Observations of NGC7635
These are the observations available for NGC7635. If you have any of your own that you'd like to submit we'd love to put them on the website.
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The Bubble Nebula (NGC7635) in Cassiopeia
David's Notes.
The Bubble Nebula in Cassiopeia, AKA Caldwell 11, is a favourite object for visual observers and imagers. The 'bubble' is about 10 light years across and some 11,000 light years away. The bubble has been created by a fierce stellar wind from a hot, young and massive central star. The star, SAO 20575, is thought to have a mass of 10 - 20 solar masses.
An LRGB image of the Bubble Nebula (NGC 7635) by David Davies from his Cambridge observatory in the UK. Image Details
I have been gathering data on the Bubble Nebula as a narrow band project for the past two months and have acquired some five hours of H-alpha, six hours of OIII and nine hours of SII. The SII signal is particularly faint. I then gathered a further 30 minutes each of RGB data to colour the stars.
I'm still processing this data and keep returning to it to see what further can be done, but since the results thus far are quite attractive, I thought I'd share them with you on this Christmas Eve (which he did, I'm just a bit slow sharing it with all of you - James).
I've constructed a 'super luminance' image from the sum of the narrow band images and applied it to the RGB image to produce the LRGB image, above. The narrow band image is presented in the Hubble palette, but I have yet to substitute the RGB star data to correctly colour the stars.
The Bubble Nebula (NGC 7635) in narrow band Hubble palette by David Davies from his Cambridge observatory in the UK. Equipment
- Telescope
- 8-inch Ritchey Chretien at f/8.
- Camera
- QSI 583 plus Astrodon RGB filters and Lodestar guider.
- Mount
- Modified Skywatcher NEQ6
- Software
- Deep Sky Stacker, Pixinsight and Photoshop
David Davies - (24 December 2016).
For more images from David please visit his Flickr Photostream.
