2022-07-20

• Condition: E6
• Location: Home, Spearfish: 44.49, -103.87

9:45PM

• Target: β Scorpii[1]
• Const: Scorpius
• RaDec: 16h05m -19°48
• Type: Star (Double)[2]
• Scope: ST80
• Setting: 57x
• Double: AB: 20°
• Image: ../images/2022-7-20_BetaScorpii.jpg[3]

Nice and easy split. Took a while to find Scorpius since I'm unfamiliar with it. Had to catch this session while the top of Scorpius was between a tree and Butch's house. Primary appears yellow.

[1] β Scorpii (ID)

[2] Star (Double) (ID)

[3] ../images/2022-7-20_BetaScorpii.jpg

9:50PM

• Target: ν Scorpii[1]
• Const: Scorpius
• RaDec: 16h12m -19°28
• Type: Star (Double)[2]
• Scope: ST80
• Setting: 57x
• Double: AB: 350°
• Image: ../images/2022-7-20_NuScorpii.jpg[3]

Easy split. Primary looks white / blue.

[1] ν Scorpii (ID)

[2] Star (Double) (ID)

[3] ../images/2022-7-20_NuScorpii.jpg

10:05PM

• Target: ξ Scorpii[1]
• Const: Scorpius
• RaDec: 16h04m -11°22
• Type: Star (Double)[2]
• Scope: ST80
• Setting: 150x
• Double: AB: 45°
• Image: ../images/2022-7-20_XiScorpii_Struve1999.jpg[3]

• Target: Struve 1999[4]
• Const: Scorpius
• RaDec: 16h04m -11°27
• Type: Star (Double)[2]
• Scope: ST80
• Setting: 150x
• Double: AB: 90°

A double-double! ξ Scorpii's sibling is faint and hard to see. Struve 1999 has both stars appear at very similar magnitudes.

[1] ξ Scorpii (ID)

[2] Star (Double) (ID)

[3] ../images/2022-7-20_XiScorpii_Struve1999.jpg

[4] Struve 1999 (ID)

10:15PM

• Target: M 4[1]
• Const: Scorpius
• RaDec: 16h23m -26°32
• Type: Globular Cluster
• Scope: ST80
• Setting: 40x
• Image: ../images/2022-7-20_M4.jpg[2]

Faint. This is likely from being so low on the horizon. AV is helping discern the shape, but I'm noticing more variation from AV than usual. Depending on where I look using AV, the target appears either circular, or a sharp vertical oval. I've seen variation when using AV before, but nothing like this!

[1] M 4 (ID)

[2] ../images/2022-7-20_M4.jpg