**Decision Making**

**PUBLIC FORUM ROLE SHEET**

**Vice President, Space Video, Inc.**

Space Video, Inc. seeks to fund the purchase, installation, and
operation of an additional camera(s) on the Deep Impact spacecraft to
enable full coverage of the Deep Impact mission. The image enhancements
are outlined below.

-   Add up to four small cameras to the flyby spacecraft. Cameras could
    relay images of the:

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-   Impactor as it moves away from flyby to determine release velocity.

-   Comet nucleus during approach.

-   Dust shields to show images of dust impacts.

-   High Gain Antenna (HGA) gimbal to show antenna pointing.

-   Solar arrays to show proper functioning to provide power to
    spacecraft.

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-   Add up to two similar cameras to the impactor. Cameras could relay
    images of:

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-   Flyby as the impactor moves away to determine release velocity.

-   Dust shields to show images of dust impacts.

As a partner in this small corporation, you have a great desire to
obtain funding for this project because:

1.  Working with NASA will move Space Video, Inc. ahead of its
    competitors.

2.  You have just purchased all the equipment needed to support this
    project.

3.  You have always been a space enthusiast and volunteer at your local
    planetarium.

The flyby cameras take up to 1 kg (2 lbs) from mass margin. In addition,
Space Video, Inc. will be provided special access to mission team
members and to mission information to aid in the production of Space
Video, Inc. television and online programming.

**Mission Scientists**

As a mission scientist, meeting the science objectives of the mission is
your top priority. These include meeting the following goals.

1.  Hitting the nucleus of a comet with sufficient kinetic energy to
    form a crater with a depth greater than 20 meters.

2.  Observing the nucleus for more than 10 minutes following impact.

3.  Recording images of the nucleus impact, crater development, and the
    interior of the crater.

4.  Obtaining spectrometry of the nucleus and interior of the crater.
    (***Spectrometry** provides measurements of energy that enable
    scientists to analyze the structure and composition of objects.)*

5.  Acquiring, storing, formatting, and down linking the imagery and
    spectrometry data.

You have been interested in comets all of your life, and you see this
mission as the best opportunity to make new discoveries about the inside
of a comet. You consistently avail yourself of all of the options for
obtaining data. You realize that much of the funding for this mission
involves the use of onboard instruments that will take pictures of the
impact and send these images to the Earth.

The scientists are divided on the matter of putting an additional
camera(s) on the spacecraft. Some see the value in getting visual images
of the spacecraft, while others do not see the scientific value of these
images. Some scientists see the additional camera(s) as being a backup
to the science cameras, even though the additional camera(s) would not
be calibrated and tested for use in the science. The low-resolution
video images of the nucleus enable creation of a better
three-dimensional model of the nucleus. Other scientists believe that
adding an additional camera(s) would increase the risk of the mission.

**Mission Engineer**

You have worked on many space science missions in the past 20 years. You
understand that it is critical to meet the science objectives for this
mission. You have managed the design and construction of the spacecraft
and most of the science instruments. Knowing the capabilities of the
instruments, you question whether placing an additional camera(s) on
board the spacecraft justifies the increase of mass to the spacecraft.
You are confident that the onboard instruments are the best possible for
imaging the impact of the comet. You prefer to simply do everything
possible to ensure a successful mission. Most of the engineers see the
value of an additional camera(s), as it would verify the release
impactor as it leaves the Deep Impact spacecraft. It would provide
information during the release of the impactor, which would provide
information whether things go right or wrong. However, there is some
concern regarding sufficient light to view the spacecraft. Most of the
engineers are interested in where this additional camera(s) would reside
on the spacecraft.

# Space Agency Administrator 

You have been a strong advocate for this mission over the years. You
personally know the principal investigator and many of the people on the
science team. Your interest is that the mission is as successful as
possible while maintaining fiscal responsibility (i.e., working within
the limits of a reasonable financial budget). You have overseen past
missions in which the spacecraft builder provided instruments that
enabled success. During a recent review, you gave the science team high
marks for the comprehensive study of the comet by Earth-based
observatories that have occurred thus far and will continue throughout
the launch of the mission.

**Astronomer**

You have been observing far-away objects in our solar system for the
last 30 years. You were the co-discoverer of several Kuiper Belt objects
during your time at a major observatory. You feel that the images from
an additional camera(s) might be beneficial in order to see the impact
in "stereo," even though the additional camera(s) would not be
calibrated to provide good science information. You hope to use the
images to confirm your theories of the composition of comets, which will
give us a better picture of the origin of our solar system. You are
opposed to light pollution, which may be caused by people who use
lighting fixtures that cause the light to shine into the sky. Light
pollution makes it difficult for amateur astronomers to see objects in
the nighttime sky. You are interested in working with amateur
astronomers in getting images of the impact from the Deep Impact and
future comet missions.

**Education and Public Outreach Manager**

As an education and public outreach manager, your job is to provide
educators and the general public with information and educational
materials about the Deep Impact mission. Your goal is to increase public
interest in space science as well as increase student awareness of
space-related careers. You see the decision being made in the mission
planning as a great example of the processes people need to make in
their everyday lives. You are strongly in favor of getting additional
images of the spacecraft. These images could be used in conjunction with
planned educational activities that would be interesting to many people
who are following the mission.

-   An additional camera(s) could provide the public with a number of
    new images of space.

##### First-ever imaging sequence showing spacecraft separation in deep space.

-   First-ever images of actual dust hits damaging the spacecraft dust
    shields.

-   First-ever imaging sequences of hardware deployment and
    communication in deep space.

**Write your own roles here.**