Eta Persei (Double Star) - Sketch

Location and conditions: Rehovot city, Israel, ~5.0 mag. sky.
Date: 18/09/2010, 01:00
Instrument: Orion Skyview Pro 8" f/5 Newtonian, 80X.
Drawing details: Graphite pencil sketch on a white paper, made while observing with a telescope under a red light. Processed in Photoshop. Observer: Michael Vlasov.