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Bubble, Cave and Claw Nebulas (SS61 Ra).jpg
This is a wide-field portrait of a set of nebulas with colourful names but rendered here in monochrome: The Bubble Nebula at upper left; the Lobster Claw Nebula below it (somewhat obvious for its shape); the Cave Nebula at upper right; and the Wizard Nebula at bottom. The small round nebula above the Wizard is Sharpless 2-152. Just below it and very small is Sh2-148. The star cluster right of centre is NGC 7419.
The Bubble Nebula's spherical bubble is a little lost at this scale. It lies below the star cluster Messier 52. The Bubble is also NGC 7635. The Lobster Claw is Sharpless 2-157 and is sometimes called the Californietto. The Cave Nebula is Sharpless 2-155, while the Wizard is Sharpless 2-142 but also known as NGC 7380 though that designation applies to the star cluster associated with it. All are located on the Cassiopeia-Cepheus border. North is more or less up in this portrait orientation.
This is a stack of 12 x 16-minute exposures with the SharpStar 61mm EDPH refractor with its reducer at f/4.4, and with the Canon EOS Ra camera at ISO 3200, with a clip-in Astronomik 12nm H-alpha filter to block all but red H-a light for a monochrome portrait. Luminosity masks with Lumenzia helped bring out the faint nebulosity. The initial exposures were taken in moonlight. I added a slight blue colour grade for artistic effect.
The Bubble Nebula's spherical bubble is a little lost at this scale. It lies below the star cluster Messier 52. The Bubble is also NGC 7635. The Lobster Claw is Sharpless 2-157 and is sometimes called the Californietto. The Cave Nebula is Sharpless 2-155, while the Wizard is Sharpless 2-142 but also known as NGC 7380 though that designation applies to the star cluster associated with it. All are located on the Cassiopeia-Cepheus border. North is more or less up in this portrait orientation.
This is a stack of 12 x 16-minute exposures with the SharpStar 61mm EDPH refractor with its reducer at f/4.4, and with the Canon EOS Ra camera at ISO 3200, with a clip-in Astronomik 12nm H-alpha filter to block all but red H-a light for a monochrome portrait. Luminosity masks with Lumenzia helped bring out the faint nebulosity. The initial exposures were taken in moonlight. I added a slight blue colour grade for artistic effect.
- Copyright
- © Alan Dyer/AmazingSky.com
- Image Size
- 4500x6720 / 21.0MB
- www.amazingsky.com
- Contained in galleries
- Nebulas, NGC/IC Objects

