Wednesday, 15 March 2023

B33

Here is an image of B33 taken using a blue filter on two separate evenings. To prevent the stars from saturating I only captured 60 second sub frames with matching dark frames. I then combined them with flat field frames and bias frames to reduce the effect of vignetting in the final image. The total exposure time was two hours. The colour data were taken using H-alpha for red O111 for green and aditional blue filter for blue. plus a combination of old RGB data.


Captured through a blue filter

Final colour image


Saturday, 4 March 2023

Southern skies

These camera on tripod shots was taken from a Cape Verde resort using 4 x 20 second exposures, stacked together with the camera set at ISO 3200. The camera was a Cannon 50D and a Tamron 18mm - 270mm zoom lens. The images show the Southern Cross, Centaurus, Omega Centauri NGC5139 and the Jewel box cluster.

Southern Cross


Centaurus Crux