Observatoire de l'Institut d'Optique Graduate School
Antenne de Saint Etienne

(Celestial north at top, celestial east at left)

 

Mars, february 13, 2008, at 21h00 UT
(Diameter = 10,6'')
Poor seeing (Pickering 3 to 4)
 C14 + AP 1200 GTO
Red Filter (Astronomik)
Powermate Televue 2.5 x
DMK camera 31AF03.AS (BW)
15 i/s, gain and shutter adjusted manually
Stack of 900 frames processed with Registax
Thierry Lépine – Ecole Supérieure d’Optique – Saint Etienne – France

 

Mars, february 9, 2008, at 21h05 UT
(Diameter = 11'')
Poor seeing (Pickering 3 to 4)
 C14 + AP 1200 GTO
Red Filter (Astronomik)
Powermate Televue 2.5 x
DMK camera 31AF03.AS (BW)
15 i/s, gain and shutter adjusted manually
Stack of 900 frames processed with Prism and Registax
Thierry Lépine – Ecole Supérieure d’Optique – Saint Etienne – France

 

Mars, february 2, 2008, at 19h46 UT
(Diameter = 11,8'')
Poor seeing (Pickering 3)
 C14 + AP 1200 GTO
Red Filter (Astronomik)
Powermate Televue 2.5 x
DMK camera 31AF03.AS (BW)
15 i/s, gain and shutter adjusted manually
Stack of 900 frames processed with Prism and Registax
Thierry Lépine – Ecole Supérieure d’Optique – Saint Etienne – France

 

Mars, january 23, 2008, at 21h50 UT
(Diameter = 13'')
Poor seeing (Pickering 3 to 4)
 C14 + AP 1200 GTO
Red Filter (Astronomik)
Powermate Televue 2.5 x
DMK camera 31AF03.AS (BW)
15 i/s, gain and shutter adjusted manually
Stack of 900 frames processed with Prism and Registax
Thierry Lépine – Ecole Supérieure d’Optique – Saint Etienne – France

Some famous topographic features at this time.

See the dust storm in Utopia.

 

 

Mars, november 19, 2005, at 21h39 UT
(Diameter = 18,61'')
Poor seeing
 C14 + AP 1200 GTO
Red Filter (Astronomik)
Powermate Televue 2.5 x
Sony camera xcd-sx 910 (BW)
15 i/s, gain and shutter adjusted manually
Stack of 300 frames processed with Registax
Thierry Lépine – Ecole Supérieure d’Optique – Saint Etienne – France

Some famous topographic features at this time.

See the fogs above the north polar region.

 

Mars, november 6, 2005, at 20h25 UT
(Diameter = 19,93'')
Very Poor seeing
 C14 + AP 1200 GTO
Red Filter (Astronomik)
Powermate Televue 2.5 x
Sony camera xcd-sx 910 (BW)
15 i/s, gain at min, shutter in auto mode
Stack of 300 frames processed with Registax
Thierry Lépine – Ecole Supérieure d’Optique – Saint Etienne – France

Some famous topographic features at this time.

Olympus Mons is the highest volcano of the solar system (27 km high !!!). Actually, one can see the orographic clouds above it.

Note the very small south polar cap (end of summer in this hemisphere now).

For comparison, Mars with the ToUcam Pro Webcam
at 21h26 UT
Poor seeing
 C14 + AP 1200 GTO
Powermate Televue 2.5 x
Philips ToUcam Pro webcam
10 i/s, 1/33-second exposures
all at 50 %, except gamma = 10 % and gain at min
Stack of 500 frames processed with Registax

Thierry Lépine – Ecole Supérieure d’Optique – Saint Etienne – France