Abell 84 from my own „Sterntaucher“ observatory

In 2017, I captured images of the planetary nebula Abell 84, located in the constellation Cassiopeia. This faint and extended nebula presents a delicate shell structure, best revealed through narrowband imaging.

For this project, I used a dual-telescope setup: the Hα and [O III] data were acquired with my 10” Newtonian telescope, while the RGB frames were taken with my small apochromatic refractor. The RGB data were later upscaled to match the narrowband resolution for seamless integration and color balance.

Data calibration, registration, and final image processing were all performed in PixInsight.

The result was as follows:

The images were taken with the following equipment:

• Location: Krefeld, Germany
• Telescope: 10″ Newton ohne Namen – TSQ-65ED Apo
• Focal length [mm]: 1000 – 420
• Focal ratio: 3.9 – 6.5
• Mount: Skywatcher EQ8
• Camera: Moravian G2 8300 FW – QSI 583WS
• Filter: Hα:[OIII] – R:G:B
• Exposure time [min]: 310:280 – 240:180:80
• Resolution: 1.11″/px – 2.95″/px