Around Nectaris, MARE


Date & Time: Sep 15 2011, 26:50, 26:51 JST(+0900), Record Time: 30sec. each
Mosaic of 2 flames
Optical: Kasai 20cm(7.9") Newtonian(NERO-200DX), afocal method with PanOptic 35mm eyepiece
Synthesized focal length f=2176mm (equivalent f=14790mm in 35mm film format)
Auto-guided with TAKAHASHI EM-200 Equatorial
Digital Video Camera: Canon iVIS HF-S10
Location: Hitachi city, Ibaraki pref.

Camera Settings: Mode...MXP(17Mbps), Program Auto
Lens...f=64mm (equivalent f=435mm in 35mm film format), Stop: F2.8
600 & 340 flames stacked & wavelet processed with Registax6


A round lunar sea in the eastern part is called Nectaris, MARE. This Necatris, MARE was completed by basaltic lava that filled a huge hollow of a gigantic meteorite collision. The especially large hollows have been called Basins, and that of this lunar sea is called "Nectaris Basin".
The Nectaris Basin has a double-ring structure, inside and outside rings have diameters of 400km and 800km, respectively. And the Nectaris, MARE has been formed the lava fills only inside ring. You can see the exterior ring clearly in southwest part; this outline has a name of Altai, RUPUS (Bluff of Altai). And you can see a crater of Fracastorius with a diameter of 124km adjoining in southern edge of the sea. The crater is poured about half by dark lava, and looks like an inlet facing to the Nectaris, MARE.

Gazetteer
Index Map
INDEXNAMECrater's Diameter
1Piccolomini88km
2Fracastorius124km
3Beaumont53km
4Catharina100km
5Cyrillus98km
6Theophilus100km
7Rothmann42km
8Zagut84km
9Tacitus40km
10Kant32km
11Madler30km
12Colombo76km
13Santbech64km
ANectaris, MARE-
BAltai, RUPUS-
CPyrenaei, MONTES-
DFecunditatis, MARE-



Around Ariadaeus, RIMA
Around Taurus, MONTES

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