Mars: A Shrinking Disk
“Mars noticeably smaller a month past opposition, its disk wrapped in a bluish limb haze with dark markings still visible across the center.”
More than a month past opposition, Mars’s apparent size has noticeably shrunk as Earth pulls ahead in its faster orbit. A distinct bluish haze wraps the limb, and dark markings remain visible across the disk’s center on a clean, low-noise background.
Captured as luminance and RGB video sequences, derotated in WinJUPOS, stacked in AutoStakkert!3, and processed in PixInsight.
Total Exposure
~3 min video, derotated with WinJUPOS
Focal Length
4000mm
Integration
| Filter | Subs |
|---|---|
| L | 1 video (~3 min total (derotated)) |
| R | 1 video (~3 min total (derotated)) |
| G | 1 video (~3 min total (derotated)) |
| B | 1 video (~3 min total (derotated)) |
Locations
San Giuliano Milanese, Lombardy, Italy
Bortle Class 7 • 2025-02-20