#Lro quickmap how to#

Could you please help me in understanding this problem? This is strange unless the camera itself stores the image in a flipped manner along one direction only. You will notice that there is a flip in the left and right directions only. If you compare the LROC quickmap with the product M1106080949LC then the up and down directions remain same without any flip. However this was not observed in the images that I am referring to (cropped images are attached). Essentially if one image is flipped both left and right and up and down then I should get the other image.

If the flight direction changes and the camera moves from north to south then the up direction of the vertically long image is south, down direction is north, right direction is west and left direction is east. For example if the flight direction is such that the camera moves from south to north then I might get a vertically long image with the up direction being the north, down direction being the south, right direction being east and left direction being west. I expect one image to be a180deg rotation of the other if the flight direction changes. I understand that the left and right of an image is not always the west and east of real direction and it depends on the depends on the flight direction of the satellite. Please let me know if you still have any questions about the LROC data set. That is why you will always need to look at the index table to find the corner coordinates of the LROC data to further interpret the images. It totally depends on the flight direction of the satellite and the cameras onboard the satellite. The reality is the left and right of an image is not always the west and east of real direction as you noticed, and north of image will not always be the straight up direction. If you fill those numbers for those 4 image corners, you will see the coordinates are correct and consistent with the LROC quickmap.ĭESCRIPTION = 'The planetocentric latitude coordinate at the center ofĭESCRIPTION = 'The planetocentric longitude coordinate at the center of

And you can find corresponding index records from index.tab for the data product M1106080949LC. In index.lbl, you will find below definitions for the columns 70 to 79 for the lat &lon coordinates of the center point and 4 corner points of the image. Please refer to the index.tab and index.lbl in the below link.

#Lro quickmap how to#

It is the way how to interpret the image and the index tables. There is nothing wrong with the data products you downloaded from ODE. I would to like to know if this is true and if yes then why is there a flip in the image product from Lunar Orbital Data Explorer.īoth the LROC *.img data and browse images in Lunar ODE are the original data provided by the LROC team. I am assuming that the above link is giving the right image and the image from the Lunar Orbital Data Explorer is flipped. However if you compare the above image with the LROC image in the below link then you will realize that the images do not match and there is a flip along the vertical line. Minimum Longitude : 334 and Max Longitude : 335. Minimum Lattitude : 29 and Max Lattitude : 30. If you filter the LROC-CDRNAC product by the below location then you will get the image with the product ID M1106080949LC. The mission took off from the Satish Dhawan Space Centre in Sriharikota on July 22.Consider an image downloaded from the Lunar Orbital Data Explorer ( ). After revolving around the Earth's orbit for nearly 23 days, the craft had begun its journey to the moon on August 14. The Vikram Lander had successfully separated from Chandrayaan-2 Orbiter on September 2. Chandrayaan-2 Orbiter Doing Well but No Signal From Vikram Lander, Says ISRO Chief K Sivan. However, minutes before its scheduled soft-landing, the communication with Vikram Lander was lost. The Lander Vikram was scheduled to make a soft-landing near the south pole of the moon on September 7. The US space agency also stated that another attempt to locate lander will be made in October when the lighting is favourable.'The lighting will be favourable when LRO passes over the site in October and once again attempts to locate and image the lander', it added.Įarlier this month, the Chandrayaan-2 orbiter had also clicked a thermal image of Vikram Lander. It was dusk when the landing area was imaged and thus large shadows covered much of the terrain it is possible that the Vikram lander is hiding in a shadow,' the statement said. 'The scene above was captured from a Lunar Reconnaissance Orbiter Camera (LROC) Quickmap fly-around of the targeted landing site image width is about 150 kilometres across the centre.so far the LROC team has not been able to locate or image the lander. The US space agency also issued a statement saying it is possible that the Vikram lander is hiding in a shadow.