Physics & Astronomy – Astronomy Laboratory

 

 

Order Number			45471455714
Type of Paper			Essay
Writer Classification Level			Undergraduate
Style of Writing			MLA/APA/CHICAGO/
Sources and References			5
Number of Pages			4
Paper Instructions Astronomical Images   28 September – 4 October http://prancer.physics.louisville.edu/moodle/course/view.php?id=12   Question 1 What are the x and y coordinates of the red star that is close to the center of the Tarantula? To identify the star by color, first select “RGB mode” from the color menu, load each image and assign “red” to the “R”, “green” to “G”, and “blue” to “B”.   As the online lab says, Use the linear scaling for all images.  Adjust with the mouse on each one to balance the colors, make the background black, the bright stars white, and bring out some of the nebula. Use the “Scale” menu, select “Scale controls” at the bottom and that will bring up a panel telling you what the range of the data is from that image and letting you select what part of it to show.  For each of the R, G, and B set this for 0 to 2000 initially.  Then by looking at the color image on the display, adjust each one until it has  balanced look and is not all red.  When you get it right, one of the stars will stand out as unusually red compared to the others.   Pick the answer closest to what you found. x=429, y=521 x=490, y-465 x=675, y=574 x=340, y=460 x=749, y=665       Question 2 There are also some other somewhat fainter red stars off center that you may need to use the panner to find. Where are they? Close to x=398, y=394 In the very center. Upper right when the nebula is centered. Close to x=382, y=920 On the far left.           Question 3 The images are shown with the astronomical convention that north is up and west is to the right. Why is that sensible? This is how the sky looks to an observer in either  hemisphere.  Face north to the pole star,  for stars above the horizon and Earth’s north will be “up” and  Earth’s west to your right. This is how the sky looks to an observer in either hemisphere.  First face south, then look up from the horizon and Earth’s north will be “up” and behind you with Earth’s west to your right. It is the same orientation that is conventional  for maps of the Earth’s surface. This is how the sky would look to someone viewing it though an astronomical telescope that inverts images.     Question 4 What are the coordinates of the star that stands out as bright red now? Choose the answer that is closest to what you found. 552,474 427,521 677,574 491,465     Question 5 What do you notice about how the image of the stars and the Tarantula nebula differ when you use the infrared “I” filter compared to  using one of the others? It makes the red stars redder and easier to see, but the nebula is not so obvious. The stars that had been bright in R are no longer visible. The nebula disappears and is no longer visible. The stars are unchanged. I could not get the stars to show up at all.     Question 6 What color is the emitted by this gas? Mostly red Blue Green I don’t see any nebula.     Question 7 Look for the very bright white star below the nebula. Identify this star by name and location. Rigel or beta Orionis Betelgeuse or alpha Orionis Nair or Hatysa, also known as iota Orionis Theta Orionis     Question 8 Just north of M42, the bright part of the Orion Nebula, there is a fainter nebula surrounding some stars. What is the NGC number of the nebula centered approximately on RA 05:25:15 Declination -04:53:12? NGC 1977 M42 IC434 NGC 2024       Question 9 On our image, setting zoom at 2, use the “scale” to see faint parts of the nebula.  You may need to click on “View” and select “Panner” too in order to explore and center the nebula.   How many minutes of arc from top to bottom is the angle in the sky covered by the Orion nebula’s fainter extended gas and dust? Convert that to degrees too by dividing by 60. Compare it to the full Moon, which is nearly 0.5 degrees across. 30 arcminutes, 0.5 degrees, about the size of the Moon 5 degrees, 10 times the size of the Moon 0.05 degrees, just 3 arcminutes, and only 1/10th the apparent size of the Moon I’m stuck. How do I tell the minutes of arc?       Question 10 From top to bottom, how large an angle on the sky does this image of Orion cover? 0.5 degrees 1 degree About 2.5 degrees 5 degrees
	Distinguished (100%)	Proficient (85%)		Basic (70%)	Below Expectations (50%)	Non-Performance (0%)
Thesis Statement	Raises the strongest   objection to the thesis presented in the assignment. The objection is strongly grounded in research and logical reasoning.	Raises a plausible objection to the thesis presented in the assignment. The objection is mostly grounded in research and logical reasoning.		Raises an objection to the thesis presented in the assignment. The objection is somewhat grounded in research and logical reasoning.	Attempts to raise an objection to the thesis presented in the assignment. The objection is minimally grounded in research and logical reasoning.	The objection to the thesis is either nonexistent or lacks the components described in the assignment instructions.
Counter Argument	Provides a strong, thorough rebuttal to the objection. The rebuttal effectively demonstrates that the thesis can withstand the objection and applies the principles of charity and accuracy.	Provides a rebuttal to the objection. The rebuttal mostly demonstrates that the thesis can withstand the objection and mostly applies the principles of charity and accuracy.		Provides a limited rebuttal to the objection. The rebuttal somewhat demonstrates that the thesis can withstand the objection and somewhat applies the principles of charity and accuracy.	Attempts to provide a rebuttal to the objection; however, the rebuttal minimally demonstrates that the thesis can withstand the objection and does not apply the principles of charity and accuracy.	The rebuttal is either nonexistent or lacks the components described in the assignment instructions.
