British Astronomical Association
Supporting amateur astronomers since 1890

Secondary menu

Main menu

BAA Community

Superhumps from IX Dra

Image

Expand image

About this observation
Observer
Stewart Bean
Time of observation
13/09/2019 - 13:05
Object
IX Dra
Observing location
Somewhere between Earth and Moon
Equipment
TESS satellite, JD2458740
Lightkurve
in a Python environment
Exposure
2 min cadence, 100 mm obj, 600-1000nm filter.

I have downloaded TESS data from the MAST site ( where most variable stars will have some TESS light curves) and plotted the superoutburst from Sept 2019. TESS stares continuously at a fixed point for about 27 days recording red light from about 20,000 targets. Stars round the ecliptic poles receive almost continuous coverage for a whole 12 months campaign so those in Draconis are well favoured.

The plot shows the first part of a superoutburst  with well defined superhumps. The Y axis is in raw flux and not in magnitude.

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.