... Spherical aberration, coma, and astigmatism are also easily observed using the star test. ... Off-axis images are complex. ... Fig. ... Diffraction by a circular aperture as a function of defocus for no aberration Airy Disk 1 wave defocus Less than 1 wave defocus Fig. ... Diffraction by a circular aperture as a function of defocus for third-order spherical aberration Paraxial Focus Small distance inside paraxial focus Moderate distance from marginal focus Immediate neighborhood of marginal focus Fig...

National Aeronautics and Space Administration . ... JOHN E. BLAHA (COLONEL, USAF, RET.) NASA ASTRONAUT (FORMER) . ... EDUCATION: Graduated from Granby High School in Norfolk, Virginia, in 1960; received a bachelor of science in engineering science from the United States Air Force Academy in 1965 and a master of science in astronautical engineering from Purdue University in 1966. ... NASA EXPERIENCE: Selected as an astronaut in May 1980, Blaha has logged 161 days in space on 5 space missions. ...

Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 20 - 26.08.2012, Forecast on 27.08 - 03.09.2012, Carrington Rotation 2127 (15,04.08.2012) SUNSPOT ACTIVITY OF THE SUN REMAINED AT THE AVERAGE LEVEL. ... ON THE VISIBLE SOLAR DISK CONSTANTLY THERE WERE 4-5 SUNSPOT GROUPS ONE OF WHICH, APPEARING ON THE VISIBLE SOLAR DISK ON AUGUST 25, AVERAGE SIZES. NEXT WEEK THE LEVEL OF SUNSPOT ACTIVITY IS EXPECTED TO BE AVERAGE. ... FLARE ACTIVITY WAS ON THE LOW LEVEL IN ALL DAYS. ...

Электронная библиотека астронома-любителя. ... библиотека . архив RSN . ... Ru.Space.News: . Апрель 1998 . ... Дата: 03 апреля 1998 (1998-04-03) От: Alexander Bondugin Тема: Hubble Reveals Details Of A Newly Born Planetary Nebula Привет всем! ... STScI-PR98-15 HUBBLE REVEALS DETAILS OF A NEWLY BORN PLANETARY NEBULA Astronomers have caught a peek at a rare moment in the final stages of a star's life: a ballooning shroud of gas cast off by a dying star flicking on its stellar light bulb. ...

... click image to view discuss) . ... taken at 16:51:07 local 1/200 s at f/5.6. ISO 400, 400 mm fl . Submitted by Joseph Kristl on 01/22/2007 11:09:10 . ... 16:53:39 local time 1/160 s, f/5.6, ISO 400, fl = 180 mm . ... 16:54:59 local 1/100 sec, f/5.6, ISO 400, fl = 400 mm . ... 16:54:59 local 1/100 s, f/5.6, ISO 400, fl = 400 mm . ... 17:00:22 local 1/60 s, f/5.6, ISO 400, fl = 400 mm . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

... Version 2.25 - 2001-11-16 -------------- +(src/) Removed code that adds an exposure image map to the product file (fixes SPR 2639). ... Version 2.4: 26 March 1999 removed accuracyLevel=LOW Version 2.3: 10 December 1998 updated dependancy file RE:mssllib Version 2.2: 7th Oct 98 message call changed to warning (line 725) Version 2.1: 17 Sept 1998 intParameter( tol ) changed to realParameter( tol ) appended || exit 1 after omatt command (test/testomatt) ...

... MASTER Net is 56 square degrees per 1 exposition . ... 06 Dec 2015: GRB 151205B: MASTER-NET early optical observations GCN18665 . ... 18 Nov 2015: GRB 151118A: MASTER-NET optical observations GCN18613 . ... 12 Nov 2015: GRB 151112A: MASTER-NET optical limit GCN18591 . ... 07 Nov 2015: GRB 151107A: MASTER-NET optical observations GCN18565 . ... 31 Oct 2015: Five OTs detected by Global Robotic MASTER Net ATel8232 . ... 02 Oct 2015: GRB 151001B: MASTER-NET early optical observations GCN18380 . ...

NEWS FEDERATION rus ENCYCLOPEDIA rus HISTORY rus MIR STATION RUSSIAN . ... Cosmonauts. ... Military Space . Space Science . ... Heroes Of Space Remember . Military Prospects Of Russian Space . Within the Russian Space Control System, orbital constellation named Stroy will be deployed soon. ... Military Ecologists Of Plesetsk Certified . Change Of Power At Baykonur . Russian government decided to transfer coordination of Baykonur operations from the Space Forces to Rosaviakosmos. ...

... Nashville. ... Is it my fault that I can't reap what I sow? Nashville, did you give me half a chance With your southern style, and your hidden dance away? ... Nashville , I'd like to know your fate I'd like to stay a while But I've seen your lowered states today ( I've seen them today , honey, I swear I've seen them today ) Now I'm leaving - I've got all these debts to pay You know we all have our dues - I'll pay 'em some other place I'd ...

