... Courtesy of NASA/ESA Observation data (J2000 epoch) Constellation Right ascension Declination Redshift Distance Type Serpens Caput 15h 17m 14.4s[] +21° 35 08[] 12,740±50 km/s[][1] 600±30 Mly (183±8 Mpc)[1] SA0(r) [citation needed ] [a] Apparent dimensions (V) 0.28 в 0.28[] Apparent magnitude (V) 16.0[] Notable features Ring galaxy Other designations PGC 54559,[] PRC D-51[] See also: Galaxy, List of galaxies Hoag's Object is a non-typical galaxy of the type known as a ring galaxy. ...

... 000, 1­12 (2009) Printed 11 February 2010 A (MN L TEX style file v2.2) Analytical approximations of K -corrections in optical and near-infrared bands I1gor V. Chilingarian1 2 ,2,3 , Anne-Laure Melchior 1,4 and Ivan Yu. ... Received 2010 February 01; in original form 2009 August 14 ABSTRACT To compare photometric properties of galaxies at different redshifts, the fluxes need to be corrected for the changes of effective rest-frame wavelengths of filter bandpasses, called K -corrections. ... Table 1. ...

... This oral history session is being conducted with Chris Kraft in Houston, Texas, as part of the NACA [National Advisory Committee for Aeronautics] Oral History Project, sponsored by NASA Headquarters History Office. ... As an example, it was obvious that the use of wing sweep was going to be a major part of the future airplanes of that age, and all of that was confidential. ... As you know, the cowling, as an example, was an invention of NACA, and it changed the look of modern airplanes in those...

Observational Log Cover Sheet Observation Date: Location: Observers: Jan 02, 2016 Home Myself Moon Phase: Seeing: Transparency: Notes: Unknown Unknown Clear At 2130 hours I took out a pair of binoculars and looked at M41. This was the last DSO on the Astronomical League Urban Skies list. I have a few double stars to observe and the entire list will be complete. Page 1 of 265 Observational Log Cover Sheet Observation Date: Location: Observers: Dec 05, 2015 Home Myself Moon Phase: Seeing: Transparency: Notes:

... Brian reported that the new computer was installed at the observatory. ... Rex's club highlights were: 1) mention of the Washington Crossing observatory and its public outreach programs, availability to club members if a keyholder is present and introduction of Gene Ramsey an Brian Van Liew observatory co-chairs; 2) a brief mention that new keyholder training will take place this fall and to contact Brian for details, also acknowledgement that member Larry Kane completed the ...

... Soc. 427, 790­805 (2012) doi:10.1111/j.1365-2966.2012.21990.x Ages and abundances in large-scale stellar discs of nearby S0 galaxies O. K. Sil'chenko,1,2 I. S. Proshina,1 A. P. Shulga1 and S. E. Koposov 1 2 3 1,3 Sternberg Astronomical Institute of the Lomonosov Moscow State University, Moscow, Russia Isaac Newton Institute of Chile, Moscow Branch, Moscow, Russia Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 OHA Accepted 2012 August 23. ... S0s fading from spirals. ...

... Tour Objects Tours can be created using objects from within the Autostar database or a user can enter in different objects (such as a newly discovered comet). ... Automatic Mode: As the user advances to each object, the title of the object appears on line 1 of the display while its descriptive text automatically starts scrolling across line 2. ... For example: STAR "Rigel" LANDMARK az alt "title" "description" Enter the azimuth (az) for the desired object in the following format xxxdxxmxxs. ...