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MARTINDALE’S CALCULATORS ON-LINE CENTER ASTROPHYSICS, ASTRONOMY, ASTROCHEMISTRY, ASTROBIOLOGY & COSMOLOGY CENTER SECTION 2: TELESCOPES, OBSERVATORIES, ASTRONOMICAL DATA VIEWERS, SKY CHARTS (Calculators, Applets, Spreadsheets, |
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of a telescope and CCD camera to given stars and seeing conditions…” Magnitude Limit of CCD Camera and Telescope Calculator INPUT Values include:
Site and Date; Phase and Postion of the Moon, Position of the Sun; Telescope and Detector
Number of Mirror surfaces, Pixel Size, Read Noise of CCD, Filter and CCD Parameters, etc….” For more information see
Color Index of Star; Zenith Distance; Extinction Coefficient; etc…” For more information see
any telescope & eyepiece combinations you enter…” Telescope Calculator INPUT Values include:
Telescope’s Focal Length; Eyepiece Specifications; etc…” Telescope Calculator OUTPUT Values include:
Theoretical Magnitude limits your telescope; Theoretical Resolution limits for your telescope; etc…” For more information see the TELESCOPE & EYEPIECE WITH PRESET DATA CALCULATORS & APPLETS
f ratio, focal length, eyepiece apparent field, and eyepiece focal length as required to calculate the estimated objective performance, telescope magnification, magnification per inch, true field, exit pupil size, etc…” Ken’s Telescope Calculator INPUT Values include:
Barlow Lens X Factor; etc…” Estimated Objective Performance
Max Field of View for 1.25″ Focuser; Max Field of View for 2″ Focuser; Max Field of View for 4″ Focuser; Dawes Resolution; etc…” Estimated Eyepiece Characteristics
Magnification; Magnification per inch; etc…” For more information see TELESCOPE DESIGN CALCULATORS & APPLETS
Telescope Calculator INPUT Values include:
Focal Ratio or Length; Eyepiece; Apparent Field; Barlow Lens…” Telescope Calculator OUTPUT Values include:
Light Grasp; Resolving Power; Limiting Magnitude; Magnification; True Field; Exit Pupil…” For more information see RADIO INTERFEROMETER CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS
particular technique in radio interferometry called earth rotation aperture synthesis…” For more information see |
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viewed by a given space telescope…” Viewing Calculator INPUT Values include:
Object Name or Coordinates; Name Resolver; Coordinate System…” For more information see
Galactic coordinates, parallactic angle, an hourmass table, Julian date, moon phase and more besides. Just provide location, date, time and coordinates…” For more information see
Astronomical Sky Calendar INPUT Values include:
Observatory
Mt. Hopkins; Shattuck Observatory; etc…” West Longitude & North Latitude; For more information see
includes the theoretical RMS noise in an resultant image (Stokes I, Q, U, or V). The corresponding brightness temperature sensitivity is also calculated…” ATCA Observing Characteristics Calculator INPUT Values include:
Number of Channels; Image Weighting Scheme; etc…” For more information see
and continuum observations using selected Parkes receiver/correlator configurations…” Parkes Receiver Sensitivity Calculator INPUT Values include:
Observing Mode; Integration Time…”
rise/set times and angular size for the Sun, Moon and planets at a chosen site…” Planets Calculator INPUT Values include:
Site (Choose from over 60 different Sites)
Anglo-Australia 3.9m Telescope; Apache Point 3.5m Telescope; Bloemfontein 1.52m Telescope; Brisbane QLD; Cambridge 1 Mile; Canada-France-Hawaii 3.5m Telescope; etc…”
is 128 times your requested pixel size. This program uses pre-computed images at selected guide star magnitudes, seeing values and guide star to object distances to obtain your image. The attenuation of the modulation transfer function brought by anisoplanatism effects has been…” For more information see
various quantities related to the MegaCam observing performance…” MegaCam Direct Imaging Exposure Time Calculator INPUT Values include:
Seeing Range; Filter; Mag. AB; SNR; Sky; Airmass; etc…” For more information see
exposures at Mauna Kea as calculated by…” For more information see
ISPI Exposure Time Calculator; Computing Exposure Times with the IRAF Task CCDTIME; SMARTS Imager Exposure Calculator; etc…” For more information see
the Owens Valley Radio Observatory (OVRO) millimeter array and the Berkeley-Illinois-Maryland Association (BIMA) millmeter array – to form a powerful astronomical tool for the new millennium…”
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intended to give astronomers the ability to predict the signal to noise achieved under a set of assumptions about the performance of an instrument and the observing conditions. The accuracy of these predictions will improve as the instrument is calibrated and tracked under actual operational conditions. For the moment, ETC accuracy is dependent on preliminary calibrations and estimates of operational conditions…” For more information see
