Mars on Halloween (31 October 2020) LRGB (rdk_CA)

Contains: Solar system body or event

Mars on Halloween (31 October 2020) LRGB

Acquisition type: Lucky imaging

This was my second try at LRGB imaging of Mars. Though seeing was not quite a good as my previous attempts, this time around I was able to adjust my camera settings / post-processing to get much lower noise in the color data. This made it easier to make adjustments to improve the color balance. For this planet, taking a deep red / IR luminance frame seems to provide better results, at least given my experience with my OSC camera (which did a fine job on Jupiter and Saturn.)

For this image, Mars had a visual magnitude of -2.1, apparent size of 20 arc seconds (98% illuminated.) The planet was 55 degrees above the horizon. Images were acquired at a rate of 100 frames per second, with a camera gain of 170. Approximately 120 seconds of data were acquired for each filter, providing ~12,000 frames. I stacked the best 50% of these frames, using a 3x drizzle during post-processing.

In this image, the region containing the Valles Marineris system of canyons (stretching 4000 km east-to-west) can be seen. This is one of the longest and deepest system of canyons in our solar system. The Viking 1 and Mars Pathfinder missions landed to the northeast of this region.

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	Distinct awarded users	Total awarded images
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Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
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Star trails
Northern lights
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Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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