Extragalactic objects

Stephan's Quintet, imaged in R,V,B + H-alpha with ALFOSC.

Messier 74 galaxy imaged in R,V,B + H-alpha with ALFOSC.

NGC 7479, also called the Superman galaxy, imaged in R,V,B with ALFOSC.

Galaxy cluster Abell 1689, imaged in g,r,i with ALFOSC. Multiple strongly gravitationally-lensed galaxies are visible.

NGC 6745 galaxy imaged in i,r,g with ALFOSC. Compiled from scientific data with permission from PI.

Galaxy NGC4216 and supernova SN 2024gy, taken with ALFOSC using R,V,B filters. 20 minutes exposures for each filter.

Galaxy NGC 4388 and supernova SN 2023fyq, with ALFOSC in i,r,v filters. Composite of 2 hours of galaxy images, together with 10 minutes of images when the supernova was bright in July 2023.

Two colliding galaxies, NGC 4038 and NGC 4039. ALFOSC image in B, V, R and H-alpha, with 10 minutes per filter.

Image is a composite of B(13 min), V(8 min) and R(8 min).

A nearby starburst galaxy about 12 million light years away.

Galaxy PGC21615 and it's many surrounding galaxies. Taken with ALFOSC using 12 minutes each of g', r' and i' filters.

Exposures are through C, V and R filters with an H alpha image also added to the R-band image in order to enhance the HII regions.

False-colour image based on U, I and H-alpha images.

False-colour image based on U, I and H-alpha exposures.

Image is a composite of B, V and R exposures at twilight.

Image is a composite of B, V and R exposures at twilight.

Right: H-alpha image of galaxy IZw18, Stancam 0.6'' seeing. Image size is 7'' by 70'' at d=10 Mpc equals 3.4x3.4 kpc. Left: a B-band image of the same object (and same orientation) based on 2 times 20 min integration.

The Black Eye Galaxy. The image is a composite of B, V, and i exposures taken at twilight.

The Black Eye Galaxy. The image is a composite of B, V, i, and H-alpha exposures taken at twilight. The H-alpha and i bands are combined in red colour to enhance the brightness of the star formation regions in the prominent dust cloud.

Composite image of B, V and R filter exposures taken at twilight.

Cetus A. The image is a composite of B, V, and R exposures taken at twilight.

The Spindle Galaxy. The image is a composite of B, V, and R exposures taken at twilight.

ARP 184, a peculiar galaxy. The image is a composite of 600s V and R exposures and a 800s B exposure.

The image is a composite of 550s V and R exposures and a 720s B exposure.

Together these two galaxies form the Siamese Twins. The image is a composite of 9 min. B, V and R exposures, observed with ALFOSC.

Whirlpool Galaxy
ALFOSC (Open, V, B, 5 min. each and R 16 min.)

Image is a composite of BVR exposures.

Image is a composite of 10 min R and V exposures and 15 min B exposure in ALFOSC.

NOTCam colour image using 18 min J and H band exposures.

Imaged by ALFOSC through B, V, and R filters

BVR image of the collision of NGC4567 and NGC4568. Imaging done with ALFOSC.

Observed with BVR filter on ALFOSC

BVR image, observed with ALFOSC

'Before' and 'after' images of SN 2011dh in the Whirpool Galaxy (M 51) imaged with ALFOSC through B, V and R filters