M16, the Eagle nebula

M16, The Eagle nebula. This image was taken using my 4 inch f/6.3 refractor, a Vixen Atlux mount, PHD auto guiding, an Atik 383L mono CCD camera and an Astronomik HA filter. I captured five minute sub frames with matching dark frames and combined them with flat field frames to reduce the effect of vignetting in the final image. The H-alpa luminance data had a total exposure time of 40 minutes whereas the colour data was taken from an old image taken two years ago with a ten inch f/4.8 reflector.

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Narrowband with the 4 inch refractor

Narrowband with colour from an old image taken with the 10" reflector

The Markarian chain

The Markarian chain. This group of galaxies lies in the constellation of Virgo the virgin. I captured five-minute sub frames with matching dark frames and combined them with flat field frames to reduce the effect of vignetting in the final image. The total exposure time was 95 minutes using an IDAS filter for the image luminance. The colour data was taken from an old image . I was using my 4 inch f/6.3 refractor, a Vixen Atlux mount, PHD auto guiding and an Atik 383L mono CCD camera.

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Using data from two scopes

The Leo Triplet

This new processed image has added 90 minutes of luminance data using an IDAS filter. A total exposure time of 150 minutes.