... Master . ... SAI MSU . Conference was supported by PLC "MO "OPTIKA" . ... Morning session . Chair Hugo Levato (ICATE, Argentina) . ... Vladimir Lipunov ( MSU , SAI ) . ... Evgeniy Gorbovskoy (MSU, SAI) & . А lexander Belinskiy (MSU, SAI) . ... Chair Claudio Mallamaci (OAFA, Argentina) . ... Using MASTER Net in the MSU educational process . ... Chair Victor Kornilov (MSU, SAI) . ... Nikolay Budnev (ISU ) . ... Excursion to the Moscow Kremlin . ... Joint MASTER and Russian Pereplet session. ...

... LMC Project Outline . NGC 1818 Initial Results . ... The Large Magellanic Cloud (LMC) is uniquely suitable for the study of massive star clusters at all stages of evolution. By combining HST observations of these clusters with N-body models we hope to understand the origin and evolution of rich star clusters in our own Galaxy, in the LMC, and beyond. ... We aim to combine our HST observations with N-body models to understand the formation and evolution of globular clusters. ...

. Date, from: . 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 January February March April May June July August September October November December 1952 1953 1954 1955 1956 . to: . 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 January February March April May June July August September October November December 1952 1953 1954 1955 1956 . Longitude, from: . to: . Latitude, from: . to: . Area, from: . to: . Brightness, from: . to: .

New GCVS Version (GCVS5) FileName Explanations ----------------------------------------------------------------- ReadMe This file GCVS5 The ... ------------------------------------------------------ 1- 2 I2 --- Constell [1/88]Constellation numeric code 3- 6 I4 --- Number Star number within the constellation 7 A1 --- Component *Component identification 9- 18 A10 --- GCVS * Variable ... Field is non-blank if magMin is a magnitude or amplitude given in a system other than that indicated by magCode. ...

... Recent Topics . ... MAO main . ... August Issue: How We Conquered the Planet . ... Тема: August Issue: How We Conquered the Planet . To view this email as a web page, go here. links.email.scientificamerican.com/servl.. NzIxOTM0NTcxS0 =0 . ... A new hypothesis explains why links.email.scientificamerican.com/ctt?k... ... What they find could change the future of planet hunting links.email.scientificamerican.com/ctt?k... ... Check out our NEW Products! links.email.scientificamerican.com/ctt?k... ...

Figure 4a. The defocus in arcseconds of blur on the image plane is shown as a function of time for the night of August 14. Arrows mark the times at which the telescope focus was manually changed. The labels show the magnitude of the changes made. The squares show measurements of the defocus just prior to and after manual focus changes. ... Below I will show clear indications of errors in the secondary motions which are probably contributing significantly to focus errrors in the telescope. ...

THE ARGUMENT AGAINST LONG EXTRAGALACTIC DISTANCE SCALE Gaseous discs of S0 -- Sd galaxies appears to be gravitationally stable or close to stability. Dependence of the gravitational stability parameter of gaseous disc $M_g/M_c$ upon the color index $(B-V)^0_T$ which reflects a relative number of young stars, is found. Here $M_g$ is total mass of gas in a galaxy, $M_c$ - mass of gas which corresponds to marginal stability of gaseous disc at distances from center. ...

Wednesday, August 22nd, 2012 . GTOPO30 is a global digital elevation model (DEM) with a horizontal grid spacing of 30 arc seconds (approximately 1 kilometer)? (http://eros NULL .usgs NULL .gov/#/Find_Data/Products_and_Data_Available/gtopo30_info) . ... You are currently browsing the Лаборатория лазерной интерферометрии blog archives for August, 2012. ... Наши публикации . ... Публикации за 2010 . Публикации за 2011 . ... Лаборатория лазерной интерферометрии is proudly powered by WordPress . ...

. This color image was obtained with Fuji color film (Super Plus 400) in focal plane of the 70-cm reflector (F = 27 m) at Lisniki Observatory by A.M.Evtushevsky. Data and time of observation: April 27, 1997, 21:25 LT. Comet-Earth distance: 1.7 a.u. Time of exposure: 10 min. Field of view : 3 minutes of arc. Distance between shells, in average: 15 000 km. Diameter of bright coma in the picture center: of about 5 000 km. Last updated: January, 2005.

... Astronomical Observatory, Shevchenko Park, Odessa, 65014, . ... The XVI -th G. Gamow's Odessa Astronomical Summer Соnference-School, 14-20 August, 2016, Odessa, Ukraine . ... The XV -th G. Gamow's Odessa Astronomical Summer Соnference-School, 16-23 August, 2015, Odessa, Ukraine . ... The XIV -th G. Gamow's Odessa Astronomical Summer Соnference-School, 17-23 August, 2014, Odessa, Ukraine . ... The XIII -th G. Gamow's Odessa Astronomical Summer Соnference-School, 19-25 August, 2013, Odessa, Ukraine . ...

Nickolai Copernic: "making the Sun stop, pushing the Earth". ... The aim of Copernic's investigations is improving the calculating schemes. ... In heliocentric system appeared an opportunity of calculating real proportions of Solar system using the radius of the Earth's orbits as an astronomical unit. Copernic's book "About Rotation of Celestial Bodies" contains a discription of astronomical devices as well as a new more exact catalogue of stable stars. ...