[X] My Assistant

[CosmicRocker]

I'm still trying to figure out a number of things about the new images we are trying to work with. Assuming others are likewise trying to learn, I thought I would open this thread to create a place for such discussions.

I'd like to start out with a comment about raw image contrast. There have been several postings in the main threads about whether or not the MSL raw images have been stretched like those from the MER missions. I am certainly no expert on this, but it looks to me as if the MSL images have not been stretched at all. I haven't tried to analyze all of the image types, but the hazcams and navcams have pixel brightness histograms that are very different from their MER counterparts.

This attached image compares MER and MSL navcams along with their luminosity histograms.


The MSL images clearly are not using the entire, available range of brightness values, whereas the MER raws do. For this reason, the MSL raw images can usually be nicely enhanced by simply stretching the distribution of brightness across the full 256 value range.

[climber]

I must admit there's something I don't understand.
I understood that, once the covers of the Hazcam have been removed, they were to kind of hanging somewhere (I mean not on the ground).
Looking at the bellypan or whatever you call it, I can't see those covers.
Any thoughts?

[dvandorn]

I understood that, once the covers of the Hazcam have been removed, they were to kind of hanging somewhere (I mean not on the ground).
Looking at the bellypan or whatever you call it, I can't see those covers.
Any thoughts?

If you look closely at the bellypan, underneath and offset from each of the hazcam lenses there is a spring. We know that the hazcam lens covers were designed for a one-time deployment; the springs were supposed to move them completely out of the way of the lenses, for good. My guess is that the lens covers are out of sight on the bottom of the lens housing, one each attached to each spring visible in the MAHLI images.

-the other Doug