“Bogardus” , out of the glare.

12/9/18 Swadlincote.

A visit from a friend bearing his 120 ed Equinox and clearing dark skies. The clarity and sharpness of the views was astounding. One example which really opened out was the multiple “Bogardus”, theta (θ) Aurigae. Easily spotted by eye , put some magnification to it,

W. Hershel spotted the wide companion. There is a close companion which pops out of the primary diffraction disc.

The primary is 285 x brighter than Sol, giving a radius of x5.4 greater. It has a magnetic field a thousand times that of Earth. It’s 175 light years distant , the B companion( same size as Sol) is 185 AU distant and has a 1200 year orbit.The distant companion is not gravitationally bound.

It’s a delight to catch the close companion as the main star is 75 times brighter ! We caught this initially at very lower power , this is at x138,

Nick.

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