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Old 01-03-2018, 11:09 PM
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Tinderboxsky (Steve)
I can see clearly now ...

Tinderboxsky is offline
 
Join Date: Feb 2012
Location: Kingston TAS
Posts: 1,094
At last, a clear night here south of Hobart so tackled Orion doubles despite the bright near full Moon.
Scope: Vixen NA140SS refractor with LVW eyepieces: 8mm-100X, 5mm-160X and 3.5mm-229X.
Transparency looked good - difficult to tell with only one day to a full Moon. Seeing was good, say 9 out of 10. The more difficult targets were at just over 30 degrees elevation unfortunately, which I thought might be a problem.

Rigel @ 100X - straight forward and demonstrated that seeing was looking okay. It is a fine sight; bright Rigel and the companion a brilliant spot. The Vixen throws up some false blue on such bright star, so I won’t try to report a colour.

31 Orionis @ 100X - Primary a yellow/orange with the companion a faint speck.

Rho Orionis @ 100X - Primary a light yellow and the companion a clear very distinct pin point.

Sigma Orionis @ 100X - this is one of my favourite FOV's. The bright primary dominates the grouping, appearing whitish with a hint of yellow. Companion C was faint but clear. The brighter companions D & E appeared pale white with a greenish/blue tinge. The nearby Struve 761 close double in the same FOV was clear. A number of other stars completed the field.

Zeta (Alnitak) @ 100X - appeared elongated with hints of a figure “8” with regular moments of better seeing. Colour appeared white-blue. The faint wide companion C was clear. There was a clear, steady split at 160X A & B.

32 Orionis @ 160X - appeared as definite figure “8” with regular clear splits in moments of better seeing, colour pale blue-white. Clear, steady split at 229X.

52 Orionis @ 160X - appeared as a tight figure “8”, colour pale yellow-white. Difficult but clear, steady split @ 229X.

So, a successful night. Despite my earlier concerns that the elevations might be too low, I was able to split all of the targets. Thanks for the list Joe.

Last edited by Tinderboxsky; 02-03-2018 at 09:51 AM. Reason: Correction
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