Hello,
Last night I was able to image some of the brighter moons of Uranus. Although I managed to record Oberon, Ariel, Umbriel and Titania it appears that once again, Miranda (16.55) eluded the Mewlon 180, x2.5 Barlow and ST7 combo.
Whilst gathering the data for the attempt, I noticed a discrepancy between the plotted positions as reported by
SkyTools 3 Pro and
Starry Night Pro Plus 6 and so I compared their predicted positions against my actually recorded positions for 1st Nov 2009 at 10:26pm AEST.
SkyTools appears to have been spot on whereas
Starry Night Pro seems to have a couple of the moons off by a few arc seconds – a small margin indeed. According to
Starry Night Pro, Miranda “should” have made an appearance close by Umbriel but alas, she eluded me once more. Sigh!
I guess the definitive way to do this would be to use the data from the
NASA Horizons JPL system.
Cheers
Dennis