Mare Orientale, 2 January 2005

The lunar libration during early January 2005 presented a good opportunity to image Mare Orientale, the impact basin centred at 95° W and often out of view. In the image below, obtained early on 2 January 2005, when the Moon was 21 days old, north is to the right and west is up. Mare Orientale is the dark area just in front of the limb at the 10 o' clock position. Rook Mountains can just be made out behind the mare and, more clearly, as the jagged white features on the limb to either side. Further to either side on the limb are similar features - the Cordillera Mountains. The dark features of the Lacus Veris and Lacus Autumni can be seen in front and to the right of the mare. Also of note are the crater with rays towards the front left of the image (Byrgius) and the dark oval of the Grimaldi basin. The large dark feature is part of Oceanus Procellarum.

The lower image shows the an area from the upper image, including the mare, after sharpening with the blind deconvolution program Unshake (v 1.4). Further information about this program is available at the Unshake homepage.

Image of SW limb including Mare Orientale Cropped from a (nominal) 4M pixel image of entire visible lunar surface. Obtained at 01:30 UT. 150 mm F/6 Newtonian 'scope, 25 mm Plössl eyepiece, Fujifilm Finepix A405 camera held afocally with Steadypix mount. Self-timer used to minimise camera shake. Exposure locked for lunar surface prior to exposure.
mare area of image sharpened Area of the upper image after sharpening by blind deconvolution using Unshake v1.4. 'Scenic' quality and noise of '2' used for an area of the image away from the limb and the Byrgius rays.

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Last updated: 3 January 2005