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| Object/type: | Sun / sun spot |
| Filter: | Baader solar filter |
| constellation: | |
| date/time/place: | June 29, 2002 / 08:00 / Bangkok |
| trans'y/seeing/l-poll: | |
| telescope: | Newtonian 4.5", f8.8 with full aperture solar filter |
| eyepieces/power: | 25,10,6 mm / 40,100,167X |
| sky atlas page: | |
Big sun spot at west limb very clear and sharp edges of umbra / penumbra.
White features can be observed close to the limb which is darker tone.
They are Faculae, the highly active region along the sun magnetic line.
It is easily seen near the rim according to "Rim darkening effect".
Can not seen granulation at low & high power.
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