NCG 7822 - False Colour and True colour.

NGC 7822 False colour version - 29th May 2021

NGC 7822 True colour version - 29th May 2021

Click on the image to view full size! Image Acquisition Details: 57x 180s Hydrogen Alpha 27x 180s Sulphur ii

43x 180s Oxygen iii

Total Integration time: 3.5 hrs.

Equipment:

• Explore Scientific ED127CF APO telescope

• ZWO ASI 294 MM Pro Camera @ -10 c

• ZWO Ha, Sii, Oiii, R filters

• Skywatcher EQ6-R mount

• Guided using ASI 290MM + Off axis Guider • ASIair Pro.

About this image and NGC7822:

Update - 29th May 2021 - I finally got round to processing the various sessions of data that I had collected on this target and decided I had enough to create both a True colour version as well as a false colour version. This image is in the central portion of the NGC 7822 nebula, the who nebula extends well beyond this image and is about 4 times larger that this image alone. This image is taken specifically in the Hydrogen Alpha wavelength, in future sessions when I collect more data for the Oxygen and Sulphur I'll be able to create a wonderful full colour image. NGC7822 is an active star forming region contains a cluster of young stars known collectively as Berkeley 59 encompassed by a large emission nebula known as Shapeless 171. This is primarily a hydrogen emission nebula with a mix of other gases and dust. The dust creates some strikingly darker patches and filaments creating a visually interesting structure.

Where in the sky is it?

NGC 7822 can be found right between the constellations of Cassiopeia and Cepheus, check the sky map below (click to expand), the small red box shows the section of the nebula imaged.