Aries

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Aries

Postby Aratus » Sat Sep 24, 2016 11:13 pm

The constellation of Aries is getting to a nice height before midnight at the moment. The three brightest stars are worth looking at through a telescope because they are very different. Hamal (alpha) is a bright orange star. Sheratan (beta) is a slightly less bright, white star. Mesarthim (gamma) is 2 dimmer white stars of the same magnitude, very close together. I imaged all three and put them on to one image. Hamal and Sheratan have the same exposure. I cut down Mesarthim's exposure to show the 2 individual stars.
Image

The Mesarthim stars are very close together, (7 arc seconds), but can be split with even a very small telescope. I could just about do it with my old childhood 40mm refractor. The 2 stars are around magnitude 4.5, but the combined brightness is 3.9.
I use an 11" Celestron SCT (CPC 1100) on an equatorial wedge, housed in a 2.2m Pulsar observatory. I use a ZWO ASI1600MC and Canon 500D for imaging.
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Re: Aries

Postby The Man with the Corrugated Iron Roof » Thu Oct 27, 2016 9:39 pm

Nice shot. I consider double star shots rather neglected. Also, Aries isn't photographed very often.
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