Target Doppler Shift
Sky Conditions;
BIMA array, given inputs about weather, frequency, and array configuration…”
Observing band & data rate; On-source integration time; Number of spectral channels, integration time, and maximum baseline length; Number of polarizations, subbands per polarizations, and bandwidth of a subband…” For more information see the
imaging an object with a given S/N…” Signal to Noise Calculator INPUT Values include:
Sky Background Area; Flat Level; Sky Brightness; Air Mass; Number of Frames; Object Magnitude; etc…”
Earth atmosphere it is refracted by the air, the refraction depends on the light path distance, temperature, atmospheric pressure, etc. The net change of the refraction is to lower the apparent altitude of the celestial objects (relative to its geometric position)…” Refraction Calculator INPUT Values include:
light seen on the ecliptic, 180o from the Sun. It is part of the zodiacal light and it is a reflection of light by dust particles in the ecliptic plane of the solar system…”
Exposure Time Calculator; Visibility Tool; Angle Calculator; Zodiacal Light Calculator; etc…” For more information see
Extended source having, etc…” Spectral distribution
Library spectrum of a star with spectral type; etc…” Instrument optical properties
Spectral distribution…” Instrument (Acquisition Camera) and Telescope Configuration
Detector properties; Telescope configuration…” Observing condition constraints
Sky transparency (cloud cover); etc…” Details of observation
Analysis Method; etc…” |
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will be detected during an imaging or spectroscopic exposure of a point or extended source with one of the common-user instruments of the Isaac Newton Group of telescopes…” Exposure Time Calculator INPUT Values include:
Object Information
Sky Conditions; etc. For more information see
astronomical telescope in the world designed specifically to operate in the submillimeter wavelength region of the spectrum. The JCMT is used to study our Solar System, interstellar dust and gas, and distant galaxies. It is situated close to the summit of Mauna Kea, Hawaii, at an altitude of 4092m…” Heterodyne Integration Time Calculator INPUT Values include:
Select Tau or Select Weather Band; Assumed Zenith Angle; DAS mode; etc…” For more information see
infrared and sub-millimeter astronomy projects and missions…” For more information see the
(distance, in arc seconds, from the -FIX position of the chip), and wavelengths for WFPC2 Linear Ramp Filter observations…” For more information see
WFPC2 Calculators & Tools include
losses on point sources…”
“…Point sources; Extended sources; Point sources + stellar background; Extended sources + stellar background…” |
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ASTRONOMY & ASTROPHYSICS DATABASE & CATALOGUES
library of published astronomical catalogues and data tables available on line, organized in a self-documented database…”
CADC’s Gemini Science Archive (GSA); Canadian Virtual Observatory: Observation Catalog Exploration Tools (Octet); CADC’s CFHT Catalog; Canadian Galactic Plane Survey Archive; etc…” For more information see the
molecular species…” For more information see the
also returns results in common standardized formats, allows access to many remote archives, and will send selected datasets into analysis tools like Aladin, OASIS, VOPlot and VOStat…” For more information see the EXAMPLES OF SKY CHARTS SOFTWARE
real time with OpenGL. With Stellarium, you really see what you can see with your eyes, binoculars or a small telescope. Stellarium is also used in real planetariums…” Stellarium includes
asterisms and illustrations of the constellations; images of nebulae (full Messier catalogue); etc…” EXAMPLES OF ONLINE SKY CHARTS
real time with OpenGL. With Stellarium, you really see what you can see with your eyes, binoculars or a small telescope. Stellarium is also used in real planetariums…” Stellarium includes
asterisms and illustrations of the constellations; images of nebulae (full Messier catalogue); etc…”
for any time, date and location on Earth. It also provides details for the Sun, Moon and planets…” For more information see
detailed star charts showing the satellite’s track through the heavens. All our pages, including the graphics, are generated in real-time and customized for your location and time zone…”
navigation (most visible stars (56) and planets (4), Sun and Moon)…” For more information see
the forms described below for any time and date, viewpoint, and observing location…” For more information see
and/or comets) which are likely contained in the specified field on the specified date/time…” For more information see
(asteroids and/or comets) which are optically observable from the specified location on the night of the specified date/time with the specified observing constraints satisfied…” For more information see |
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