Observation by John Arnold: Evolution of a filament near AR4551

Uploaded by

John Arnold

Observer

John Arnold

Observed

2026 Oct 11 - 09:31

Uploaded

2026 Oct 20 - 15:50

Objects

The Sun

Equipment

Lunt 50 THa, eyepiece projection to give ca. f/16, ASI178MM camera

Exposure

exp time. 0.84 msec, each panel is stack of best 250 frames from 10,000-frame video

Location

Leeds

Target name

AR4551 and nearby filament

Title

Evolution of a filament near AR4551

About this image

Images from the 11, 14, 16, 17 and 18 October, and taken between 0900 and 1000 UT each day

Files associated with this observation

11-18 AR4551 with filament.jpg (2.9 MB)

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Graham Winstanley

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