Beta Monocerotis

Last night I visited an old friend, which I had not seen for a long time, Beta Monocerotis, a beautiful triple of bright stars in Monoceros. I used a 100mm refractor with a 7mm eyepiece. The magnification is 143x and the true field of view is about 21'. Multiple stars like this are real beauties in any telescope. Be sure to look out for them! Here's a sketch with an eyepiece-impression, north is up and west is to the left.




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Sigma Orion and Struve 761

Last night it was very stable so I had a look at a few double stars. This one was particularly beautiful, a triple and a double in one field of view. In the centre you see the triple Sigma Orionis, and the close and faint double to the upper left of Sigma is Struve 761, an almost equally bright couple of stars. The observation was made with a Tal 100RS refractor and a 10mm Vixen Lanthanum eyepiece. North is up and west is to the left

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Alpha Librae and Jupiter through binoculars

This year I started working on the Astromical League's Binocular Double Star Observing Program. I hope to complete this list, including sketches, within a year or two. Its about 120 double's so that should be something nice to try with my 10x70 and 15x80.

Here is a sketch of one of them, Alpha Libra, together with Jupiter and three of its moons. The sketch was made on the 7th of May 2018, at 2.20 local time. South is up, and east is to the left. Alpha Librae is the double star near the rim on the right. Jupiter is visible with Callisto, Io an Europe. Ganymede is to close to Jupiter to be split with the Fujinon 10x70. The yellowish star to the southeast of Jupiter is Nu Librae. You only can get these beautiful wide angle fields in binoculars. The Fujinon 10x70 has a 5.3 degree field of view.


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