NGC7000 and IC443, The Jellyfish nebula.

NGC7000 in narrowband with the Hubble palette

Here we have the wall section of the North American nebula, a star forming region in the consellation of Cygnus the swan. I captured five minute sub frames with matching dark frames and combinded them with flat field frames to reduce the effect of vignetting in the final image. I was using my ten inch F 4.8 reflector, a Vixen Atlux mount, PHD auto guiding and an Atik 383L mono CCD camera. The filters was a set of Astronomik  SII, OIII and H Alpha narrowband filters with total exposure times of 40 minutes for each filter.

IC443 The Jellyfish nebula with the Hubble palette

This lies in the consellation of Gemini the twins. I was using my Ten inch reflector, a Vixen Atlux mount, PHD auto guiding and an Atik 383L mono CCD camera. I captured five minute sub frames with matching dark frames and combined them with flat field frames to reduce the effect of vignetting in thr final image. I was also using narrowband filters Astronomik SII, OIII and H Alpha filters with total exposure times of 30 minutes for each filter.

IC5146 The Cocoon nebula.

This reflection emission nebula lies in the constellation of Cygnus the swan. Unfortunately the clouds on this particular evening were closing in,  I only had a total of about one hour and ten minutes of imaging time; therefore these images have more noise in them than some of my previous images.  I captured five minute sub frames with matching dark frame and combined them with flat field frames to reduce the effect of vignetting in the final image. The telescope I was using was my ten inch F4.8 reflector, a Vixen Atlux mount, an Atik 383L mono CCD camera and PHD auto guiding. The exposure times were 35 minutes using a H-alpha filter , ten minutes using an SII filter, ten minutes using an OIII filter and fifteen minutes using a blue filter.

Bi-colour image

Narrowband

Hubble Palette

RGB Narrowband composite

This final image of the Cocoon nebula has additional exposure of three and a half hours using a H-alpha filter. A total exposure time of four hours and forty minutes.

NGC 6992, The Eastern Veil nebula

I took these images on three separate evenings capturing five minute sub frames with matching dark frames , combined with flat field frames to reduce the effect of vignetting in the final image .The total of exposure times for each filter was sixty minutes using SII, OIII and H-alpha filters . I used for the colour data SII for green , OIII for blue and H Alpha for the red . I also had light pollution and moonlight to contend with , on one evening stars was only visible down to magnitude four . The telescope I was using was my ten inch F4.8 reflector , a Vixen Atlux mount with P H D auto guiding . The total exposure time in the final combined image was nine hours .