28 December 2007 CHr Note
C E HERNANDEZ's
Observation of Mars on 28 December 2007

  λ=009°Ls,  ( ω=221°, 230°W,   φ=01°N ),   δ=15.7",   ι=04°

Instrument: 9" (23cm) F/13.5 Maksutov-Cassegrain
Magnification: 163×, 273×, 359×
Filters (Wratten): 38A
Seeing (1-10): 6-7, Antoniadi (I-V): II
Transparency (1-6): 5

Notes:
01:20 U.T. (Left image, ω=213°W, IL): The South Polar Region (SPR) appears obscured by a very bright to extremely bright (8-9/10). Mare Australe appears dusky to shaded (4-6/10) north of the haze. Electris, Eridania, and Ausonia appear to be obscured by a bright to very bright (7-8/10) haze. Mare Cimmerium appears dark to dusky (3-4/10) and mottled. The northern border of Mare Cimmerium contains projections (Laestrygonum Sinus, Cyclopum Sinus, and Cerberi Sinus, preceding to following). "Valhalla" was visible north of Mare Cimmerium as a dusky (4/10) band. Hesperia appears as a bright (7/10) diagonal strip between Mare Cimmerium and Mare Tyrrhenum. Mare Tyrrhenum appears dark to shaded (partially obscured by a very bright (8/10) morning limb haze (MLH). Zephyria, Aeolis, Aethiopis, and Aetheria appears bright (7/10). Amazonis and Arcadia appear dusky to shaded (4-6/10) and mottled. A very bright (8/10) orographic cloud is visible over Olympus Mons over the north-preceding (evening) limb. Trivium Charontis, Phlegra, and Azania appear dark to dull (3-5/10). The Propontis Complex (Propontis I and II, Castorius Lacus, and Euxinus Lacus) appears dark to dusky (3-4/10). Elysium appears bright with a very bright (8/10) cloud over it's north-preceding sector. Panchaia appears bright (7/10) and Lemuria (dusky (4/10). The Hyblaeus Extension appears dark to dull (3-5/10) following Elysium. Syrtis Major appears to be obscured the very bright (8/10) MLH. The North Polar Cap (NPC) appears brilliant (10/10) along the northern limb.

01:50 U.T. (Right image, ω=220°W, Wratten 38A (Blue) filter): Mare Cimmerium appears dusky (4/10). The southern limb, preceding (evening) limb, northern limb, and following (morning) limb appear very bright (8/10). A very bright (8/10) orographic cloud appear over Olympus Mons over the preceding limb. A very bright (8/10) cloud appears over Elysium.

Observer:   Carlos E HERNANDEZ,   Miami   FL


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