- Sketches (Planets) -

Mars

70mm f/5.7, 133x
2018-11-27 (17:45 - 18:15 UT)

../sketches/robert-zebahl/2018-11-27_mars.jpg

102mm f/11, 160x, Seeing 3-4/5
2020-11-04 (20:45-21:25 UT): Observation with orange filter. The small southern polar cap was very clear, the northern polar cap only faintly visible.

../sketches/robert-zebahl/2020-11-04_mars.jpg

152mm f/8, 171x, Seeing 3-4/5
2020-11-06 (21:05 - 22:00 UT): Observation with orange filter and neodymium filter combined.

../sketches/robert-zebahl/2020-11-06_mars.jpg

102mm f/11, 160x, Bortle 7-
2020-11-08 (20:30 - 21:10 UT): Observation with orange filter.

../sketches/robert-zebahl/2020-11-08_mars.jpg

Jupiter

70mm f/5.7, 100x
2018-05-25 (21:40 - 21:55 UT)

../sketches/robert-zebahl/2018-05-25_jupiter.jpg

70mm f/5.7, 100x
2018-06-21 (21:00 - 21:15 UT)

../sketches/robert-zebahl/2018-06-21_jupiter.jpg

70mm f/5.7, 100x
2018-07-11 (20:10 - 20:20 UT)

../sketches/robert-zebahl/2018-07-11_jupiter.jpg

120mm f/5, 120x
2018-07-13 (20:00 - 20:20 UT)
I used a light yellow filter (#8). The moon Ganymed slowly reappeared behind Jupiter, but I didn't sketched this.

../sketches/robert-zebahl/2018-07-13_jupiter_1.jpg

70mm f/5.7, 100x
2018-07-13 (20:25 - 20:40 UT)
The moon Ganymed was close to Jupiter, which I didn't sketched.

../sketches/robert-zebahl/2018-07-13_jupiter_2.jpg

70mm f/5.7, 93x
2019-07-22 (20:00 - 20:20 UT)
Rough sketch of Jupiter with focus on the GRF and the shadow of Io. Also noticeable in comparison to previous years is the much darker equator zone. The air was too unsteady for further details.

../sketches/robert-zebahl/2019-07-22_jupiter.jpg

102mm f/11, 125x
2024-01-20 (20:00 - 20:10 UT)
Rough sketch of Jupiter.

../sketches/robert-zebahl/2024-01-20_jupiter.jpg