Marswatch 2007
Image courtesy Starry Night in opposition aspect
Mars observations for the 2007 opposition. Drawings and images of observations during the period surrounding the 2007 opposition of Mars.
This apparition, we will be monitoring Mars for the following:
1 Changes in shape and size of the polar cap(s)
2 White clouds and frosts
3 Changes in both shape and intensity of albedo features from 2005
4 Orographic clouds over the large volcanoes.
5 Dust storm activity
Observations will include drawings and images in filtered and unfiltered light.
Mars Drawing Forms:
Mars Observers Toolkit Mars drawing form
Email drawings and images and descriptive notes to postmaster@spacealberta.com
Observations:
Antoniadi seeing scale:
I - Perfect seeing without a quiver.
II - Slight undulations, moments of calm lasting several seconds.
III - Moderate seeing with larger air tremors.
IV - Poor seeing; constant troublesome undulations.
V - Very bad seeing; even a rough sketch impossible.
Generally recorded as 'Seeing Antoniadi III'
Pickering seeing scale:
P-1 Star image is usually about twice the diameter of the third diffraction ring (if the ring could be seen.)
P-2 Image occasionally twice the diameter of the third ring.
P-3 Image about the same diameter as the third ring and brighter at the center.
P-4 The central disk often visible; arcs of diffraction rings sometimes seen.
P-5 Disk always visible; arcs frequently seen.
P-6 Disk always visible; short arcs constantly seen.
P-7 Disk sometimes sharply defined; rings seen as long arcs or complete circles.
P-8 Disk always sharply defined; rings as long arcs or complete but in motion.
P-9 Inner ring stationary. Outer rings momentarily stationary.
P-10 Complete diffraction pattern is stationary.
E.M. Antoniadi observations 1928/1929.
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