Saturday, August 02, 2014

soaked in Achird (Blue Mountains)

Viewed η (eta) Cassiopeiae aka Achird aka Σ60 (Struve) in Wayne's new refractor, the Sky-Watcher 120mm 900mm apo.

I noted the B star at the 5 o'clock position. Very different magnitudes [ed: yep, delta 4]. Just barely visible at the low power. In my SkyTools software, I simulated the view by using a Tele Vue 101 'scope with an 18mm ocular. Then I spotted many components: A, B, D, E, F, G, and H. We tried the 6mm eyepiece and I thought it not bad!

Could not see the C star. The Object Information box was a little confusing. The AC button shows that C is magnitude 11.4; when selected directly from the component menu or hovered over on the Interactive Atlas, it is noted as mag 15+. Ah. So, very faint. And that meant I had seen all I could see in the small refractor.

Regardless, I had not looked at Achird so closely before. That was neat.

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