View Single Post
  #1  
Old 06-04-2007, 05:14 PM
Zac Pujic
Registered User

Zac Pujic is offline
 
Join Date: Aug 2005
Location: Brisbane
Posts: 112
Mars April 6. South Polar cap and evening cloud

I had superb seeing this morning and took images of Jupiter and Mars. I only took a few of Mars since I had taken about 30 gigs of Jupiter images.

As usual none of the Mars simulators agree on what longitude is visible, however the dark area near the polar cap is Mare Sirenum (CM is around 152 degrees). An evening cloud is on the left hand (evening) terminator over the area Chryse. It is bright in blue so this suggests it is present high in the Martian atmosphere rather than being surface frost (which is dim in blue light and bright in green).

The polar cap appears split. The diameter is about 4.9 arcseconds and south is near the top.
31 cm Newtonian f/20. Astronomik filters. SkyNyx 2.1M camera.

Zac Pujic
Brisbane, Australia
http://astroimg.org
Attached Thumbnails
Click for full-size image (Mars Zac Pujic April 6 0530.jpg)
51.3 KB72 views
Reply With Quote