Director: Richard Bailey
JULY 2011
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JULY 2011
Rotation Nos. 2111, 2112, 2113
WHITE LIGHT
The month began as it ended, with three good NH AR’s in line across the disk. The NH was the most active throughout, with stronger AR’s . The SH had most activity between the 9th. and the 25th, but the AR’s did not match the strength of the larger ones in the NH.
Week 1. A row of NH AR’s 1242, 43 and 44 were on view on the 1st, 1244 near the CM , 42 head and 43 behind , at about the same distance. 1242 faded rapidly from the 2nd. Each had a sprinkling of small spots, up to 8 in 1243 recorded on the 1st,
Week 2. Began with with 1243 nearing the W limb still with about 7 small spots seen, and NH AR1245 had just come round in the E. Small NH AR1246 neared the W limb on the 9th. SH AR1247 was a line of small spots by the CM on the 10th.with small SH AR’s 1249 and 50 behind it.
Week 3. 5 small, scattered AR’s were seen on the 15th. NH AR1245, SH AR50, NH51, NH52 and SH54, 54 developing near the CM as a row of small spots recorded on the 19th. when 5 AR’s were again seen , with new NH AR1259 by the E limb.
Week 4. AR1259 and AR1254 decayed quickly on the 23rd. The Sun was almost blank on the 24th and 25th. just one very small SH AR each day
By the 28th, though activity built up with NH AR’s 1260 , 61 and 63 spread across the NE quadrant . They built up rapidly into a trio of strong AR’s each very different . Easternmost AR1263 had an Earth sized leader and close follower umbras, central AR1260 a similar leader with a gaggle of smaller spots
and ahead AR1261 was a cluster of mixed spots. All three had fine penumbral activity. On the 31st. 24 spots were recorded to AR1261, 13 to 60 and 9 to 63.
West of the trio was small AR1265 . A splendid end to the month.
Alan Heath saw good patches of faculae on most of the 30 days he observed . Brian Gordon-States had solar views on 28 days.
MDF 2.57 R 34.83
H-APLHA
Daily prominence, plaging and filament activity was good during the month , Some prominences were large and lengthy , with varied shapes and brightness , and ever changing patterns. Ian Lee saw some splendid W limb elongated prominences with complex structures on the 8th, on the 11th. by SH AR1249 very bright plaging and filaments, a striking dark one S of the AR. The strong NH AR’s at the end of the month had good filament and plage activity , plus flaring to AR1261.
Alan had observed flaring earlier in the month, on the 2nd. at 0950ut to NH AR 1243.
MDF 4.40
Once again the Section’s regular fine photographers and sketchers Peter Paice, Alan Clitherow, Brian Woosnam , Ian Lee and Paul Brierley ( not forgetting the Director’s efforts !! ) captured a good deal of the solar activity in great detail with their differing telescopes, filters and cameras. View a selection of them , and previous ones, on the Solar pages of the SPA website under Monthly Reports,
Observers : Alan Clitherow Malin Keal John Docherty Alan Heath
Ian Lee Lee Macdonald Brian Woosnam Ian Phelps Peter Paice Paul Brierley
Brian Gordon States and the Director.
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