FYI - these are some questions from the final exam of a seminar-type course
that I looked after this last Fall quarter. I thought some of you might get
a "kick" out of looking over the questions FWIW. ------------------- andy
PHOTOINSTRUMENTATION APPLICATIONS SEMINAR
OPTIONAL FINAL EXAM
01 If it is known that a subject is 10 feet away from a 35mm camera equipped
with a 22 focal length and this subject just fills the long dimension of the
film, how tall or long is the subject?
02 Normal perspective in a photograph is perceived when the observer's eye is
how far away from a contact print made with an 11x14 inch camera? (It is NOT
the film diagonal!)
03 You have a photograph made with a particular camera. What is a method or
process that one would use to make sure the new camera is in the same position
that other one was at when the photograph was taken?
04 Given a particular camera position, as lenses of various focal lengths are
placed on the camera the perspective of the recorded scene changes.
TRUE or FALSE
05 The only subjects which will record normally in a slit-scan set up are those
that...
06 Most SLR cameras are equipped with a slit-scan exposure device. What is the
name of this device?
07 Image velocity is related to subject velocity by what...?
08 What was Henri Lartigue's racecar photograph a prime example of?
09 A photograph of a moving vehicle is made with a focal plane shutter moving
from top to bottom in the camera. The original vehicle was moving from left to
right past a telephone pole. The camera was fixed to a tripod. Draw an
exagerated picture (distortion-wise) of the appearance of the vehicle and
telephone pole in the final print.
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O O
10 With a Better Light camera back the exposure time selected controls what
with respect to the movement of the linear array across the focal plane?
11 Image acquisition rate in a hand scanner is controlled by what?
12 The Earth turns how many degrees per hour?
13 Make a simple drawing of the path that the Earth describes in space as it
revolves around the Sun as it moves through space.
14 At what rate, in degrees per hour, do stars appear to move across the sky?
15 What is an equatorial mount?
16 What is a reflector telescope?
17 How long in hours is one day at the North pole?
18 Who is reputed to have said "and yet it moves" and in which context?
19 Why does the Sun appear to be higher in the sky at noon on any given day in
the Summer than in the Winter?
20 If the push-rod of a book-style Star Tracker is located closer to the hinges
than it is supposed to be but it is rotated at the correct rate, the correction
the tracker will make for the Earth9s rotation will be:
1. It will overcorrect 2. It will undercorrect (circle choice)
21 Why are book-style star tracker mounts unsuitable for tracking over extended
periods of time?
22 Equatorial mounts rotate a telescope or a camera about an axis that is
aligned with what?
23 An altazimuth mount has a single axis of rotation. How many axes of
rotation does an equatorial mount have?
24 There are two locations on Earth where an altazimuth telescope mount can be
used essentially the same way as an equatorial mount. Where is one of these
locations?
25 The rotation axis of an equatorial mount should point to a specific area of
the sky. Where is this area located?
Above is just a partial list ... provided for your amusement / information. No
need to answer the questions. There are no prizes for most correct answers.
andy
