Lab6OpticsandSimpleTelescopesActivity202005
docx
keyboard_arrow_up
School
Florida State College at Jacksonville *
*We aren’t endorsed by this school
Course
1002
Subject
Astronomy
Date
Dec 6, 2023
Type
docx
Pages
4
Uploaded by ElderFlowerDragonfly39
Optics and Simple Telescopes Exercise
For the lab, you will need the following items
in your Astronomy Lab supplies kit. This
includes the following:
•
Convex lens
•
Convex mirror
•
Concave mirror
•
Simple Telescope
Using the Convex lens and the Convex and Concave mirrors, complete the following Data
Table.
Optic
Describe the appearance of the
lens or mirror
What does objects look like:
•
Through the convex lens?
•
When reflected by the mirrors?
Convex lens
The lense is small
Very clear
Convex mirror
Just a normal silver spoon
The objects look like they have been
zoomed in on
Concave mirror
A normal silver spoon
It makes the objects longer and upside
down
What type of image did you see with the convex lens?
It magnified everything on the lens
What differences did you find between the two mirror shapes in what you saw?
the concave mirror flipped the images and the convex did not
Which lens and mirror shapes produced the same shapes?
They both produce the same shapes
Figure 1: The optical and assembly design of the simple telescope. ["Refracting Telescope" by Florida State College at
Jacksonville is licensed under CC BY 4.0]
The optical and assembly design of the simple telescope.
Using the Simple Refracting Telescope
– Put the simple refracting telescope to use,
looking through the foam eyepiece end. To focus you push-pull the sliding cardboard
tube assembly. First use the telescope on a bright and easy-to-identify object in the lab.
Take your time and practice focusing the telescope. A distant object is easier to focus
than a nearby object. Likewise using the simple telescope during the daytime is initially
easier than at nighttime.
WARNING: DO NOT LOOK AT THE SUN UNDER ANY CIRCUMSTANCES.
•
Take the narrower eyepiece assembly off of the telescope. What do you see through the
telescope without the eyepiece? Look through the end where the eyepiece is supposed to be
placed, not the objective end.
The objects are pretty blurry
•
Now put the eyepiece back onto the telescope. Once the telescope is focused, describe the
image you see through the telescope. Is it right-side up? (Note: again, many have better
success first using the telescope outdoors.)
Everything looks normal
•
Taking the telescope outside, look at
four
different objects some distance away. List the object,
what you can see of the object without the telescope, and what you can see with the telescope.
Have some patience as you focus the telescope.
Object #1:Cat
Describe how Object #1 appears to your naked eye:
Overweight, white and grey cat
Describe how Object #1 appears through the telescope
Still clearly chunky
Object #2:A person
Describe how Object #2 appears to your naked eye:
My fiances face with green eyes and blonde hair
Describe how Object #2 appears through the telescope
Through the telescope its maginified her face quite a bit
Object #3: shaker cup
Describe how Object #3 appears to your naked eye:
A shaker bottle that is black with a white lid
Describe how Object #3 appears through the telescope
The shaker bottle looks much larger
Object #4: Dog
Describe how Object #4 appears to your naked eye:
Black with white spots, small, chunky
Describe how Object #4 appears through the telescope
Somehow even chunkier
•
One of the characteristics of the telescope is that it magnifies objects. Estimate the
magnification or power of this simple refracting telescope:
___3.5___X
How did you arrive at this estimate?
I used my phones camera to zoom in and picked a power that was similar to what I was seeing
•
Focus on a nearby object. Note where the two sliding tubes come together. Now focus on an
object further away (you might need to be outside), again noting where the two sliding tubes
are, position-wise. How do these two positions compare?
One of these objects looks much bigger than the other
•
After using this simple refracting telescope, what would be some of the challenges using this
telescope for:
•
Terrestrial (Earth-based) viewing?
It's hard to get a clear image
•
Astronomical Observing?
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
- Access to all documents
- Unlimited textbook solutions
- 24/7 expert homework help
You wouldnt be able to see anything that distance
(1) Content by Florida State College at Jacksonville
is licensed under
a
Creative Commons Attribution 4.0 International License