In this image 21 best frames were used, in order to identify the presence of the bright arc encircling venus related to atmoshere of the planet against the sky. In this way part of disk against the sky need to be visible, despite the difficult detection principally due to turbolence and likely setting.  

When i used the mean of 21 frames, and a multiply coefficient, in order to have bright image, a part (faint) of this arc can be detectable. A very faint aureole of Venus was visible. This image is not a composition but just 21 frames taken from an AVI acquired using a TMB 13 cm refractor, herschel wedge, ND 3 and baader continuum filter + barlow 2x. Location Rome Time is 04:45 UT. 

ANIMATION VENUS 2017 AND TRANSFORMATION 

VENUS DIRECT VIEW AT THE TELESCOPE EFECT OF THE TURBOLENCE

TRANSIT OF  VENUS ACROSS THE SUN  JUNE, 8, 2004 (from 05:28 to 07:10 UT)

Refractor Unitron-Polarex 10 cm f/15 with kodak gold film 50 ASA at prime focus