Cassiopeia Observatory

iPhone: Moon Crater Janssen

Posted: 17 January 2013

The observatory was opened Wednesday, 16 January 2013, at 1808 MST, 50°F. At 1814 MST, viewed Jupiter, 77X. Three moons were visible. I switched to the 2" 9mm 100° eyepiece (222X) and took a tour of the lunar terminator. I liked the view of the Crater Janssen. I set up for iPhone 4 afocal imaging using the 8" LX200-ACF with the MX-1 Afocal Adapter.

The moon captured at 77X using the iOS Camera app:

This is Crater Janssen, afocal 222X, with the Camera app, cropped somewhat from the full-frame image:

At 1843 MST, resumed lunar observing, 222X. By 1853 MST, seeing was deteriorating even though the moon was still high in the sky. Switched back to viewing at 77X. At 1857 MST, slewed to Jupiter. By 1901 MST, it was evident that seeing conditions were getting worse. Began closing up for the night.

The observatory was closed at 1908 MST, 43°F.

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