The Eastern Veil nebula (also known as Caldwell 33) is a cloud of heated and ionized gas and dust in the constellation of Cygnus and is located at around 1470 light-years from Earth. It is part of the Cygnus Loop which is a faint supernova remnant that exploded aproximately 7000 years ago. From the moment the source star exploded and until now, the Cygnus Loop supernova remnant expanded to a diameter of roughly 3° on the sky (that almost 6 full moons). The red hues in this image are from ionized hydrogen content of gas clouds that emit light in the H-alpha wavelength, while the cyan hues are from oxygen ions.
Image:
Equipment:
- Nikon D90 (Astro-Mod)
- Sky-Watcher Star Adventurer
- Sky-Watcher Tripod
- AF-S NIKKOR 500mm f/5.6
- Bahintov Mask
- Intervalometer
- Laptop
- All Sky Plate Solver
- Sharpcap
- Stellarium
Acquisition:
- Taken from a bortle class 2 zone
- 407 x 1″ light frames – total 6 hours 47 minutes (taken across 2 nights)
- 59 dark frames
- 400 flat frames
- 500 bias frames
Processing:
- Manually stacked in pixinsight
- Crop to remove stacking artifacts
- Image solver
- DBE
- Photometric Color Calibration
- Deconvolution
- Noise Reduction (TGV + MMT)
- HSV reparation
- Masked stretch
- Star reduction x2
- Curves with and without masks
- Sharpening
Annotated Image
2 thoughts on “The Eastern Veil Nebula”
Thank you! And yes, I did mean to write 407 X 1′ – I always get confused between the notation for minute and second.
Fantastic image! I would never have thought you could capture the Veil this well with a DSLR and telephoto lens.
One note, though – you say you captured 407 X 1″ light frames. You must have meant 407 X 1′ (one minute vs. one second), correct?