DMK21AU618.AS, 250/1600 newtonian and 2.5x Barlow, Baader filters R,G,B and IR-pass
Gurk, 9th April 2012

The first version shows Mars done with drizzling in Registax5. The second version below is without drizzling.
The bright spot in the middle is Elysium Mons. Its diameter is about 240 km, with a summit caldera about 14 km across. Elysium Mons was discovered in 1972 in images returned by the Mariner 9 orbiter.