A telescopic view of the colourful stars near Alpha Persei, aka Mirfak, known as the Perseus OB Association. The large “cluster” contains a mix of bright, young blue stars and yellow stars as well. This is a stack of 5 x 4-minute exposures with the A&M 105mm apo refractor and Hotech field flattener for f/6.2 and Canon 6D MkII at ISO 1600. I added an Orton-style glow effect using Luminar to add the star glows to accentuate the colours. The field is about 3° by 2°.
A closeup of Mirfak in Persus, taken in moonlight, with the 130mm f/6 apo refractor with the Hotech field flattener. Moonlight added the blue sky background. It is surrounded by stars of the Perseus OB Association. This is a stack of six 2-minute exposures. All with the Canon 6D MkII at ISO 800. Diffraction spikes added with Astronomy Tools actions.
The double star Mizar and Alcor in Ursa Major. While Mizar itself is a double, that close pair is not resolved here. This is a stack of three 4-minute exposures on July 8, 2018 with the 130mm Astro-Physics refractor at f/6 and Canon 6D MkII at ISO 800. Star spikes added with Astronomy Tools actions.
