Date (U.T.): February 7, 2010
Time (U.T.): 03:30-04:30
CM (Degrees West): 019.5*-034.2*
Ls 048.3*, De 013.5*, Ds 018.3*, p 100%, 13.9"
Instrument: 9-inch (23-cm) F/13.5 Maksutov-Cassegrain
Magnification: 295x and 388x
Filters (Wratten): 30 (Magenta) and 80 (Blue)
Seeing (1-10): 5 (moments of 7), Antoniadi (I-V): III
Transparency (1-6): 5
03:45 U.T. (CM 023.2*W, Wratten 30 (Magenta)): The North Polar Cap (NPC) was brilliant (10/10) and has reduced in size (diameter) significantly compared to previous observations. The NPC was surrounded by a dark (3/10) composed of Ortygia and Mare Boreum. Mare Acidalium is visible following the central meridian (CM) and appears dark to dusky (3-4/10) with condensations noted within. Achillis Pons appeared bright (7/10) with a haze overlying it. Niliacus Lacus appeared dark to dusky (3-4) with Nilokeras (3-4/10) projecting from it's following border. Idaeus Fons appeared as a dark to dusky (3-4/10) "knob" projecting northward from Nilokeras. Lunae Lacus appears to be obscured by a very bright (8/10) haze over the following (morning) limb. Chryse-Xanthe appears bright (7/10) without detail visible within it. Xenius Fretum appears over Cydonia (7/10) as a triangular-shaped dusky (4/10) albedo feature. Sinus Sabaeus and Sinus Meridiani appear dark to dusky (3-4/10) over the South preceding (Sp) limb. Margaritifer Sinus appears a dark to dusky (3-4/10) triangular-shaped albedo feature on the CM with Oxia Palus (4/10) visible south of it. Mare Erythraeum appeared dark to dusky (3-4/10) and mottled with Pyrrhae Regio as a bright (7/10) area over it's center. Aurorae Sinus appeared dark to dusky (3-4/10) towards the following limb. The preceding (evening) and southern limb appeared very bright (8/10). The following (morning) limb appeared very to extremely bright (8-9/10).
A digital imaged produced in Pixelator.