[FPSPACE] FPSPACE Digest, Vol 57, Issue 5

Raghavan Gopalaswami gopalavatar at yahoo.co.in
Thu Nov 20 20:42:44 EST 2008


Replies to Message 6 FPSPACE Digest, Vol 57, Issue 5
 
1. ISRO (Indian Space Research Organization) website http://isro.gov.in/ has carried regular updates on the status and performance of its moon mission since launch on 22 October 08. 
 
2. Latest images of the moon are available at 
http://isro.gov.in/pslv-c11/photos/moon_images.htm
 
3. For complete details of release of the Moon Impacter Probe (MIP) are at http://isro.gov.in/pressrelease/Nov14_2008.htm. More specifically, the answer to your question on the Impacter is as follows:
 
 "..........MIP’s 25 minute journey to the lunar surface began with its separation from Chandrayaan-1 spacecraft at 20:06 hrs (8:06 pm) IST. This was followed by a series of automatic operations that began with the firing of its spin up rockets after achieving a safe distance of separation from Chandrayaan-1. 
 
Later, the probe slowed down with the firing of its retro rocket and started its rapid descent towards the moon’s surface. Information from the its instruments was radioed to Chandrayaan-1 by MIP. The spacecraft recorded this in its onboard memory for later readout. Finally, the probe had a hard landing on the lunar surface that terminated its functioning........."
 
4. About Imaging Equipment on Chandrayaan-1. There are 11 payloads on-board the orbiter. 6 are Indian including the MIP and 5 from other countries.
 
Full details of all the instruments on Chandrayaan have been  published in http://en.wikipedia.org/wiki/Chandrayaan-1#Indian. A summary is given below:
 
Indian Payloads on Chandrayaan-1


TMC or the Terrain Mapping Camera is a CCD camera with 5 m resolution and a 40 km swath in the panchromatic band 
HySI or Hyper Spectral Imager will perform mineralogical mapping in the 400-900 nm band with a spectral resolution of 15 nm and a spatial resolution of 80 m. 
LLRI or Lunar Laser Ranging Instrument determines the height of the surface topography by sending pulses of infrared laser light towards the lunar surface and detecting the reflected portion of that light. It will be operating all the time and will take 10 measurements per second on both the day and night sides of the moon .It was successfully tested on 16 November 2008. 
C1XS or X-ray fluorescence spectrometer covering 1- 10 keV, will map the abundance of Mg, Al, Si, Ca, Ti, and Fe at the surface with a ground resolution of 25 km, and will detect solar flux  This payload is a collaboration between Rutherford Appleton laboratory, U.K, ESA and ISRO. 
HEX is a High Energy X-ray/gamma ray spectrometer for 30 – 200 keV measurements with ground resolution of 40 km, the HEX will measure U, Th, 210Pb, 222Rn degassing, and other radioactive elements 
MIP or the Moon Impact Probe developed by the ISRO, is an impact probe which was ejected at 20:00 hours IST on 14 November, 2008. The Moon Impact Probe successfully crash landed at the lunar south pole at 20:31 hours IST on 14 November, 2008
Payloads from Other Countries on Chandrayaan -1

SARA, The Sub-keV Atom Reflecting Analyser from the ESA will map composition using low energy neutral atoms sputtered from the surface.
M3, the Moon Mineralogy Mapper from Brown University and JPL (funded by NASA) is an imaging spectrometer designed to map the surface mineral composition. 
SIR-2, A near infrared spectrometer from ESA, built at the Max Planck Institute for Solar System Research, Polish Academy of Science and University of Bergen, will also map the mineral composition using an infrared grating spectrometer. 
miniSAR, designed, built and tested for NASA by a large team that includes the Naval Air Warfare Center, Johns Hopkins University Applied Physics Laboratory, Sandia National Laboratories, Raytheon and Northrop Grumman; it is the active SAR system to search for lunar polar ice. 
RADOM-7, Radiation Dose Monitor Experiment from the Bulgarian Academy of Sciences maps the radiation environment around the Moon.


--- On Thu, 20/11/08, fpspace-request at friends-partners.org <fpspace-request at friends-partners.org> wrote:

From: fpspace-request at friends-partners.org <fpspace-request at friends-partners.org>
Subject: FPSPACE Digest, Vol 57, Issue 5
To: fpspace at friends-partners.org
Date: Thursday, 20 November, 2008, 8:01 PM

Message: 6
Date: Sat, 15 Nov 2008 11:11:04 -0500
From: "Peter Pesavento" <pjp961 at svol.net>
Subject: [FPSPACE] Questions about the Indian lunar mission
To: <fpspace at friends-partners.org>
Message-ID: <491ef4b5.08102c0a.44e1.ffff8be2 at mx.google.com>
Content-Type: text/plain; charset="us-ascii"

It is not clear to me, so I am asking the assembled here the following:

 

--the probe that "landed" didn't really, did it?  It was an
"impact probe"?
As in smashed into the crater, and not a soft-landing? 

 

--or was it a soft-landing?  The reports state it took 25 minutes to
"land".following ejection from the main orbiter.

 

--video was taken.will this video be released?

 

--does the lunar orbiter itself have imaging equipment?

 

Answers appreciated.




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