NGC 4725 and LoTr 5 from my „Jade“ observatory

This is one of the first images with my new equipment on the second pier „Deep Sky Pier“ in my „Jade Observatory“.

NGC 4725 is an intermediate barred spiral galaxy and Longmore-Tritton 5 is a planetary nebula, both situated in the constellation Coma Berenices. LoTr 5 has the highest galactic latitude of any known planetary nebula.

Data calibration, registration and the final processing was done with PixInsight. The result was as follows:

There are so many quasars in this image that I can only show those with a redshift greater than 3.

The most distant of them is:

SDSS J125710.86+253334.6.9 with a redshift of 3.42 and an apparent mag_v of 20.16 (SDSS DR17).

Here is an overview of the used equipment and the exposure times:

• Date: April 2025
• Location: Varel
• Telescope/Lense: 6″ Lacerta Newton
• Focal length [mm]: 600
• Focal ratio: 4
• Mount: Skywatcher EQ 8
• Camera: Lacerta Deepsky 2600 M
• Autoguiding: Off-Axis with ZWO Asi 120 MM Mini
• Filter: L:R:G:B:[OIII]
• Exposure time [min]: 120:55:60:60:240
• Resolution: 1.31/px