Theta 1 Orionis (Struve 748) - The Trapezium

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October 18, 2006: To help provide a consistent style for my double star sketches, the above sketch is a digital update to the original sketch.

Observation Notes:

Even in poor seeing, the trapezium is spectacular. The A-D stars were simple to spot, with the C star being the brightest. I stared long enough that occasional moments of better seeing gave me a peek at the E star; but the F star wasn't there at all.

SubjectDouble/Multiple Star: Theta 1 Orion / 41-Ori [ALDS23]
ClassificationMultiple Star
PositionOrion [RA: 05:35.3 / Dec: -05:23]*
Magnitudes*6.7, 7.9, 5.1, 6.7
Position Angle*31�, 132�, 96�
Date/Time01/17/05 - 10:25 PM
Observing Loc.Flagstaff, AZ - Home
InstrumentOrion SVP 6LT Reflector (150 mm dia./1200 mm F/L)
Eyepieces/Mag.10 mm + 2X Barlow (240X)
ConditionsClear, cool (39�F), 1st quarter Moon
TransparencyMag 5.2

*Based on published data.

1 Comment

An absolutely lovely sketch!!
Best wishes

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This page contains a single entry by Jeremy Perez published on January 17, 2005 10:25 PM.

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Theta 2 Orionis (Struve 16) is the next entry in this blog.

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