Calculate the count rate for a star of magnitude V=9.5 observed with a 41 cm telescope....
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
Calculate the count rate for a star of magnitude V=9.5 observed with a 41 cm telescope. Assume an instrumental transmissivity To~0.8, a quantum detector efficiency e'~0.5 and that the transmissivity, assuming a square filter, is equal to p'=0.6. Calculate the count rate for a star of magnitude V=9.5 observed with a 41 cm telescope. Assume an instrumental transmissivity To~0.8, a quantum detector efficiency e'~0.5 and that the transmissivity, assuming a square filter, is equal to p'=0.6.
Expert Answer:
Answer rating: 100% (QA)
ANS WER The count rate is Rate To e 4 pi d 2 q t Where To Instrument al t... View the full answer
Related Book For
Posted Date:
Students also viewed these accounting questions
-
Solve the D value of the process using SMC and HSK given an initial microbial load of 1.65x10^6 cfu/ml U(min) n r 2 0 1 24 4 68 10 12 14 16 99 6 6 6 6 6 6 30 points 23 3 5 6 6
-
Attached are two data sets, one concerning Skittles and one about cereals. You may assume both samples provided were selected randomly and are representative of the population. Be sure to use the...
-
A telescope is limited in its usefulness by the brightness of the star that it is aimed at and by the diameter of its lens. One measure of a star's brightness is its magnitude; the dimmer the star,...
-
Soft Glow, Inc. manufactures light bulbs. Their purchasing policy requires that the purchasing agents place each quarter's purchasing requirements out for bid. This is because the Purchasing...
-
Dan Beene, chief financial officer of Tampa Wireless, is responsible for the companys budgeting process. Beenes staff is preparing the Tampa cash budget for 2015. A key input to the budgeting process...
-
Explain the purpose of a capital expenditure budget.
-
At critical state the compressibility factor for a van der Waals gas is (a) 0.75 (b) 0.5 (c) 0.375 (d) 1.0 .
-
Macon Controls produces three different types of control units used to protect industrial equipment from overheating. a. How many machines are required to meet minimum (Pessimistic) demand, expected...
-
Build an erd diagram showing the appropriate relationships for the entities team, coach, player, stats, awards, and all star games.
-
Tony and Suzie graduate from college in May 2024 and begin developing their new business. They begin by offering clinics for basic outdoor activities such as mountain biking or kayaking. Upon...
-
i. Consider an economy with the following components in GDP. Consumption depends only on disposable income. National saving is 225, investment is given by I = 400 25r, where r is the real interest...
-
You have been told that a spherical cell is about 0.52 micrometers in diameter. How many nanometers would this be? Only put the number in your answer and NO units or any other information!
-
Smith buys a $250,000 house. She makes a $50,000 payment immediately and borrows $200,000 from the bank. The bank charges interest at the rate of 1% per month, compounded monthly. Smith makes level...
-
A government bond is issued on jan 1 2 0 2 0 , with a par value of 1 0 0 TL and maturity of 7 years.The coupon interest rate is % 1 6 . However,bond pays coupons semi - annually at the end of...
-
If an investor put away $ 3 0 0 0 at age 2 3 rather than age 3 1 , how much money would he or she have at age 6 3 , assuming a 9 percent compound rate of return?
-
A small start-up biotech firm anticipates (8)that it will have cash outflows of $230,000 per year at the end of the next 3 years. Then the firm expects a positive cash flow of $50,000 at the end of...
-
A company has experienced the following changes in sales, labor, and capital. Calculate the total productivity percentage improvement from year 1 to year 2. Does the total productivity measure make...
-
Identify one local business that uses a perpetual inventory system and another that uses a periodic system. Interview an individual in each organization who is familiar with the inventory system and...
-
True or False. The product of two negative real numbers is always greater than zero.
-
In problem, solve each inequality. 6(x 2 - 1) > 5x
-
Identify each conic without completing the square or rotating axes. 2x 2 + 5xy + 3y 2 + 3x 7 = 0
-
A company with a price-earnings ratio of 14 has an earnings yield closest to: A. 7.14% B. 14.00% C. 92.86%
-
The role of the 8-K filing with the Securities and Exchange Commission is best described as to disclose: A. the annual report. B. executive compensation. C. holdings of beneficial owners.
-
Which of the following is not produced by a company to communicate its financial results? A. Schedule 13D. B. Annual report. C. 10-K statement.
Study smarter with the SolutionInn App