2007BaltA..16..443G

Query : 2007BaltA..16..443G

2007BaltA..16..443G - Baltic Astronomy, 16, 443-449 (2007/December-0)

On the accuracy of Galileo's observations.

GRANEY C.M.

Abstract (from CDS):

Galileo Galilei had sufficient skill as an observer and instrument builder to be able to measure the positions and apparent sizes of objects seen through his telescopes to an accuracy of 2 arcsec or better. However, Galileo had no knowledge of wave optics, so when he was measuring stellar apparent sizes he was producing very accurate measurements of diffraction artifacts and not physical bodies.

Abstract Copyright: ∼

Journal keyword(s): history of astronomy: Galileo Galilei

Simbad objects: 7

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Number of rows : 7
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 * tet01 Ori A Ae* 05 35 15.8254015008 -05 23 14.334699480 5.87 6.75 6.73 6.42 6.21 B0V 508 0
2 * tet01 Ori C SB* 05 35 16.4662967280 -05 23 22.921811880 4.20 5.15 5.13 4.91 4.73 O7Vp 1479 1
3 * tet01 Ori D Y*O 05 35 17.2574479992 -05 23 16.570738104 6.08 6.79 6.70 6.40 6.20 B1.5Vp 340 0
4 * tet02 Ori A SB* 05 35 22.9012398264 -05 24 57.832632108 5.37 6.30 6.39 6.30 6.35 O9.5IVp 576 0
5 * tet02 Ori B Y*O 05 35 26.4007537560 -05 25 00.793767576 5.36 6.29 6.38 6.29 11.050 B0.7V 206 0
6 * zet01 UMa SB* 13 23 55.5422805173 +54 55 31.295579890 2.11 2.271 2.220 2.10 2.12 A1.5Vas 320 0
7 * zet02 UMa SB* 13 23 56.3219129760 +54 55 18.513775632   4.05 3.88     kA1h(eA)mA7IV-V 188 0

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