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India's Chandrayaan 2 mission + updates

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#51 John_Moore

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Posted 30 September 2019 - 08:45 PM

Bill, on second thoughts, I think you're right: shadow effects can transform a relatively flat surface in to an extraordinary, unrecognisable view to fool the eye (the wanting eye, in some circumstances). I was just throwing it out there - case the LRO crew, for the expected October attempt view (under better lighting conditions) again, might take it onboard.

 

John


Edited by John_Moore, 30 September 2019 - 08:48 PM.


#52 BillHarris

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Posted 30 September 2019 - 11:21 PM

Still, your blink technique is promising. We'll get better post-arrival event photos in October and see what shows up.

#53 John_Moore

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Posted 04 October 2019 - 11:03 AM

While we are still awaiting developments of the impact(?) site for Vikram, the orbiter is returning some nice details of the Boguslawsky E region, using its OHRC (Orbital High Resolution Camera).

 

John Moore

 

OHRC boulders

Edited by John_Moore, 04 October 2019 - 11:22 AM.

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#54 John_Moore

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Posted 17 October 2019 - 04:35 PM

Reflected sunlight data details from the IIRS (Imaging Infra-Red Spectrometer) camera onboard the Chandrayaan 2 Orbiter resulted in the below image.

 

Such data can be very nice-looking, but confusing; however, the tips are, firstly, look at the vertical 'Radiance' scale (light/heat value), secondly, then the horizontal scale showing the 'Wavelength' scale (reflected solar radiation). And from there try to integrate both data sets to visualise a somewhat 3d effect in one's mind for each feature mentioned (using the colour-scale for each feature shown).

 

Light/heat temperatures (Radiance - vertical scale) on a surface, therefore, relates directly from the solar light Wavelength (horizontal scale) intensity impinging upon said.

 

John Moore

 

Chandrayaan2ReflectanceVersusFeatures

Edited by John_Moore, 17 October 2019 - 11:22 PM.


#55 frank5817

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Posted 17 October 2019 - 07:54 PM

John,

 

Very good.

 

Frank


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#56 BillHarris

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Posted 19 October 2019 - 12:16 PM

Last word is that LROC is scheduling a series of images in the arrival area this week. An exact location may lead to higher-rez images from Chandrayyan orbiter.

#57 John_Moore

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Posted 19 October 2019 - 03:27 PM

Thanks, Frank...and Bill for the update waytogo.gif

 

John


Edited by John_Moore, 19 October 2019 - 03:33 PM.



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