Astrophoto: Sharpless 86 – 07/22

The new workflow shows his power also on duo-narrowband material.
The picture combines HA/OIII nebula with RGB stars.

Sharpless 86 - NGC 6823
Sharpless 86 - NGC 6823

8,5 hours of RGB and duo narrowband data. Processed with Pixinsight.

High resolution on Flickr:

Sharpless 2-86
Sharpless 2-86
The main object in this picture is an object from the Sharpless Catalog: Sh 2-86, a midrange bright object without a Messier or NGC number. A catalog with only H-II emission nebulae. In the middle of the nebula is the the open cluster NGC 6823. An object with a visual brightness of 7,1 mag in a distance of about 6.000 lightyears and in the upper right of the cluster, the 0,5’x0,5′ small reflection nebula NGC 6820 with a visual brightness of 15 mag.

Comparison – 2022 vs 2024

Technical overview

TelescopeVIXEN ED80sf
Focal Length600mm
Aperture ratio7.5
Erecting LenseTSFlat2
FilterOptolong UV/IR-Cut, RGB
Op. L-Extreme, Duo-Narrowb.
MountSkywatcher HEQ-5
Goto-ControlEKOS
Mount ControlINDI
Guiding Scope Focal Length162 mm
Guiding Camera Chip4.8mm x 3.6mm, 8bit
Guiding Camera Resolution1280×960
Guiding SoftwareEKOS, INDI
Dithering3 pixel
CameraCANON EOS M100(a)
Methodfocal projection
Camera angle-90° (Stellarium)
Camera ControlEKOS, INDI, Gphoto2
Photography Date07/04/2022 RGB
07/15/2022 Duo-Narrowb.
07/16/2022 Duo-Narrowb.
Exposure-Time Lights17x300s RGB
77x300s Duo-Narrowb.
Correction framesFLATS, BIASES
SensitivityISO 400 RGB
ISO 800 Duo-Narrowb.
Processing Date07/21/2022
Reprocessing Date01/05/2024
Stacking, IntegrationPixInsight
Processing SoftwarePixInsight
Image EditingAffinity Photo
Reprocessing SoftwarePixInsight
Capture PlaceKoblenz, Germany
LightpollutionBortle 5
Scattered lightstrong

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