Observing 15./16.8.2015

Date: 15./16.8.2015 Time: 23:30-03:30 Observing site: Stormälö, Parainen, Finland Instrument: N250/1200 mm (10” refractor) NELM: 6.0 SQM: 20.8 Darkness of the background sky: 2 Seeing: 2 Transparency: - Weather: Clear sky, warm, calm, noctilucent clouds and northern lights at low altitude in northern sky Objects observed: NGC 6751, NGC 6755, NGC 6910 Summer 2015 has …

Noctilucent clouds meets Northern lights 15./16.8.2015

Observed phenomena: Noctilucent clouds, northern lights Noctilucent clouds Observed NLC forms: I (Veil) IIa (Bands with diffuse, blurred edges) IIIa (Short, straight and narrow streaks) IVa (Whirls with small angular radius (0.1 – 0.5 degrees)) Brightness of the NLCs: 4 (NLC very bright and attracting the attention of casual observers) Elevation: ~2° Date: 15./16.8.2015 Time: …