British Astronomical Association
Supporting amateur astronomers since 1890

Secondary menu

Main menu

BAA Community Member Pages Chris Hooker
Image search

Occultation by (156) Xanthippe on 29th October 2018

Image

Expand image

About this observation
Observer
Chris Hooker
Time of observation
29/10/2018 - 19:00
Object
(156) Xanthippe
Observing location
Didcot, Oxfordshire
Equipment
254 mm F/6.3 Newtonian
ZWO ASI120MM-S camera
Exposure
1 second, 0.2 seconds
Like This Image
Share

For once, an asteroid occultation that occurred at a civilised time in the evening! The image above shows the field in Aquila, with the target star being the brightest of the three objects in the small triangle above centre. The asteroid is the object immediately to its right. This image is a stack of 1 second exposures, taken just after 1900 UT, i.e. about 19 minutes before the event. The occultation was recorded using 0.2 second exposures, with the usual UV/IR cut filter removed from the camera to slightly increase the brightness. The light curves of the target and an indicated comparison star were plotted from measured image brightnesses on individual video frames. The grid lines are at intervals of 5 frames, and are therefore 1 second apart; the event lasted 5.6 seconds from my location. 

Copyright of all images and other observations submitted to the BAA remains with the owner of the work. Reproduction of the work by third-parties is expressly forbidden without the consent of the copyright holder. For more information, please contact the webmaster.