Sørens astro-photos
NGC 6946 - see also the HST image below. This color image was constructed from U+B (blue) and V+I images (green) from the Nordic Optical Telescope and K-band images (red) from the GEMINI infrared camera on the Lick 3 m telescope. Since the GEMINI field of view is only 3x3 arcmin, 4 GEMINI images have been mosaiced together to match the NOT field of view.
NGC 4258 - also known as M106. Blue channel: 3 x 5 min in B. Green channel: 3 x 5 min in V. Red channel: 3 x 5 min in V + 5 min in I + 3 x 20 min in H-alpha. BVI images are taken with the Lick 3-m (Shane) telescope and prime-focus CCD camera and the Halpha data are from the Lick 1-m (Nickel) telescope
Note: The field of the Nickel camera is smaller (6x6 arcmin) than that of PFCAM (9x9 arcmin). Two Nickel exposures were mosaiced together to cover NGC 4258.
NGC 3521. Blue: 3 x 5 min in B. Green: 3 x 5 min in V. Red: 4 x 5 min in R + 3 x 20 min in H-alpha. BV data from Lick 3-m and R+Halpha images from the 1-m Nickel telescope.
M83 = NGC 5236, face-on spiral galaxy. Observed with the danish 1.54 m telescope and DFOSC at ESO, La Silla.
M63 = NGC 5055, flocculent spiral galaxy. Data for exposures as for NGC 3521.
This is a section of the nearby spiral NGC 6946, taken with the Wide Field Planetary Camera 2 on board the Hubble Space Telescope. Blue: F439W filter, Green: F555W filter, Red: F555W + F814W + F656 (Halpha).
The image to the left shows the full WFPC2 field of view while the one to the right shows only the "Planetary Camera", i.e. the small chip in the middle. On the PC image you can see an extremely bright young star cluster (slightly to the right of the centre of the image) with an estimated mass of about 1 million solar masses and an age of about 15 million years.
Have a look at this finding-chart to find out which section of the galaxy is covered by the WFPC2 image.
A colour composite image of the "Dumbbell Nebula" or M27, a planetary nebula in the constellation of Vulpecula. This image is based on three individual exposures in the filters B,V and R of 60 seconds each, taken in september 1997 with the Danish 1.54 meter telescope at La Silla and the DFOSC instrument.
This nice face-on spiral galaxy (NGC 3184) was observed in may 1997 with the Nordic Optical Telescope using the ALFOSC instrument and a 2048 x 2048 CCD. The image was combined from exposures through B, V and R filters, with an H-alpha image also added to the R-band image in order to enhance the HII regions.
