To assist in making the rough graphite sketch I used a 5x 50mm finder scope removed from an Orion telescope. After returning home from Arizona to Illinois I made a color drawing from field notes and the graphite sketch. I was planning on a color sketch but the number of colors need and blending seemed too much for the 30 minutes to comet set.
Graphite pencils: 6B, 4B and 2B also black and white pastel pencils on white sketching paper.
Color drawing was made with black and white charcoal pencils and an assortment of color pencils on medium blue paper.