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Object Visibility – STARALT

Staralt is a program that shows the observability of objects in various ways: either you can plot altitude against time for a particular night (Staralt), or plot the path of your objects across the sky for a particular night (Startrack), or plot how altitude changes over a year (Starobs), or get a table with the best observing date for each object (Starmult). For further information, click on the "help" button at the bottom of the page.

Mode
Night
or date when the local night starts. Staralt, Startrack only.
Observatory

Select one above or specify your own site with this format:
Longitude(°E)Latitude(°N)Altitude(metres)UT-offset(hours)
Ex.: 289.2767 -30.2283 2725 -4
Coordinates
Formats can be any of these:
name hh mm ss ±dd mm ss
name hh:mm:ss ±dd:mm:ss
name ddd.ddd dd.ddd
name must be a single word with no dots, avoid using single numbers. Every entry must be in the same format, do not use different formats with different entries. We recommmend a maximum of 100 targets per submission.

Alternatively, you can upload a file with coordinates. You can use the same format as in the TCS catalog. Target names must be single words with no dots.
Options
 Included on plot. Moon coordinates at ~02:00 UT. Staralt only.
 Min. elevation (or max. airmass X). Starobs, Starmult only.
 Output format
Submit
Telescope limits WHT: 89.8° < Altitude < 12° (plot). Targets with +28:57:40>Dec>+28:33:40 won´t be accessible when transiting the zenital blind spot (~0.2° size).

INT: 90° < Altitude < 33° (20° if lower shutter raised), -6h < HA < +6, +90°>Dec>-30° 09´ 30" (HA-Dec plot - lower shutter raised; lowest altitude-Dec plot).
More These are other useful resources for planning observations: iObserve, astronomy tools, JSkyCalc, obstools, NOT´s visplot.



© 2002 Isaac Newton Group of Telescopes
Developed by Peter Sorensen, Marco Azzaro, Javier Méndez

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Contact:  (Astronomy Organisation)
Last modified: 24 February 2024