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Completed

Trouble accessing all images from IMAGE(pawprint)

tknapp 2 years ago in Search for data updated by Archive Science Group 2 years ago 1

I'm attempting to download a dataset of 16 images, when I download the file I'm only given one image. This is the object information:

Object

00:43:58.64

RA (J2000)

-73:12:17.85

DEC (J2000)

303.68

Galactic longitude

-43.91254

Galactic latitude

0.6 deg²

Sky Coverage

1.65°

Field of View

0.594"

Sky Resolution

0.3381"

Data

IMAGE (PAWPRINT)

Data Type

21.115

Sensitivity (AB mag at 5σ)

2


Unfortunately, the object that I am interested in is not contained in the one image I am able to download. Can someone give me a hint as to how I can access all the images from this dataset? 

Thanks!

Answer

Answer
Completed

Thank you for your question tknapp!

The image that you are downloading is a multi-extension file (MEF), with each detector images stored as 16 FITS extensions in the image file. If you are displaying such FITS file with DS9 you only see extension #1 by default. You can display all the 16 extensions by choosing this option in ds9. Alternatively, you can display each extension using the commandline ``ds9 filename[n]'' with n = 1-16.

A useful short guide on the data format of the science data products is available here:
http://archive.eso.org/cms/eso-data/phase3/ESO_reduced_data_products_description.pdf

Answer
Completed

Thank you for your question tknapp!

The image that you are downloading is a multi-extension file (MEF), with each detector images stored as 16 FITS extensions in the image file. If you are displaying such FITS file with DS9 you only see extension #1 by default. You can display all the 16 extensions by choosing this option in ds9. Alternatively, you can display each extension using the commandline ``ds9 filename[n]'' with n = 1-16.

A useful short guide on the data format of the science data products is available here:
http://archive.eso.org/cms/eso-data/phase3/ESO_reduced_data_products_description.pdf