NGC 6820 and NGC6823

NGC 6820 is a small reflection nebula near the open cluster NGC 6823 in Vulpecula. The reflection nebula and cluster are embedded in a large faint emission nebula called Sh 2-86. The whole area of nebulosity is often referred to as NGC 6820.

Open star cluster NGC 6823 is about 50 light years across and lies about 6000 light years away. The center of the cluster formed about two million years ago and is dominated in brightness by a host of bright young blue stars. Outer parts of the cluster contain even younger stars. It forms the core of the Vulpecula OB1 stellar association.

Source Wikipedia

Equipment used:

Mount: Dark Frame hypertuned EQ6

Modified Sky-Watcher Explorer 200p (Baader Diamond Steeltrack focuser)

Aplanatic coma corrector

ASI294MM Pro Cmos camera, cooled at - 15°C

8x1.25" ZWO USB filterwheel

Chroma 1.25" RGB and 3nm SHO filters

ZWO ASI290m Mini guide camera

ZWO OAG

Qhyccd Polemaster

Software used:

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

Date: 12.06.2024 to 17.09.2024

Location: Hemel Hempstead, Hertfordshire, bortle 5

Frames:

Chroma Blue 1.25": 10×60″(10′)

Chroma Green 1.25": 10×60″(10′)

Chroma H-alpha 3nm Bandpass 1.25": 50×600″(8h 20′)

Chroma OIII 3nm Bandpass 1.25": 50×600″(8h 20′)

Chroma Red 1.25": 10×60″(10′)

Chroma SII 3nm Bandpass 1.25": 105×600″(17h 30′)

Total integration time:

34h 40′

Stacked and calibrated in AstroPixel Processor and processed in Pixinsight (with help from Blur Xterminator, Star Xterminator and Noise Xterminator) and Photoshop CC 2024

Copyright: Emil Andronic