IC443, The Jellyfish nebula

This image was taken using my 4 inch f/6.3 refractor, a Vixen Atlux mount, PHD  auto-guiding, a set of Astronomiik narrowband filters, S11, O111 and H Alpha, with an Atik 383L mono CCD camera. I captured five minute sub frames with matching dark frames and combined them with bias and flat field frames to reduce the effect of vignetting in the final image. The H Alpha luminance data was taken on two separate evenings, combined with some old narrowband colour data. The total exposure time was 60 minutes using O111 and S11 filters and 120 minutes using a H Alpha filter.

RGB image

Hubble Palette

Hubble Palette + RGB

More renderings of the Rosette nebula

Here are another two versions of the Rosette nebula image using H-Beta and O111 as the blue channel combined with H-Alpha as the red channel.  The image is Bi colour whereas the second image is Bi colour combined with the Hubble palette

Bi Colour

Bi colour combined with the Hubble palette

The Rosette nebula

NGC2244.Two of these three images of the Rosette Nebula reveal extra data taken using an Astronomik H Beta filter. I was using a 4 inch F /6.3 refractor , a Vixen Atlux mount , PH auto guiding , a set of Astronomik narrowband filters , HA , S11, O111 and H Beta . with an Atik 383L mono CCD camera . I captured five minute sub frames with matching dark frames and combined them with flat field and bias frames to reduce the effect of noise and vignetting in the final image. The total exposure time was 30 minutes using an S11 filter , 30 minutes using an O111 filter , 60 minutes using a H Alpha filter and 65 minutes using a H Beta filter

H-alpha H-beta bicolour

Hubble palette

Hubble palette plus H-beta

The Coma cluster

NGC4872. The Coma cluster. This group of galaxies lies in the constellation of Coma Berenices. I took this image using my four inch f/6.3 refractor, a Vixen Atlux mount, PHD auto guiding, with  a set of Astronomik R.G.B. filters, an IDAS filter, and an Atik 383L mono CCD camera. I captured five minute sub frames with matching dark frames and combined them with flat field frames and bias frames to reduce the effect of noise and vignetting in the final image. The total exposure time was ten minutes for each colour filter and two hours for the luminance channel using the IDAS filter.

This image of the Coma cluster contains data from two telescopes , a 4 inch refractor and a ten inch reflector.

M105. NGC3389

M105. NGC3389. This group of galaxies lies in the northern part of the constellation of Leo. I was using my 4 inch f/6.3 refractor, a Vixen Atlux mount, PHD auto guiding and an Atik 383L mono CCD camera. I used an Idas filter for the luminance data and RGB filter for the colour data. I captured five minute sub frames with matching dark frames and combined them with flat field frames and bias frames to reduce the effect of noize and vignetting in the final image. The total exposure time was 60 minutes using the Idas filter and ten minutes for each RGB filter.