Sunspots on August 26 2023
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Sunspots on August 26 2023
Sketch.
At the low magnification, the size of the large spot is slightly exaggerated, I see afterwards. The separate sketch of the large spot is more lifelike.
The Wolf number here is multi-interpretable. It depends on whether you count the spots on the left of the image separately or as one group. If I were to count as I did years ago I come up with 6 groups. (which is already 60) and 11 individual spots, together 71.
At higher magnification of, say, just the large group, you end up higher. Hence the point is to always count with the same instrument and the same magnification.
Granulation was more or less just around the corner. Earlier at 10.00, I did see it briefly, but a lot of cloud cover and so I had to postpone the sketch. The sketch was done at noon, it was clearly warmer then, more turbulence and granulation not visible any more.
GrabnGo on Alt/AZ : *SW Startravel 102 F/5 refractor( widefield, Sun, push-to), *OMC140 Maksutov F/14.3 ( planets).
Most used Eyepieces: *Panoptic 24, *Morpheus 14, *Leica ASPH zoom, *Zeiss barlow, *Pentax XO5.
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Re: Sunspots on August 26 2023
REFRACTOR , TS-Optics Doublet SD-APO 125 mm f/7.8 . Lunt 80mm MT Ha Doublet Refractor .
EYEPIECES, Delos , Delite and 26mm Nagler t5 , 2 zoom Svbony 7-21 , Orion Premium Linear BinoViewer .
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Re: Sunspots on August 26 2023
W/L scope Williams Optic Megrez 110mm / Lunt herschel wedge .
Night scope Celestron 9.25 XLT
Mounts HEQ6 , HEQ5 , Losmandy G8
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Re: Sunspots on August 26 2023
Refractors: ES AR152 f/6.5 Achromat on Twilight II, Celestron 102mm XLT f/9.8 on Celestron Heavy Duty Alt Az mount, KOWA 90mm spotting scope
Binoculars: Celestron SkyMaster 15x70, Bushnell 10x50
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Re: Sunspots on August 26 2023
Mounts: SW: SkyTee2, AzGTi; iOptron: AZMP; ES: Twilight I; Bresser: EXOS2; UA: MicroStar.
Binos: APM: 100-90 APO; Canon: IS 15x50; Orion: Binoviewer, LG II 15x70, WV 10x50, Nikon: AE 16x50, 10x50, 8x40.
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Re: Sunspots on August 26 2023
GrabnGo on Alt/AZ : *SW Startravel 102 F/5 refractor( widefield, Sun, push-to), *OMC140 Maksutov F/14.3 ( planets).
Most used Eyepieces: *Panoptic 24, *Morpheus 14, *Leica ASPH zoom, *Zeiss barlow, *Pentax XO5.
Commonly used bino's : *Jena 10X50 , * Canon 10X30 IS, *Swarovski Habicht 7X42, * Celestron 15X70, *Kasai 2.3X40
Rijswijk Public Observatory: * Astro-Physics Starfire 130 f/8, * 6 inch Newton, * C9.25, * Meade 14 inch LX600 ACF, *Lunt.
Amateur astronomer since 1970.
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Re: Sunspots on August 26 2023
Every group gets ten points. Every individual spot gets one point.
A single spot counts as a group as well. So one single spot gets 10 + 1 = 11 points. ( for instance in the sketch the group numbers 2,3,6)
Two small single spots close together count as one group, as you may assume there is a positive and a negative pole. This is where the "subjective interpretation factor" comes in. ( in the sketch group number 1)
There is no difference in counting between a big dark spot with a penumbra and a tiny black speck, als long as they are both single.
GrabnGo on Alt/AZ : *SW Startravel 102 F/5 refractor( widefield, Sun, push-to), *OMC140 Maksutov F/14.3 ( planets).
Most used Eyepieces: *Panoptic 24, *Morpheus 14, *Leica ASPH zoom, *Zeiss barlow, *Pentax XO5.
Commonly used bino's : *Jena 10X50 , * Canon 10X30 IS, *Swarovski Habicht 7X42, * Celestron 15X70, *Kasai 2.3X40
Rijswijk Public Observatory: * Astro-Physics Starfire 130 f/8, * 6 inch Newton, * C9.25, * Meade 14 inch LX600 ACF, *Lunt.
Amateur astronomer since 1970.
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Re: Sunspots on August 26 2023
Graeme
Celestron 9.25 f10 SCT, f6.3FR, CGX. Sky-Watcher Evostar-120, HEQ5
ASI1600MM Pro, ASI294MC Pro, ASI224MC
ZWO EFW, ZWO OAG, ASI220MM Mini.
APM 11x70 ED APO Binoculars.
https://www.averywayobservatory.co.uk/
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Re: Sunspots on August 26 2023
Wonderful presentation of Sunspots on August, 26/2023.
Thanks for sharing
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