Sarcoma
发表于 2025-3-26 21:43:15
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序曲
发表于 2025-3-27 01:44:49
Book 2015of solar phenomena. Explanations of what to expect visually from white light, Hydrogen-alpha and Calcium K filters are provided for those new to solar observing, along with essential tips on equipment, observing techniques and the practicalities of drawing at the eyepiece. Time-honored, traditional
terazosin
发表于 2025-3-27 07:35:05
Introduction to Solar Observing and Sketching, never the same twice. Regardless of where your interests lie, from the occasional view to daily sunspot tracking, or rendering the subtle complexity of prominences, the following techniques, hints and tips will help guide you to accurately sketch the Sun’s ever-evolving features.
诱拐
发表于 2025-3-27 12:53:15
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infatuation
发表于 2025-3-27 13:43:07
White Light Filters, surface, which is not really a surface at all because it is composed of hot gas 4500–6000 degrees Kelvin. Within this shell a mere few hundred kilometers deep, we can view sunspots, granulation, and faculae. Using simple optical projection techniques or a solar filter, we can observe and record the
conception
发表于 2025-3-27 20:33:26
Solar Projection,ervers to simultaneously sketch the Sun in white light. Freehand drawing and sunspot tracings can be done over the course of several days to document the evolution and positions of active regions. This chapter provides techniques best suited for these types of projection methods.
Exposition
发表于 2025-3-27 23:23:18
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ALE
发表于 2025-3-28 02:43:55
Calcium K Filters,ndicates strong magnetic activity in the chromosphere and is associated with the chromospheric network. A CaK filter isolates the layer of the Sun that is below and slightly cooler than that observed at the Hydrogen-alpha wavelength of 656.3 nm.
conscience
发表于 2025-3-28 09:23:37
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Melatonin
发表于 2025-3-28 13:48:49
Transits, events are relatively rare, it is necessary to plan well in advance if you wish to sketch them. The benefit you will reap is the wonderful opportunity to witness a transit first hand, and then come away with a unique record of your observation.