Sunday, 29 January 2023

M78

M78. This image of M78 was taken on four separate evenings. On the first evening I used an IDAS filter to collect 90 minutes of general luminance data. On the second evening I captured two hours of O111 data, on the third evening I captured four hours and ten minutes of data using a H Alpha filter and on the fourth evening three hours of data using a blue filter a total exposure time of 10 hours and ten minutes. I was using my four inch F/6.3 refractor. a Vixen Atlux mount, PHD auto guiding, A set of Astronomik RGB and narrowband filters and 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.



Cygnus loop with 3 telescopes

Cygnus Loop. This image contains data taken from three telescopes, a ten inch reflector ,  a four inch refractor and an 80mm refractor.

 


Friday, 27 January 2023

NGC6960 and Pickerings Triangle

NGC6960 and Pickerings Triangle. This image was taken on three separate evenings because the constellation of Cygnus was low in the western sky setting with only about one hour of imaging time. I was using my 4 inch f/6.3 refractor, a Vixen Atlux mount, PHD auto guiding, Astronomik narrowband and RGB filters and 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 for each filter was 60 minutes using a H Alpha filter, 40 minutes using an O111 filter, 35 minutes using an S11 filter and ten minutes using each RGB filter.

RGB image



Bi-colour image


Hubble Palette


Wednesday, 25 January 2023

The Rosette nebula

NGC2244, the Rosette nebula. This bright patch of nebulosity lies in the constellation of Monoceros. I was using my 4 inch f/6.3 refractor, a Vixen Atlux mount PHD  auto guiding, a set of Astronomik RGB and narrowband filters and 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 of each filter was 60 minutes using a H Alpha filter, 30 minutes using an O111 filter, 30 minutes using an S11 filter and five minutes for each RGB filter.

RGB image


Bi colour image

Hubble palette


Saturday, 21 January 2023

NGC2264, The Christmas tree cluster, The Foxfur and Cone nebula.

NGC2264, The Christmas tree cluster, The Foxfur and Cone nebula. This patch of nebulosity lies in the constellation of Monoceros. I took this image on five separate evenings using Astronomik narrowband and RGB filters. The H Alpha data were taken under bright moon light with the O111 and S11 data whereas the RGB data were taken under clear moonless sky conditions. 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 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 times were seven and a half hours using a H Alpha filter, two hours using an O111 filter, 3 hours using a S11 filter, and 1 hour using each RGB filter. A total exposure time of 15 and a half hours.

RGB Colour


Hubble Palette


Data of NGC2264 combined using two telescopes, a 4 inch refractor and a ten inch reflector.



Friday, 20 January 2023

IC5146 The Cocoon nebula

IC5146 The Cocoon nebula. This image was taken on two separate nights under bright moonlight with stars only visible down to magnitude 4, I was using my 4 inch f/6,3 refractor, a Vixen Atlux mount , PHD auto guiding ,  Astronomik filters  HA , O111 and blue, 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 vignetting in the final image, The total exposure times on each evening were 60 minutes using a HA filter, 20 minutes using an O111 filter and 15 minutes using a blue filter.