British Astronomical Association
Supporting amateur astronomers since 1890

Secondary menu

Main menu

BAA Community Member Pages Paul G. Abel
Image search

Venus- possible cusp extensions?


Expand image

About this observation
Paul G. Abel
Time of observation
20/05/2020 - 18:10
305mm Newtonian reflector
Like This Image

Venus yesterday using my 12" Newtonian.  I thought I could see some short faint cusp extensions using the larger aperture.


Andrew Paterson's picture

Its interesting you are beginning to pick up cusp extensions now. The only time I ever saw them was 2 days before the 2004 transit when Venus had definite cusp extensions forming about 75 pc of a ring in my telescope. Most Inferior Conjunctions, I suspect, are too distant to show any definite cusp extensions.

PaulAbel's picture

A number of observers tend to pick them up at each elongation. Yhis is a little earlier for me, I tend to see them when the phase is about 4%.

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.