Conclusion	Provides clear and concise closing remarks that comprehensively summarize the essay. The remarks consider the broader controversy and/or further research that could offer additional insight into the moral solution of the business problem.	Provides closing remarks that summarize the essay. The remarks mostly consider the broader controversy and/or further research that could offer additional insight into the moral solution of the business problem. The closing remarks are somewhat unclear.		Provides closing remarks that minimally summarizes the essay. The remarks minimally consider the broader controversy and/or further research that could offer additional insight into the moral solution of the business problems. The closing remarks are unclear and/or vague.	Attempts to provide closing remarks that summarize the essay; however, the remarks do not consider the broader controversy and/or further research that could offer additional insight into the moral solution of the business problem. The closing remarks are unclear and vague.	The closing remarks are either nonexistent or lack the components described in the assignment instructions.
Written Communication: Context of and Purpose for Writing	Demonstrates methodical application of organization and presentation of content. The purpose of the writing is evident and easy to understand. Summaries, quotes, and/or paraphrases fit naturally into the sentences and paragraphs. Paper flows smoothly.	Demonstrates sufficient application of organization and presentation of content. The purpose of the writing is, for the most part, clear and easy to understand. There are some problems with the blending of summaries, paraphrases, and quotes. Paper flows somewhat smoothly.		Demonstrates a limited understanding of organization and presentation of content in written work. The purpose of the writing is somewhat evident but may not be integrated throughout the assignment. There are many problems with the blending of summaries, paraphrases, and quotes. Paper does not flow smoothly in all sections.	Organization and presentation of content are extremely limited. The purpose of the writing is unclear. There is little or no blending of summaries, paraphrases, and quotes. Paper does not flow smoothly when read.	The assignment is either nonexistent or lacks the components described in the instructions.
Written Communication: Control of Syntax and Mechanics	– Displays meticulous comprehension and organization of syntax and mechanics, such as spelling and grammar. Written work contains no errors and is very easy to understand.	Displays comprehension and organization of syntax and mechanics, such as spelling and grammar. Written work contains only a few minor errors and is mostly easy to understand		Displays basic comprehension of syntax and mechanics, such as spelling and grammar. Written work contains a few errors which may slightly distract the reader.	Fails to display basic comprehension of syntax or mechanics, such as spelling and grammar. Written work contains major errors which distract the reader.	The assignment is either nonexistent or lacks the components described in the instructions.
Written Communication: Required Formatting	Accurately uses required formatting consistently throughout the paper, title page, and reference page.	Exhibits required formatting throughout the paper. However, layout contains a few minor errors.		Exhibits limited knowledge of required formatting throughout the paper. However, layout does not meet all requirements.	Fails to exhibit basic knowledge of required formatting. There are frequent errors, making the layout difficult to distinguish as required style.	The assignment is either nonexistent or lacks the components described in the instructions.
Written Communication: Word Requirement	The length of the paper is equivalent to the required number of words.	The length of the paper is nearly equivalent to the required number of words.		The length of the paper is equivalent to at least three quarters of the required number of words.	The length of the paper is equivalent to at least one half of the required number of words.	The assignment is either nonexistent or lacks the components described in the instructions.
Written Communication: Resource Requirement	Uses more than the required number of scholarly sources, providing compelling evidence to support ideas. All sources on the reference page are used and cited correctly within the body of the assignment.	Uses the required number of scholarly sources to support ideas. All sources on the reference page are used and cited correctly within the body of the assignment.		Uses less than the required number of sources to support ideas. Some sources may not be scholarly. Most sources on the reference page are used within the body of the assignment. Citations may not be formatted correctly.	Uses an inadequate number of sources that provide little or no support for ideas. Sources used may not be scholarly. Most sources on the reference page are not used within the body of the assignment. Citations are not formatted correctly.	The assignment is either nonexistent or lacks the components described in the instructions.