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Glenn Mitchell
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- Glenn Mitchell
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Upon reflection (pardon the pun), I believe I understand why you mentioned the reflection from the front of the filter back toward the scope. The dichroic nature of the filters and the 6nm bandpass means nearly all of the light is reflected back. M…
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Thanks, Adam, for clarifying that the reflection of light between the filter and the rear scope element can also be significant. The reason I thought reflections between filter and sensor cover might be more significant is the angle of reflection t…
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It seems to me that there is no ideal exposure length for DSO. Faint nebulosity is one concern. With galaxies there is core detail and detail in dust lanes, etc. With globular clusters there is detail in the width and height as well as core. I find…