STF 2292 Double Star - Sketch
Object details: STF 2292 (HD 167007) double star. Constellation: Hercules, magnitude: 7.8/8.6m, separation: 1.0".
Location: Near Nahal Barak, Negev desert, Israel, SQM 21.88 site.
Conditions: Actual NELM ~6.5m, seeing ~7/10, mediocre transparancy.
Date and Time: 5-6/07/2019 , ~01:00 (UT+3)
Instrument: VX12 12" F/4 Newtonian on AZ-EQ6, 3.4mm Vixen HR (353x, 0.11°).
Drawing details: Graphite pencil sketch on a white paper, made while observing with telescope under a red light. Scanned, inverted and processed in Photoshop. The brightness is slightly exagerrated for presentation purposes. Observer: Michael Vlasov.
Original drawing: