21. Covering 380 square degrees or 0.921 % of the sky, it ranks 43rd of the 88 currently-recognized constellations in size. 22. This combination of instruments provided a field of view of 2.88 by 2.88 degrees ( 8.3 square degrees ). 23. The survey utilized 14-inch square photographic plates, covering about 6?of sky per side ( approximately 36 square degrees per plate ). 24. Each TH4 unit monitors 64 square degrees of sky at a time, so each site is capable of monitoring 128 square degrees of sky. 25. Each TH4 unit monitors 64 square degrees of sky at a time, so each site is capable of monitoring 128 square degrees of sky. 26. The LAS ( extra-Galactic ) covers an area of 4000 square degrees in YJHK to a depth of K = 18.4. 27. J-PAS will observe more than 8000 square degrees ( about 1 / 5 of the whole sky ) during 5 / 6 years. 28. ULTRASAT will observe a large patch of sky, more than 200 square degrees , alternating every six months between the southern and northern hemisphere. 29. The very large field of view of the telescope and the short exposure times enable approximately 6000 square degrees of sky to be imaged every night. 30. For comparison, both the Sun and the Moon, as seen from Earth, are 0.5 degrees across, or 0.2 square degrees .
