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2022-11-25

Condition: E6

Location: Home, Spearfish: 44.49, -103.87

10:29PM

Target: Θ 1 Orionis

Const: Orion

RaDec: 5h35m -5°23

Scope: ST80

Setting: 133x

Double: AB: 30°, AC: 60°, AD: 300°

Image

Target: Θ 2 Orionis

Const: Orion

RaDec: 5h35m -5°25

Scope: ST80

Setting: 133x

Double: AB: 90°

Took a while to get my bearings and identify each star in the area. Lots of things going on here! Beautiful observations, it's cool to see some nebulosity in the background while studying doubles!

_My recorded PA's above for Θ 1 are off. During observation, I got Θ 1 A mixed up with Θ 1 C, so my PA's recorded are assuming that C was the primary. At the time C seemed brighter, and perhaps I just assumed that it was the primary?_

10:46PM

Target: ι Orionis

Const: Orion

RaDec: 5h35m -5°55

Scope: ST80

Setting: 57x, AV

Double: AB: 120°

Image

AV was required to see the sibling. Even then, it would only "pop" into detection for a moment.

Target: Struve 747

Const: Orion

RaDec: 5h35m -6°

Scope: ST80

Setting: 57x

Double: AB: 220°

There were three faint "glimmers" around Struve 747 that I thought could be the sibling. After closer examination only the glimmer around 120° and 220° were at the right distance.

11:03PM

Target: ζ Orionis

Const: Orion

RaDec: 5h40m -1°57

Scope: ST80

Setting: 57x, 133x

Double: AB: 15°, AC: 140°

Image

The further sibling was found quickly. I had a ton of trouble with the closer sibling. Trying all the methods I could think of to get it to show up failed. I ended up backing off my zoom a bit and micro focusing. Guessed incorrectly first as I thought I saw the closer double around 290°.

11:28PM

Target: M 78

Const: Orion

RaDec: 5h46m 0°3

Scope: ST80

Setting: 40x

Image

Faint and small, but AV isn't required. There is an area of "noise" and glints of light scattered in the midst of the "noise". I could of easily mistaken it for a tight star cluster.

11:40PM

Target: M 41

Const: Canis Major

RaDec: 6h47m -20°44

Scope: ST80

Setting: 36x

Image

Beautiful and spread out. I can see a smaller cluster just to the south-west. Not sure if it's a separate cluster, or part of this one. I can almost make out the shape of a question mark with some of brighter stars in the middle of the cluster.

** 2022-12 December