Bubble Nebula WIP (Work in Progress)

NGC 7635, also called the Bubble Nebula, Sharpless 162, or Caldwell 11, is a H II region emission nebula in the constellation Cassiopeia. It lies close to the direction of the open cluster Messier 52. The "bubble" is created by the stellar wind from a massive hot 8.7 magnitude young central star. The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow. It was discovered in 1787 by William Herschel. The central star is thought to have a mass of 10-40 Solar masses.

Color Palette - Natural Colors:

Red Channel: H-alpha

Green Channel: OIII

Blue Channel: OIII + 15% H-alpha

Image Data: Bubble Nebula & Messier 52

Lens / Scope: William Optics Megrez 102 S.V. with WO Type II 0.8x FF/FR
Focal Length: 571.2mm 
F/stop: f/5.6
Exposure: 

Ha   - Stack of 25 900-second exposures (6:15 hours total exposure)

OIII - Stack of 23 900-second exposures (5:45 hours total exposure)

Mount: Sky-Watcher HEQ5 Pro SynScan GOTO (CdC and EQMOD Control)
Guiding: Sky-Watcher 80 with QHY5 (PHD Control)
Camera: Canon 500D (Digital Rebel T1i) Baader Mod (EOS Utility Control)
Mode: RAW
ISO: 800
White Balance: Daylight
Filters: Astronomik Ha, OIII 12nm
Dates: Ha - December 06, 2013 ; OIII - November 09, 2013
Location: Beja, Portugal
Calibration: Darks, Flats, Bias.
Processing: Calibrated, aligned and stacked in DSS. Post-processing in Photoshop.

Pelican Nebula in H-alpha (Hα)

The Pelican Nebula (also known as IC 5070 and IC 5067) is an H II region associated with the North America Nebula in the constellation Cygnus. The gaseous contortions of this emission nebula bear a resemblance to a pelican, giving rise to its name. The Pelican Nebula is located nearby first magnitude star Deneb, and is divided from its more prominent neighbour, the North America Nebula, by a molecular cloud filled with dark dust.

H-alpha (Hα) is a specific red visible spectral line in the Balmer series created by hydrogen with a wavelength of 656.28 nm, which occurs when a hydrogen electron falls from its third to second lowest energy level. It is difficult for humans to see H-alpha at night, but due to the abundance of hydrogen in space, H-alpha is often the brightest wavelength of visible light in stellar astronomy.

Image Data: Pelican Nebula

Lens / Scope: William Optics Megrez 102 S.V. with WO Type II 0.8x FF/FR 
Focal Length: 571.2mm 
F/stop: f/5.6 
Exposure: Stack of 14 900-second exposures (3:30 hours total exposure) 
Mount: Sky-Watcher HEQ5 Pro SynScan GOTO (CdC and EQMOD Control) 
Guiding: Sky-Watcher 80 with QHY5 (PHD Control) 
Camera: Canon 500D (Digital Rebel T1i) Baader Mod (EOS Utility Control) 
Mode: RAW 
ISO: 800 
White Balance: Daylight 
Filter: Astronomik Ha 12nm
Date: August 09, 2013 
Start Time: 23:18 
Location: Beja, Portugal 
Calibration: Darks, Flats, Bias. 
Processing: Calibrated, aligned and stacked in DSS. Post-processing in Photoshop.