The Deep Photographic Guide to the

The constellation of the month

Triangulum Australe, Norma, Ara

Data of Photography

Date:11.6.1994 Time:2:23 LT
Exposure:30 min Field of View:27o x 39o
Emulsion:Scotchchrome 400 Optics:f=50mm 1/2.8
Place: Cerro Tololo Observer:S. Kohle

© Copyright by the observers


The image was obtained with a usual mechanical camera and lens of normal focal length (50mm). Guiding was done on a Super Polaris mount. The place is the Cerro Tololo Observatory in Chile.


The conventional photography was digitized to 2048 x 3072 pixels and a color depth of 3 x 8 Bits. Digital image processing improved the quality of the image dramatically. The main steps are the subtraction of the terrestrial skybackground and following contrast enhancement.

Image Size and Resolution

Shown are reduced resolutions with a size of 512 x 341 pixels and 1024 x 683 pixels. If you are seriously interested in higher resolutions and accept our copyright, feel free to contact us by email. The special object sections do have the full resolution of the original scan, but of course are limited to a smaller size of 255 x 255 pixels, equivalent to 3o x 3o in the sky.