How to make pictures actually..picture something

[Jananas07 0]

Hi! So Ive found some pictures from an arxiv report in a database which I need for my project and converted them to fits files (The picture on the left). The one that was used in the arxiv report (picture on right) is a zoomed in picture of a galaxy in that picture, where its clearly visible. However when I try zooming in on the exakt coordinates of the galaxy in the fits image, its just plain black. I want the picture "raw", that's why I saved it as fits and not their pdf picture from report. Someone suggested first stretching the image for a more detailed image but some filters had to be used though... the only thing I can find on the tables of the images is that filter F160W was used. I have no idea how to move forward now, completely stuck. Would appreciate some help! 

[JamesF 17,817]

It looks to me as though in converting the image to FITS you have also changed it from greyscale to a depth of one bit per pixel (so each pixel is either white or black rather than a shade of grey) and inverted the result.  The various greys making up the galaxy are therefore now all black, hence what you're seeing where the galaxy should be.

James

[Jananas07 0]

Ah that makes sense... thank you!