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IC1396 and Area in Cepheus (RedCat EOS Ra).jpg
This wide-field image frames the prominent emission nebula IC 1396, at left, and the faint arcs of Sharpless 2-129 at right, in southern Cepheus. IC 1396 contains the dark Elephant Trunk Nebula at about the 3 o’clock position in the nebula. At the top edge of the nebula is the orange giant star Mu Cephei, aka Herschel’s Garnet Star. The dark nebula at top left is Barnard 169-70-71. The dark nebulas at the bottom of IC 1396 are B160, B162 and the snake-like B365. A small blue reflection nebula below and left of the Sharpless complex is VandenBurgh 140.
This is a blend of filtered and unfiltered shots, all with the William Optics RedCat 51mm astrographic refractor at its native f/5 and with the Canon EOS Ra: 6 x 8-minutes at ISO 1600 without the filter and 4 x 12-minutes at ISO 5000 with the Optolong L-Enhance filter, which reduces light by about 2 to 3 f-stops but really makes the H-alpha nebulas stand out. All stacked, aligned and blended in Photoshop. LENR employed on all frames on this warm summer night to ensure the most accurate dark frame subtraction of thermal noise but at the cost of doubling the capture time.
This is a blend of filtered and unfiltered shots, all with the William Optics RedCat 51mm astrographic refractor at its native f/5 and with the Canon EOS Ra: 6 x 8-minutes at ISO 1600 without the filter and 4 x 12-minutes at ISO 5000 with the Optolong L-Enhance filter, which reduces light by about 2 to 3 f-stops but really makes the H-alpha nebulas stand out. All stacked, aligned and blended in Photoshop. LENR employed on all frames on this warm summer night to ensure the most accurate dark frame subtraction of thermal noise but at the cost of doubling the capture time.
- Copyright
- © 2020 Alan Dyer
- Image Size
- 6689x4460 / 33.6MB
- www.amazingsky.photoshelter.com
- Contained in galleries
- Nebulas, Stars, NGC/IC Objects

