Clavius & Tycho


Date & Time: Mar 16 2019, 23:40 JST(+0900), Mosaic of 2flames
Optical: TAKAHASHI 12.5cm(4.9") fluorite refractor
with Televue Powermate 2.5× (Syn. f=2500mm, F20.0)
Auto-guided with VIXEN ATLUX Equatorial
Camera: CELESTRON Skyris445C with IDAS IR-cut filter
Location: Ooizumi. Hokuto city, Yamanashi pref.

Camera Settings: 30 flames/sec.×6sec., Exp....1/50sec
160 flames stacked & Wavelet process with Registax6


The crater of Clavius, positioned in the southern crater-crowded area, has a diameter of about 225km, one of the largest craters in the Earth side of moon. You can detect the crater only with portable binoculars. The crater has a rim being gentle; it's considered that Clavius might be a comparatively aged one.
You can find the crater of Tycho with a diameter of 85km at the north of Clavius. This crater is fairly new one because it has clear and steep outline. The Tycho has very bright ray that can be seen only about full moon. The Tycho's ray vanishes almost all craters on the outskirts. On January 19th 1968, a moon probe of Surveyor 7 landed on the west edge of rim of Tycho, took over 20 thousand pictures and gathered much geological data.

Gazetteer
Index Map
INDEXNAMECrater's Diameter
1Clavius225km
2Longomontanus145km
3Tycho85km
4Wilhelm107km
5Scheiner100km
6Blancanus105km
7Klaproth119km
8Maginus163km
9Sasserides90km
10Gauricus79km
11Wurzelbauer88km
12Moretus114km
13Deslandres234km



Around Recta, RUPES
Around Clavius

Copyright(c) 2019 by Naoyuki Kurita, All rights reserved.
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