my son made for me a special gift: An astronomical sketching book. It is small enough for easy handling at the telescope, has thick yellowish pages and a durable cover. I use it from now on for the most sketches. So you see here a sketch black on yellow.
I used my 8 cm Apo for this sketch. The overview image was done by 60x. The sun stood low but was very steady so I could use 120x for the details. This is rarely the case.