All the sketches except Comet Hale-Bopp were made using
18" F4.5 Dobsonian telescope. I drew the objects in a pencil on white paper and
input them to PC by a scanner. Then, white and black were reversed
electronically. North is up if the direction is not shown.
In some sketches
not all the visible stars are drawn.
P/2010 V1 Ikeya-murakami
C/1995 O1 Hale-Bopp
C/2000 WM1 LINEAR
C/2001 Q4 NEAT
C/2004 Q2 Machholz
IC434, B33 M17
NGC3395-96 NGC4038-39 NGC7793