Description
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Specialist high quality Everwin # 80A Blue Filter
Specifically designed for increased performance in observation of planetary details
The Moon – enhance lunar surface detail
Jupiter – enhances the boundaries between the reddish belts and adjacent bright zones. Plus view the Great Red Spot with greater detail
Mars – observe the planet during the phenomenon known as the blue or violet clearing, when we can see Martian features in blue or violet light for a period of several days. Plus study surface features and polar caps
Mercury – bring out dusky surface markings at twilight when the planet is near the horizon
Saturn – reveal low-contrast features between the belts and zones
Venus – increase the contrast of dark shadings in upper Venusian clouds
Comets – bring out the best definition in comet gas tails
This is a high quality 1.25 inch telescope filter designed to thread directly to all standard 1.25 inch eyepieces and also 1.25 inch star diagonals
