... Contacting and discussing with people sharing your interests, participating in night sky observations with telescopes as well as a large choice of astronomical books, magazines and video-tapes out of our club library. ... A reasonable compromise for observing both planets and brightest deep sky objects ( nebulae, galaxies) are either a 4 to 8 inch mirror telescope ( Newton, Schmidt-Cassegrain ) or a 3 to 4 inch refracting ( lens) telescope. ... Where can I buy a telescope in Luxembourg ? ...

... Since GCVS IV, there was no new GCVS edition. ... Main reasons for the automatic-survey new variables remaining outside the GCVS for a long time:  different level of detail of the classification systems, no perfect software for automatic classification available;  individual approach to each star that was always used in the GCVS cannot be applied any longer, but the experience of automatically- updated catalogs evidences for the number of errors ...

Crater Gassendi . ... I made this drawing was made on the 26th of november 2001. If you compare this one with the previous drawing of Gassendi (below) the differences are clear. ... This drawing was made on the 28th of september 2001. After nearly a full month without observations I had a one hour gap between the thicker clouds. ... This drawing was made on the 29th of august 2001. ... This drawing was made on the 27th of august 2001. ... This drawing was made on the 25th of august 2001. ...

The new view on the population of Galactic open clusters A.E.Piskunov1, N.V.Kharchenko2, S.RЖser3, E.Schilbach3, R.-D.Scholz4 1 2 3 4 Institute of Astronomy, Moscow, Russia Main Astronomical ... Observatory, Kiev, Ukraine Astronomisches Rechen-Institut, Heidelberg, Germany Astrophysikalisches Institut Potsdam, Germany What are open clusters and what do they teach us Groups of Population I ... Cluster complexes: OCC-1 = Gould's Belt cluster complex? ...

... Yerga Expedition . ... Novaya Yerga Expedition . ... I n 1662 a meteorite shower fell near the village of Novaya Yerga. ... In 2002, the Meteoritics Laboratory of the Vernadsky Institute of Geochemistry And Analytical Chemistry of the Russian Academy of Sciences (GEOKHI) organized an expedition to search for the location and any traces of the Novaya Yerga meteorite shower. ... After visiting the town of Kirillov, the expedition returned to Novaya Yerga, i.e. to near the village of Nekrasovo. ...

... Maps of six sources (0420+022, 0420-014, 1308+326, 1345+125, 1803+784, and DA 193) obtained with milliarcsecond resolution are presented and discussed, together with their broadband (1­22 GHz) spectra obtained on the RATAN­600 radio telescope at epochs close to those of the VLBI observations. ... The image (Fig. 5) shows that the source structure at 18 cm is compact, consisting of a VLBI core and two jet components, with the outer component lying 5 mas (30 pc) to the northwest of the core ( = 54 ). ...

... Average effective wavelengths and band widths for various sp ectra Lyrae spectrum f flat k е 1014 Hz 5386 ± 18 4.66 ± 0.04 5714 ± 12 4.1 6234.5 ± 0.5 1.03 5372 ± 18 4.69 ± 0.04 eff 2 Optical Filter ID 1 2 3 4 a Fo c -6 10 erg/cm2 s 12.55 ± 0.10 11.04 ± 0.01 2.77 ± 0.004 12.63 ± 0.10 fo d 6 10 photons/cm2 s 3.40 ± 0.02 3.18 ± 0.004 0.87 ± 0.002 3.42 ± 0.02 Power-law eff f 2 е 5746 ± 317 6197 ± 253 6305 ± 31 5736 ± 316 spectra pl k 1014 Hz 3.70 ± 0.26 3.14 ± 0.16 0.88 ± 0.01 3.70 ± 0.27 Table 1. ...

Клуб Скептиков] [Конференция] . ... Юрий Тихонравов : re: Ахиллес и черепаха . ... Парадокси и евристики. ... Skeptik Ахиллес и черепаха Юрий Тихонравов re: Ахиллес и черепаха (+) 21-Авг (20:07) Mauhuur re: Ахиллес и черепаха 21-Авг (21:54) Юрий Тихонравов re: Ахиллес и черепаха 21-Авг (22:26) Mauhuur re: Ахиллес и черепаха 22-Авг (00:14) Doctor re: Ахиллес и черепаха - Юрию (+) 22-Авг (18:08) Юрий Тихонравов re: Ахиллес и черепаха - ...

... In accordance with the de-orbit plan the OC "Mir" is in a waiting mode continuing its deceleration in Earth atmosphere. During the previous day the OC "Mir" onboard systems were subject to a routine check out, the current trajectory parametres were registered. The processed information confirms the MCC readiness for the final stage dynamis operations with the OC "Mir". ... The first corrective impuls ( the cargo ship "Progress M1-5" 8 control engines are fired): . T burn start - 03.32; . ...

... Julian Date Flux Densities (mJy) Julian Date Flux Densities (mJy) 2440000:0 A1 A2 B C 2440000:0 A1 A2 B C 8930.9968 153.8 134.6 59.8 22.6 9021.6846 154.0 137.0 59.0 22.9 8939.7717 163.7 146.0 66.1 22.9 9024.6766 151.4 134.6 58.4 22.1 8940.8936 153.2 135.8 59.2 22.6 9030.5334 156.7 139.1 59.0 22.4 8944.7380 161.7 142.2 63.7 23.1 9032.6650 151.8 136.5 57.7 22.6 8951.8637 148.4 131.3 58.3 21.7 9036.7067 155.1 137.1 58.8 ...

... Этот раздел включает в себя оцифрованные копии книг, так или иначе принадлежащих к Астрономической тематике. ... Если у вас есть отсканированные книги входящие в тему этой библиотеки, обязательно напишите мне, возможно кто то давно ищет эту книгу, да и в целом пополнение библиотеки очень приветствуется. ... В.А.Бронштэн, Издательство "Наука" . ... Optomechanical Engineering Handbook Content . 1999, . Ed. Anees Ahmad, CRC Press LLC. ... Optomechanical Engineering Handbook-4, Metal Mirrors . ...