Jenssen and Petavius Craters 15 Feb 2013


I managed to get started fairly early (6:00pm) on Friday 15th February. The early start is also helped by the use of an Astronomik Planet IR Pro 807 filter. Concentrating around the Lower Easter limb, the first target was Jenssen Crater. This is a very old hexagonal shaped crater which is split by a major rille (Rimae Jenssen) as well as being truncated by newer more prominent craters such as Fabricius and Metius. There are also some interesting valley structures nearby (Vallis Rheita) which has a radial association with the nearby Mare Nectaris.

These images were collected using a DMK 21AU04.AS Mono camera at 60 frames per second. As already mention, a IR Pro 807nm filter was used to significantly effect the seeing to the better. Scope used was the usual Meade 12″ LX200R at its native f10 giving a focal length of 3042mm. Images captured using Imaging Source IC Capture, processing was through AVIStack2, with a small adjustment to curves with CS3. Stacking used 800 of the 3072 frames captured.

Please hover your mouse over the image for a description of the view.

The second image of the evening is of the crater Petavius which is a is a large lunar impact crater located to the southeast of the Mare Fecunditatis, near the southeastern lunar limb. The convex crater floor has been resurfaced by lava flow, and displays a rille system named the Rimae Petavius. The large central mountains are a prominent formation with multiple peaks. Image creation as above, but used 600 of 1800 frames taken at 30 fps.


Thanks for looking, Steve