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Altair, Tarazed and Barnards E (Draco62 RMod).jpg
This frames the bright blue-white star Altair in Aquila, with its companion stars reddish Tarazed above it and dimmer Alshain below it.
The field is also laced with dark dusty nebulas superimposed onto the rich Milky Way starfield and obscuring the more distant stars behind them. Most prominent is the very opaque U-shaped Barnard 143, with paler B142 below it. Together they form what is called Barnard's E, as visually they look like a dark letter E in the eyepiece, and Edward Emerson Barnard was the first to catalogue and correctly describe the nature of dark nebulas. Some of the other less opaque dark nebulas in the field also carry B designations. All appear yellow-brown from their dim glow in red or infrared light, likely from their absorption of starlight and re-emitting it as heat.
The field of view is about 8.2° by 5.5°, similar to binoculars.
Technical:
This is a stack of 15 x 4-minute exposures with the Founder Optics Draco 62 astrograph with its f/3.9 Reducer, and the astro-modified Canon EOS R camera at ISO 800. No filter was employed here. On the Star Adventurer GTi mount autoguided with the MGEN3 autoguider. Taken at the Southern Alberta Star Party in the Cypress Hills in September 2024. A colored rainbow-like reflection arcs off Altair, which might be from the telescope optics or from the IR Cut filter in the camera.
The field is also laced with dark dusty nebulas superimposed onto the rich Milky Way starfield and obscuring the more distant stars behind them. Most prominent is the very opaque U-shaped Barnard 143, with paler B142 below it. Together they form what is called Barnard's E, as visually they look like a dark letter E in the eyepiece, and Edward Emerson Barnard was the first to catalogue and correctly describe the nature of dark nebulas. Some of the other less opaque dark nebulas in the field also carry B designations. All appear yellow-brown from their dim glow in red or infrared light, likely from their absorption of starlight and re-emitting it as heat.
The field of view is about 8.2° by 5.5°, similar to binoculars.
Technical:
This is a stack of 15 x 4-minute exposures with the Founder Optics Draco 62 astrograph with its f/3.9 Reducer, and the astro-modified Canon EOS R camera at ISO 800. No filter was employed here. On the Star Adventurer GTi mount autoguided with the MGEN3 autoguider. Taken at the Southern Alberta Star Party in the Cypress Hills in September 2024. A colored rainbow-like reflection arcs off Altair, which might be from the telescope optics or from the IR Cut filter in the camera.
- Copyright
- © Alan Dyer/AmazingSky.com
- Image Size
- 4480x6720 / 43.0MB
- www.amazingsky.com
- Contained in galleries
- Star Clusters, Stars, My Latest, Nebulas
