Log Book Entry No.132

Created: 20 Jan 2017 10:46:44

Last Revised: 20 Jan 2017 14:24:40

TomHyatt

MSci Skills Solar Limb PH3010

People Present:

• Tom Hyatt
• Luna Borella
• Rebecca Chafers
• Virgina d'Emilio
• Sam Youles

Conditions: Clear - No cloud

Setup:

• Covers Removed
• Solar Filters Added to main scope and finder scope
• Camera Fitted to rear of scope
• Dome Opened
• open IC Capture
• Aligned the sun using shadow and finder scope
• Focused using the edge of the sun at the equator
• Used histogram to check for saturation at the centre of the Sun (below 130(ish)pixel value at 1/350s exposure, gain 263)
• Sequence timer with one second intervals for 450 frames

• From edge of Sun moved away for 15secs at speed 3
• set tracking to terrestrial
• start taking frames

(index number not changed so started at 451)

• set of data taken with No Filter

Second set of data:

• Green Filter - Exposure 1/50 s
• Blue Filter - Exposure 1/15 s
• Red Filter - Exposure 1/60 s
• No Filter - Exposure 1/350 s

• Blue Filter - Exposure 1/12 s
• Green Filter - Exposure 1/45 s
• Red Filter - Exposure 1/55 s
• No Filter - Exposure 1/350 s

• Exposure 1/350s
• Exposure 1/150s
• Exposure 1/250s
• Exposure 1/450s
• Exposure 1/550s

Further Sunspot Images taken using exposure:1/200s

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