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  • …ose that such a satellite is observed as a 2<sup>m</sup> star in the night sky. …y(24<sup>h</sup>) can we see this satellite with the naked eye (in a clear sky)?
    918字节(76个字) - 2019年9月21日 (六) 11:23
  • …perture and f-ratio of 2.5, working together to image large regions of the sky. For simplicity, we assume that the telescopes’ fields-of-view (FoV) do n …\text{source}=\sqrt{\text{Source Count}}$$ . In reality, there is also the sky background which can be important source of Poisson noise. For our purpose
    3 KB(483个字) - 2022年7月31日 (日) 06:15
  • This is the sky above Keszthely at midnight. The projected sky does not show any Solar System objects. 1.1. There are 3 novae on the projected sky at 2nd magnitude. Mark their positions by circles on the star chart. (Pleas
    2 KB(207个字) - 2019年9月2日 (一) 13:23
  • (T1.1) In a photograph of the clear sky on a Full Moon night with a sufficiently long exposure, the colour of the sky would appear blue as in daytime.
    2 KB(182个字) - 2019年9月12日 (四) 17:49
  • (c) [3 pt] On the alien’s planet, what is the angular separation in the sky between Sualocin and our Sun?
    752字节(119个字) - 2020年3月9日 (一) 21:53
  • Figure 3 is a star chart of a part of the sky on March 21, 2018. The longitude and
    641字节(64个字) - 2019年8月21日 (三) 23:05
  • We are standing somewhere on the Earth. The projected sky does not show any Solar 2.2. Determine the azimuth of the 3 brightest stars on the projected sky. Azimuth is measured
    2 KB(163个字) - 2019年9月2日 (一) 13:39
  • through the sky at 21:00 (Chinese Taipei time) on 25th September 2020. One of the
    1 KB(158个字) - 2021年6月30日 (三) 10:20
  • centrally eclipsing the Sun (see the red circle on the sky). Consequently the Moon is at 3.2. There is a yellow circle on the projected sky (next to the red circle), which denotes minor
    2 KB(223个字) - 2019年9月2日 (一) 17:09
  • 𝑓, of a star in Jansky (1 Jy = 1 × 10<sup>−26</sup> W Hz that the seeing is diffraction limited. Average surface brightness of night sky in U-band was measured to
    3 KB(289个字) - 2019年9月15日 (日) 19:11
  • …ntion. Descending on the plaza, they realize the markings are a map of the sky when the dam was built, left to indicate the date to posterity. Figure 1 is
    3 KB(449个字) - 2020年3月7日 (六) 17:44
  • on the sky. Pay attention to direction of North (see top right corner).
    2 KB(153个字) - 2019年8月25日 (日) 23:07
  • • In case of bad sky conditions at low altitudes, task 1 and 2 will be replaced by alternative…
    1 KB(127个字) - 2019年8月26日 (一) 22:30
  • Figure 1 is a whole sky star chart of Yanqing, Beijing at 20:30 tonight (UTC+8) with
    2 KB(164个字) - 2019年8月21日 (三) 22:51
  • …ge. At the moment of totality the Sun was in the South-Eastern part Of the sky, in
    2 KB(170个字) - 2019年9月19日 (四) 00:58
  • C. The '''Month''' of the observed sky above you (in “00MM” format, 0001 - 0012) In order to solve this, the sky above you is simulated from the location of the island, but with time passi
    7 KB(298个字) - 2023年11月21日 (二) 19:37
  • the CCD, if they are 20′′ apart on the sky?
    2 KB(244个字) - 2019年9月15日 (日) 12:52
  • …ose that such a satellite is observed as a 2<sup>m</sup> star in the night sky. …y(24<sup>h</sup>) can we see this satellite with the naked eye (in a clear sky)?
    9 KB(1,066个字) - 2019年9月21日 (六) 17:22
  • …ated close to the elliptical galaxy NGC 1052 (D=20Mpc from the Sun) in the sky. The shape of NGC 1052-DF2 resembles an ellipse with semi major axis (a) of
    3 KB(306个字) - 2019年8月8日 (四) 17:44
  • …earchers searched for periodic photometric variations in data from the All-Sky Automated Survey for Supernovae (ASAS-SN) that might be indicative of trans
    5 KB(784个字) - 2019年9月20日 (五) 15:18

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