

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Mars is currently blanketed by a large dust storm. We first starting seeing it in late June. The MARCI instrument returns global daily mosaics of the planet, which we use like a weather report. These showed several dusty areas, and we had some hopes they would remain merely “regional.” However, in the following days, the storm activity increased, and winds blew the dust around the planet. Most of our images started coming back clouded over with dust. Some are just hazy, and some are completely obscured. Our Principal Investigator, Alfred McEwen, recently pointed out that this dust storm currently active in the Saharan desert on Earth looks very familiar!

At this point, the storm is considered a “hemispherical event,” meaning it’s mainly affecting “only” half of the planet (the southern hemisphere, in this case). We have our fingers crossed that this will not expand and become a global event like the 2001 dust storm.

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We’re just finishing up four days of having the whole HiRISE team visiting us here in Tucson. It’s been a great team meeting! We had updates on operations, and heard a lot about science results from HiRISE images. Some CRISM and THEMIS team members participated, too, so we got to see what other teams are doing and talk about collaborating and using multiple data sets. People are doing really exciting things with HiRISE data!

Also, our team is really growing!

You’ll notice a lot of new faces compared to a few years ago!

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