ASTR 530 : Homework 7: Observing the Sky : 12 points


1. (3 pts). Set up and align one of the 8 inch telescopes, using the North Star and the reticle.
Use the Go-To to use three objects to align. Which three? ________________ ________________ ________________

Date: ___________ Initials of instructor: ______________

2. (1 pt). Use the 16 inch to find and slew to an astronomical object. Which: ____________________

Date: ___________ Initials of instructor: ______________

3. (4 pt) Observe at least 6 objects. Draw a sketch using the JPG
or PDF observing form (Save it and print it from a print
program, or print at 50% from your browser). Be sure to note the location, telescope used, etc.
Use a different page for each observing session, no more than 3 objects per page.
One of your objects can be the Sun (use safe techniques!)
.

4. (4 pt) Be able to point out six stars and four constellations in the sky to the labbie!
Objects correctly identified:
Stars: _____________________ __________________________ ___________________
Stars: _____________________ __________________________ ___________________
Constellations: ________________________________ _______________________________________
Constellations: ________________________________ _______________________________________

Date: ___________ Initials of instructor: ______________

Notes: Limiting magnitude: The "limiting magnitude" is the magnitude of the
dimmest star you can see with your naked eye, looking near the zenith.

Field of View: Given the Moon's size in your field of view, you can
estimate the field of view of the eyepiece by seeing how many Moons fit across the field of view.

Magnification: Equals the focal length of the objective divided by the
focal length of the eyepiece. The Focal Length of the observatory 16 inch telescope is 4 m;
of the 8 inch, 2032 mm. Eyepiece focal lengths vary from 4mm to 35mm (notice which one you used!!).

There will be at least four evening sessions, but we get clouded out a lot, so be sure to come to the first possible session you can! Or, you can go the "George Observatory" (in Brazos Bend State Park) any clear Saturday evening. (or if you have access to a telescope, get a volunteer to sign for you)

Last updated 4/11/2021