Bilder från vårt Celestron C-14 teleskop och vår Apogee 7 CCD-kamera.

Copyright: Tycho Brahe-observatoriet

We have also a collection of images taken with our older ST-6 CCD camera. This camera was installed in 1993 and has been frequently used on our old C-14 telescope.

The images are obtained with the SBIG ST-6 CCD camera. In most cases the images are composites of several (10-20) individual exposures. A typical integration time for each image is in the range 10-30 sec. The drive system of our 1973 vintage C14 telescope does not allow exposure times longer than approx. 40 sec.

All images are taken using a focal reducer/corrector lens. This makes the working focal ratio f7 on the C14. The images are with few exceptions "raw", i.e. no image enhancing/filtering has been done.

Jan Sonnvik. and Johan Holmberg.

The following images have been obtained at the Tycho Brahe amateur observatory with an ST-6 CCD camera mounted on a Celestron 14 inch telescope. Exposures times are typically in the range 2-10 min. The images were taken by Jan Sonnvik and Johan Holmberg and have subsequently been false-coloured by local artists.