Astronomy C

[quizbowl]

i would be very interested. does anyone know the specific formula's and their explanations for astronomy? thank you....

This formula/constant sheet is a good start formula-wise.

[Infinity Flat]

i would be very interested. does anyone know the specific formula's and their explanations for astronomy? thank you....

This formula/constant sheet is a good start formula-wise.

Captain, my captain, your hyperlink has failed!

[rfscoach]

i would be very interested. does anyone know the specific formula's and their explanations for astronomy? thank you....

This formula/constant sheet is a good start formula-wise.

Captain, my captain, your hyperlink has failed!

Works fine for me.

[Infinity Flat]

This formula/constant sheet is a good start formula-wise.

Captain, my captain, your hyperlink has failed!

Works fine for me.

Hmm, works for me now too. Odd.

[EastStroudsburg13]

My school hasn't been very strong over the past years at the event, and I might decide to try it this year, so does anyone have any advice, such as textbooks, study materials?

I know Infinity Flat mentioned a book somewhere in this thread. Other than that, looking up everything in the rules on the Internet should give you a good basis. You can start off with the Astronomy Wiki.

And also, if you have participated in this event, what aspect makes it difficult? Just the subject in general, a broad scope of testable material, or something else? Any feedback can help. Thank You!

Yes to everything in there pretty much. It's very broad, and there are so mnay things that can be tested on. This also depends on the event supervisor.

[Schrodingerscat]

Does anyone else agree with me on the following question:

What can parallax be used to calculate be used to calculate?
a. The composition off [sic] stars based on the spectra of their starlight
b. the temperature on the surface of a star within 1,000 light-years of Earth
c. the distance of a star within 1,000 light-years of Earth
d. the distance to stars that are extremely far away

We answered C because 1000ly is about the limit of parallax detection. However, the answer for the test was D. To me in astronomy, "extremely far" implies millions if not billions of light years, which is well beyond the limits of stellar parallax. Does anyone else have any thoughts on why D might be a valid answer over C?

[rfscoach]

Does anyone else agree with me on the following question:

What can parallax be used to calculate be used to calculate?
a. The composition off [sic] stars based on the spectra of their starlight
b. the temperature on the surface of a star within 1,000 light-years of Earth
c. the distance of a star within 1,000 light-years of Earth
d. the distance to stars that are extremely far away

We answered C because 1000ly is about the limit of parallax detection. However, the answer for the test was D. To me in astronomy, "extremely far" implies millions if not billions of light years, which is well beyond the limits of stellar parallax. Does anyone else have any thoughts on why D might be a valid answer over C?

The answer key was wrong. It happens ya know. I made a test for a Div C invite last weekend and thought I double checked my key, but when I was going over 1 of the exercises with my Div B kids on Monday I found a stupid mistake on a 5 point question. Embarrassing.

[Schrodingerscat]

I was pretty sure that it was an incorrect answer, but I was just checking with others to confirm it.

[emmamcgorray]

Does anybody know what DSOs specifically are going to be tested? I know that last year there was a list given of which DSOs were going to be emphasized. Is the list the same this year, or is it just not out yet?

[AlphaTauri]

Yeah, the DSO list is out with the rules. It's way different from last year, so you'll want to take a good look at the rules before starting to study.

Also, I can verify that the answer to that question a couple posts back should be C not D. Parallax only works up until the star is too far for us to measure any significant angle (~1000 LY).