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Emil Andronic
Hemel Hempstead, UK
10/16/2022
03:00 am

Equipment Details:

To capture the photo I used the following equipment:
EQ6 equatorial mount
TS65 quadruplet Apo f6.5 refractor with a 420mm focal length
AQHY294M Pro Cmos camera, cooled at - 10°C
Antlia R, G, B and 3nm S, H, O 1,25” filters
Qhyccd QHY5L-IIM guide camera
9x50mm guidescope
Qhyccd Polemaster

Software used:
Eqmod, SGP - Sequence Generator Pro, PHD2, Stellarium, SharpCap for polar alignment

Date: 10.09 to 16.10.2022

Location: Hemel Hempstead, Hertfordshire, UK - bortle 5

Frames:
Antlia 3nm Narrowband H-alpha 36 mm: 73×300″(6h 5′) (gain: 1600.00) -10°C bin 1×1
Antlia 3nm Narrowband H-alpha 36 mm: 12×600″(2h) (gain: 1600.00) -10°C bin 1×1
Antlia 3nm Narrowband Oxygen III 36 mm: 50×600″(8h 20′) (gain: 1600.00) -10°C bin 1×1
Antlia 3nm Narrowband Sulphur II 36 mm: 60×300″(5h) (gain: 1600.00) -10°C bin 1×1
Antlia 3nm Narrowband Sulphur II 36 mm: 9×600″(1h 30′) (gain: 1600.00) -10°C bin 1×1
Antlia V-Pro Blue 36 mm: 10×60″(10′) (gain: 1600.00) -10°C bin 1×1
Antlia V-Pro Green 36 mm: 10×60″(10′) (gain: 1600.00) -10°C bin 1×1
Antlia V-Pro Red 36 mm: 10×60″(10′) (gain: 1600.00) -10°C bin 1×1

Total integration time 23 hours and 25 minutes

Post-processing Details:

Stacked in AstroPixel Processor and processed in Pixinsight and Photoshop CC 2022

Image Details:

Sharpless 119, also known as the Clamshell Nebula, is a large emission nebula covering about three degrees of the sky located around 1800 light-years away in the constellation Cygnus. It is not often photographed, likely the result of its proximity to its photogenic neighbours, the North America and Pelican nebula, just two degrees east. The large, bright star in the center is 68 Cygni and is about 5th magnitude. It also filled with some nice Bok globules and dark dust lanes annotated in the LDN and LBN database.