Sunday, May 23, 2021

Polypus2 Objects

 I come to you after days with the second beta of Polypus2 software. You can download it from resources.  In this time I have implemented the object view. This is activated by the command in the view menu. Here you can select the ephemerid epoch and, in case of near object, show the topocentric coordinates.




In the object view it is possibile see some object lists: 

  • Favorites
  • sync stars
  • Planets
  • Asteroids
  • Messier 
  • NGC
  • UGC

For selected object is showed the position in the sky, the sky chart centered where object is using GSC catalog. Some additinal information are shoed. when object is over the horizon it is possible command a telescope goto on it. Objects can be inserted in the favorites list.

Sync stars list contains 20 bight starts with low declination along all right ascensions. This allow you a precise telescope sync. Star position takes in count the proper motion


Planet list contains all solar system planet plus Sun and Moon. 

Sun and Moon positions are computed using formulas from “Astronomia con il computer” by Janes Meeus.Mercury to Neptune positions are computed using VSPO theory

Mercury to Neptune magnitude are computed using formulas from “Computing Apparent Planetary Magnitudes for The Astronomical Almanac” by James L. Hilton US Naval Observatory


Asteroid list shows the position of object in MPCORB.DAT from Minor Planet Center, positions are computed using formulas from “Astronomia con il computer” by Janes Meeus.


Using the tab sheet Altitude is it possibile see the observation condition of the object in current (or selected) night. On horizontal axis you have the local time on vertical axis the object altitude. Yellow backgroung are for day light, blu background for twilight and dark for astronomical night. Red line show you the object altitude. Because the moon can often annoy astronomical observations it is possible show also the moon altitude by a green line.