... 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. ...

Astrophysical Research Consortium - Apache Point Observatory 9/28/2004 12:06 AM Astrophysical Research Consortium Apache Point Observatory 3.5m Telescope - DIS III DIS III - Current Status, History, and Information Contact your Russet McMillan (primary) or your Observing Specialists (secondary) for additional information or corrections. Contact Jack Dembicky for web page errors, corrections, ommisions, and/or additions. ...

Next: Influence of Climate Variables Up: C.J. Butler Previous: C.J. Butler Contents . A paper describing the calibration of the long temperatures series (1795-2003) from Armagh Observatory was accepted for publication by the International Journal of Climatology. ... This material is of the utmost importance for future studies of the Armagh climate series which, now that they are standardised, receive more and more attention by climatologists. ...

... Compatibility: Available in Apache 1.3 and later. Available as an External module in Apache 1.1 and later. ... It does its work by comparing each document name in the requested directory against the requested document name without regard to case , and allowing up to one misspelling (character insertion / omission / transposition or wrong character). ... Compatibility: CheckSpelling was available as a separately available module for Apache 1.1, but was limited to miscapitalizations. ...

... Observing springtime deep-sky objects with a large telescope . ... Buy and sell astronomy gear April 9 . ... Astronomy.com: Jim Forbes . ... A refracting telescope makes use of this property with a carefully made lens having curved surfaces. ... The first telescope (of any type) was constructed by the Dutch spectacle maker Hans Lippershey (1570 1619) who, on October 2, 1608, filed a patent application for "an instrument for seeing faraway things as though nearby." ... Buying your first telescope . ...

Operating Instructions PEC Utility Tool For use with Meade LX200GPS and RCX400 Telescopes PEC Utility The PEC Utility Tool allows you greater control over the Periodic Error Correction functions of your LX200GPS or RCX400 telescope. ... PEC Utility option is located in the AutoStar Suite telescope menu and is available with the AutoStar Suite Update, on the meade.com website. ... The "Shifting the PEC" now allows you to shift the corrections forwards or backwards to compensate for the time lag. ...

Target: M31 and M32 Date: 2012-11-22 Time: 00:22 to 00:52 Telescope: FSQ Camera: Apogee 9000 Filters: UBVRI Exposure time: sum of 4 frames at 100 seconds each Observer: John Kielkopf Processing: John Kielkopf Gradient in sky background removed with imlevel after dark and flat correction WCS headers added with astrometry.net. Headers tweaked to force coincidence in ds9 for rgb processing. Color image from ds9 with sqrt mapping of R, V, B to r, g, and b, 1 pixel smooth. ...

... Jackson High School, Jackson, Michigan . ... Grosse Pointe North High School, Grosse Pointe Woods, Michigan . ... New Jersey Astronomy Center for Education at Raritan Valley Community College, Somerville, NJ . ... Thomas Morin . Belmont High School . ... Broken Arrow Senior High School . ... Shaker Heights High School . ... Rainwater Observatory and Planetarium . ... Hedgesville High School & Berkeley County Planetarium . ... St. Paul's School . ... Euclid High School . ... Mayo High School . ...

TEST ATMOSPHERIC DISPERSION CORRECTION II (ADC II) Les planХtes plus nettes ! L 'ADC II est un accessoire qui permet de corriger la dispersion des couleurs provoquИe par l'atmosphХre sur la lumiХre des astres. ... Le rИglage des prismes se fait Ю l'aide des deux molettes sur le cТtИ. Prise en main de l'ADC L'ADC est constituИ de deux prismes ronds chargИs d'induire une dispersion des couleurs exactement inverse Ю celle causИe par l'atmosphХre. ... Nous avons voulu essayer l'ADC sans Barlow. ...

Next: NICMOS Science Up: NICMOS Data Calibration and Previous: NICMOS Software at the . ... Reference File Tools . Image Analysis and Reduction . ... These include the tasks used in the STScI pipeline, tools to generate the reference files used by the calibration pipeline tasks, and general image analysis, manipulation, and arithmetic tasks. ... Calnica is used to apply instrumental calibrations to individual datasets, while calnicb is used to process associated sets of NICMOS images. ...

... Phase Diversity Imaging: Real Time Correction of the Atmosphere and Telescope . Dr. Robert A. Gonsalves . ... Join us this month for what promises to be an engaging talk by Dr. Robert A. Gonsalves, “Phase Diversity Imaging: Real Time Correction of the Atmosphere and Telescope.” Phase diversity imaging uses multiple images of an object to combat the deleterious effect of the changes in the atmosphere and telescope. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

Sternberg astronomical institute activities on site testing programs review Victor Kornilov comprehensive/characterization/of/astronomical/sites > kislovodsk/russia/2010/october/4-9 > Introduction This presentation responds on our activity in 5 last years only, inspite of that in SAI site testing researches have been started many years ago. ... More detailed discussion is devoted to MASS and DIMM measurements processing, some additional effects which were taken in account in last year. ...

... ASTRONOMICAL TELESCOPES . ... HOME . ... Home Products Telescopes Astronomical Telescopes . Recreational astronomical telescopes (ASTELE™) feature Maksutov Cassegrain or Maksutov Newtonian optical design. ... These telescopes (except ASTELE ™ 70, 95) are available in three configurations: OTA (Optical Tube Assembly), G (German Equatorial Mount) and EL (with motorized base). ... These telescopes are available in two configurations: OTA (Optical Tube Assembly) and G (German Equatorial Mount). ...