... This is a personal project collecting and documenting early images of Harvard College Observatory, focusing on the site at Observatory Hill (previously Summer House Hill). ... This page shows a list of all images related pictures in the same group. [link] 1849 William Cranch Bond portrait . Image Credit: Cephas Thompson . Earliest source: "William Cranch Bond." ... This is the earliest depiction I have of William Cranch Bond. ... link] 1849 William Cranch Bond portrait . ...

... The normalised fluxes of 18 stars of Table 1 for which new field determinations are presented in this paper. ... Detection of magnetic fields has been reported in several sdO and sdB stars. ... We revisit data previously published in the literature, and we present new observations to clarify the question of how common magnetic fields are in subdwarf stars. ... Here we present new FORS1 field measurements for 17 stars, 14 of which have never been observed for magnetic fields before. ...

... Unlike the previous digital-only Messages, Arecibo-1974 and Evpatoria-1999, the TAM has complex, three-section structure with different forms of information. Section 1 represents coherent sounding radio signal with slow Doppler wavelength tuning to imitate transmission from Sun's center. ... Section 2 is an analog information and represents musical melodies, performed on the Theremin. ... There were seven musical compositions in the 1st Theremin Concert for Aliens. ...

The Special Astrophysical Observatory of Russian Academy of Sciences is one of the leading center of stellar magnetism study. ... Our observatory every 3-5 years holds an International Conference "Magnetic Stars" during past 30 years. ... The conference proceedings were published in book "Stellar Magnetism", Editors-in-chief Yu.V. Glagolevskij and I.I. Romanyuk (Saint Petersburg, Nauka, 1992), 270 pages. ... Conferences . History . ... Laboratory for the Stellar Magnetism Study of SAO of the RAS . ...

... We show the analysis of low-hard and intermediate states of sources XTE J1550-564, H 1743-322, GX 339-4, XTE J1859-226, XTE J1650-500 and GRS 1915+105. ... Directly applying the scaling technique we also obtain that a ratio of the BH masses in XTE J1859-226 and in XTE J1550-564 is , and the corresponding ratio for XTE J1650-500 and XTE J1550-564 is . These values of scaling factors r implies that BH masses are ; solar masses in XTE J1859-226 and XTE J1650-500 respectively. ...

Next: One example Up: No Title Previous: No Title . Wavelets are versatile tools of harmonic analysis. Because of their many uses, the word `wavelet' comes with different connotations (and different promises) to users in different fields. ... To pursue the analogy, one may wish to select from the data some contact surfaces with specific finish tolerances. the amount of information is then reduced by selection and/or by statistical means. ...