... Киевский клуб любителей астрономии "Астрополис" > . ... Оборудование (Модераторы: LifeIsGood , Hornet ) > . Timer Remote C1 for Canon XT 300D 450D 350D R8A9 . ... Астрономия . ... Оборудование и телескопы . ... Астрономия в Украине . ... Бердянское общество любителей астрономии "ОРИОН" . ... Одесское общество любителей астрономии ?АСТРОДЕС? Портал белорусских любителей астрономии - BelAstro.Net . ... 09 Февраль 2010, 21:47:15 ? ... Ответ #1 : 09 Февраль 2010, 21:55:48 ? ...

... The choice of exposure time generally depends on the signal-to-noise ratio required to meet the science goals. ... See "Overhead Times" on page 29 for more information about exposure timings.) ... For example, shortening an exposure from 400s to 350s has no effect on orbit packing; they both require 9 minutes to execute ( CLOCKS=NO, the default setting). On the other hand, shortening an exposure from 180s to 160s trims the execution time by 2 minutes (again CLOCKS=NO, the default setting). ...

... Exposure Time Calculator (ETC) . ... ESO - Public Surveys . ... the recommended values to use for DIT, . ... Detector on-chip integration (DIT): seconds. to your chosen value - a separate page gives recommended values to use for DIT - for modes 1 and 2 below you may wish to start with the maximum recommended values as these will minimize the effect of read noise (a total object exposure of Y secs with DIT=X secs will produce Y/X lots of read noise) and give you a lower limit on the time needed. ...

. XMM-Newton Science Analysis System . eregionanalyse (especget-1.27.7) [???] . Meta Index / Home Page / Description / Output Either the total exposure time of the image or the value of the exposure map at the centre of the source region. XMM-Newton SOC/SSC -- 2008-10-24

... Classes . ... casa::Timer . ... user () const . ... Get the user+system time (in seconds) since last "mark()". double . ... Get the user+system time (in seconds) since last "mark()". double casa::Timer::all_usec . ... Get the user+system time (in microseconds) since last "mark()". void casa::Timer::mark . ... Show real, user, system time (in seconds) on cout or a user supplied stream. double casa::Timer::system . ... Get the system time (in microseconds) since last "mark()". double casa::Timer::user...

. Please, enter light elements for your star and Julian Day interval. HJD0: . Period: . JD1: . JD2: .

... Basic time functions . ... Example 2: Set a random number seed . ... Uses of time functions include: . ... time_t time(time_t *tloc) -- returns the time since 00:00:00 GMT, Jan. 1, 1970 , measured in seconds. ... timer.c */ #include <stdio.h> #include <sys/types.h> #include <time.h> main() { int i; time_t t1,t2; (void) time(&t1); for (i=1;i<=300;++i) printf(``%d %d %d n'',i, i*i, i*i*i); (void) time(&t2); printf(`` n Time to do 300 squares and cubes= %d seconds n'', (int) t2-t1); } . ...

Next: The hardware and software Up: Keeping Time Previous: Keeping Time . ... Since the Earth is round, noon happens at different times in different places. This leads to the concept of local time . ... As soon as you need to communicate with distant places, you'll notice the need for a common time. ... Each local time is called a time zone. ... Other countries do not do this. ... In the US and some other countries, the local time zones have a name and a three letter abbreviation. ...

... Flats : Properly exposed flats over all echelle orders require a two-step process. Flats are taken both with and without a CuSO4 (aka "blue") filter in the beam. ... Suggested exposures are 7 seconds ("red"; no filter) and 240 seconds ("blue", CuSO4 filter) yielding S/N values of ~480. The filter for "blue" flats is listed as "blue" in the Config window in Echelle control under Remark. ... Exposure times for objects can be derived from the following plot: . ...

. Next: PC To VAX Up: Help Sheets For Previous: Help Sheets For . When using the PC out of the WINDOWS mode, use this conversion sheet to run the Lynxx camera. To get any time that is not printed here, you can add, subtract, multiply and divided at will to get the desired time. i.e.) 2.5 min=2 min+30 sec= 456+114=570 so you would type in 570 for a 2.5 min exposure. You must be out of windows for these times to work. Scott J. Wolk . Mon Nov 25 15:41:03 EST 1996

... Retired ETCs . Historic ETC versions: select.. P93 phase 1 (Sep.2013) P93 phase 2 (Dec.2013) P94 phase 1 (Mar.2014) P94 phase 2 (Jun.2014) P95 phase 1 (Sep.2014) P95 phase 2 (Dec.2014) P96 phase 1 (Mar.2015) P96 phase 2 (Jun.2015) P97 phase 1 (Sep.2015) P97 phase 2 (Dec.2015) . SkyCalc Sky Model Calculator . ... MUSE ETC: New seeing/IQ PSF model . ... VISIR imaging ETC: Updated sensitivity model . ... GIRAFFE, VIMOS IFU,MOS and EFOSC2 spectroscopy: . ... Paranal UT1 . ... E-ELT . ...