28.2.19

28th Feb 2019: Solar

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Thursday: Cloudy start but cleared to thinner, high cloud.

11.20: 51/45F Blank disk again in white light. Sun still covered in thin, high cloud. Made a crude, taped cardboard, 6" aperture stop for the 7" for f/14 equivalent to f/19 with R35. No advantage.

11.25 H-a: One detached prom at my 3.00 and a dark, linear speck on the disk at 12..00 about 1/4 way in. Could be a tiny filament? Seemed to have dissolved but is was just cloud obscuring the detail. A brightening produced a small dark line leaning to the right of vertical. I hoped to tease it out in WL+SC but there's nothing there.

11.55 65/48F Add a new, short filament at about 6.00. Dark smudges around 10-11 on Gong. Look lighter to me.

12.15 60/47 The 12.00 'filament' becoming broader and softer. The 6.00 is getting smaller. 3.00 prom shrinking.

12.27 57/48F  Tried 5" and 4" aperture stops on the 6". Both worse than 6". Obvious softness and loss of surface texture and detail with 4". Using 20mm for 60x each time. Much prefer full aperture. Small proms at 2.00 and 3.00. Bright spicule at 10.00.

14.40 57/50F, tiny proms scattered around the solar limb. Small, short filament at about 10.00.

Have finally heard from TS about my misaligned binoviewers. They are sending me a replacement pair. Probably here next week, with any luck. They say they are struggling with staff shortages and inundated with emails.

14.45 58/51F Tried a 4"aperture stop on the 7". No change. Just dimmer. A visible something-or-other, in white light, would be nice. Anything to confirm I really am looking at the sun and not a featureless lump.




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