PENCIL AND CAMERA
The toughest part of sketching Venus is to avoid exaggerating its features, which are all of low contrast. Prepare sketch blanks ahead of time, using a standard scale, such as 1 mm per arcsecond, and checking the size of Venus in an almanac, magazine, or software.
It is fairly easy to take photos of a crescent disk, but the cloud features of Venus call for advanced techniques. For best results, photograph in UV light by using a UV transmitting filter, such as a Wratten 18A. A reflector tele-scope with a long focal length will give a suitably large image, but avoid Schmidt-Cassegrains, which have glass corrector plates that absorb UV light. Use eyepiece projection to enlarge the image, but make sure the lens elements are made of quartz or fluorite.