Mercury
Taken by Kevin R. Witman on April 24, 2022 @
Cochranville, PA
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Camera Used: Unavailable Unavailable
Exposure Time: Unavailable
Aperture: Unavailable
ISO: Unavailable
Date Taken: 2022:05:08 11:06:27
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Details:
Mercury is a challenging object to image. To target this little planet, telescope collimation, alignment and set up were performed one day prior to imaging. Once Mercury is visible to the eye in the twilight, it's altitude is too low to the horizon to obtain a quality image. This composite was obtained when Mercury was 49 degrees in altitude with the Sun also high in the sky. The contrast between the disk of Mercury and the blue sky is somewhat subtle, enhancing the importance of good polar alignment. Visually, its half illuminated phase was quite apparent. I used a Celestron EDGE HD C9.25 SCT f/10 and a ZWO ASI290mm mono camera.
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