Mars observation 27 and 31 Jan
Posted 01 February 2010 - 11:54 PM
Attached are links to two simple sketches (actually it is my third and fourth time drawing Mars in my entire 10 years of observing) I drawn on 27 Jan and on 31 Jan. The real image seen through the scope was more detailed than my sketches and was like a very good planetary photograph seen in real time. I did not observe with any filters. It was pretty amazing sight of Mars and at 320x it was razor sharp. 400x was no problem and retained the sharpness majority of the time, demonstrating the atmosphere was good.
Do comment on the sketches and tell me how to improve on it.
Posted 02 February 2010 - 01:33 AM
I tried to see details in the NPC but failed. You saw quite a lot!
Posted 02 February 2010 - 06:03 AM
I'm given to understand from a recent BAA circular that the border you saw in the NPC is where the ice cap is thinning over the permanent dunes which mark the extent of the cap in the summer.
Posted 02 February 2010 - 08:34 AM
Excellent observation of Mars. You have recorded several albedo features at different longitudes. As the Martian season progresses to Northern Summer (Ls 90*) the North Polar Cap (NPC) is sublimating and we are observing the dune fields at the edge of the cap (and within it as well). Thank you for sharing it with us all.
Posted 02 February 2010 - 09:53 AM
Mars looks wonderful in these sketches. The key to good sketching is that the sketcher be pleased with his (her) own sketches.
Posted 02 February 2010 - 10:15 AM
Wow, I did not know that those were called dunes! There is so much for me to learn about the Mars seasons and features on Mars. Frankly, I am just a beginner in observing Mars.
Posted 02 February 2010 - 12:37 PM
Posted 03 February 2010 - 08:02 AM
The diameter of Mars was 19mm on the sketch book. I scanned it and shrank the image. There was no image processing done after scanning.
Posted 04 February 2010 - 11:46 AM
I like the name of your telescope. My wife named mine "Telly".
Posted 05 February 2010 - 05:19 AM
My wife did the same, but I don't like the name! Is it common that wifes give names to the telescope of their husband?
Posted 05 February 2010 - 09:28 AM