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Tuesday 48/43F [in/out] very thick mist clearing to bright sunshine. Patches of thin, high cloud crossing from the NW. Enough to diminish the light on the observatory wall at times.
11.30am Nothing visible in white light at 68x. 180/12 + 2" Lacerta prism + Baader Solar Continuum + Polarizing. No visible thermal issues.
Several proms in H-a at my 2, 9 & 11.00. The 11.00 is a twisted loop seen almost edge on. 150/8 [120/10] 60x with modified PST & TS star diagonal.
Several proms in H-a at my 2, 9 & 11.00. The 11.00 is a twisted loop seen almost edge on. 150/8 [120/10] 60x with modified PST & TS star diagonal.
More even surface texture must mean better seeing today. Allied with the new [correct] 200mm etalon spacing inside focus. I can actually see fine texture over the entire disk. Which is a first!
Just a hint of a short filament above center, right, but otherwise nothing very noticeable on the disk. Seeing the texture is almost like using averted vision. Or is it it curvature of the field at the focal plane causing difficulty in the center of the disk? The PST etalon?
12.20 54/49F The lack of a binoviewer is emphasizing my [eye] floaters!
12.45 Just as I was set up for some H-a imaging it clouded over!
13.0 Cloud has cleared to reveal a tall leaning prom at my 6.30 with a small companion. An eaqually tall smudge stands slight further away along the limb
Gong isn't showing anything yet so I can't confirm the correct orientation.
14.30 Back after lunch. Had to do a manual flip. AWR wanted to go the wrong way, via North, again. Proms still visible. The Lacerta prism heat sink remains only lukewarm after hours of direct sunlight from the 7".
15.50 60/53F Sun now only at 13° altitude. Struggling for sharp surface texture in the middle of the disk but still very sharp proms. A lovely, high arch at my 8.00. Tried a 15mm for 80x but a bit soft.
Checked around the inside of the dome at intervals with a laser guided "gun" thermometer. Maxed out at 100F on panels directly pointing at the sun in the early afternoon. The temperature dropped rapidly the further away they faced. With rear panels in shade matching ambient outdoor air temperatures.
Downside with my east of the pier computer desk is sun shining through the slit now that it has risen well above winter levels. I may need to seek the shade of the southern obs. wall.
16.10 Lost the sun behind the trees.
Just a hint of a short filament above center, right, but otherwise nothing very noticeable on the disk. Seeing the texture is almost like using averted vision. Or is it it curvature of the field at the focal plane causing difficulty in the center of the disk? The PST etalon?
12.20 54/49F The lack of a binoviewer is emphasizing my [eye] floaters!
12.45 Just as I was set up for some H-a imaging it clouded over!
13.0 Cloud has cleared to reveal a tall leaning prom at my 6.30 with a small companion. An eaqually tall smudge stands slight further away along the limb
Gong isn't showing anything yet so I can't confirm the correct orientation.
14.30 Back after lunch. Had to do a manual flip. AWR wanted to go the wrong way, via North, again. Proms still visible. The Lacerta prism heat sink remains only lukewarm after hours of direct sunlight from the 7".
15.50 60/53F Sun now only at 13° altitude. Struggling for sharp surface texture in the middle of the disk but still very sharp proms. A lovely, high arch at my 8.00. Tried a 15mm for 80x but a bit soft.
Checked around the inside of the dome at intervals with a laser guided "gun" thermometer. Maxed out at 100F on panels directly pointing at the sun in the early afternoon. The temperature dropped rapidly the further away they faced. With rear panels in shade matching ambient outdoor air temperatures.
Downside with my east of the pier computer desk is sun shining through the slit now that it has risen well above winter levels. I may need to seek the shade of the southern obs. wall.
16.10 Lost the sun behind the trees.
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