Dissapearance of (XZ93442) a possible double star discovery. I was using my home made 18" Newtonian at prime focus (F6) using a PC164c camera and KIWI--VTI. The light curve graph shows the steps as the stars disappear behind the Moon. With it we can get an approximate magnitude for the companion and if another observer or observers were capable of recording this event far from me at another position on the Moon limb a position angle for the two stars can be determined.
I also want to say that I used Occult 4.1 and LiMovie. Can't thank them enough for the wonderful freeware!
This is the light curve for the dissapearance, the brighter component D'd first with a 0.087s step duration.
Lunar occultation of XZ93442, April 5, 2006
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2006 Apr 5 at 3h 20m
Star = X93442 Observer = Steve Messner Telescope = 45.0cm
Double star details from the XZ catalogue Star is the primary of the following pair OCc1657 2006 : 98.0 : 0.040 : 11.60 12.10: X 93442 ------
Observation details Star Mag = 11.06 Event = D D PA = 98.238 AA = 93.679 l = 5.806 b = -6.369 RV = 0.4154 Scale = 0.986 CCT = 6.87 CA = 86S %Illum = 46% Alt = 48 T1 = 34.36 T2-T1 = .087 * * * * * Second analysis for this one. Faint companion is visible for 3 frames.
06 Apr 5 3 20 34.2 d X 93442c 11.1
X 93442 is double: ** 11.6 12.1 0.040" 98.0, dT = +0.1sec
X 93442 has been reported as non-instantaneous (OCc1657). Observations are highly desired
