NGC 3198 from my own „Sterntaucher“ observatory
My next project in 2021 was the galaxy NGC 3198, located in the constellation Ursa maior.
Here is an overview of the used equipment and the exposure times:
| Equipment | Telescope 1 | Telescope 2 |
| Location and date | Krefeld, in March 2020 | Krefeld, in March 2020 |
| Telescope/Lense | 10″ Newton ohne Namen | TSQ-65ED Apo |
| Focal length [mm] | 1000 | 420 |
| Focal ratio | 3.9 | 6.5 |
| Mount | Skywatcher EQ8 | Skywatcher EQ8 |
| Camera | Moravian G2 8300 FW | Moravian G3 16200 FW |
| Autoguiding | DMK21 AU04 on TSQ-65ED | DMK21 AU04 on TSQ-65ED |
| Filter | CLS | R:G:B |
| Exposure time [min] | 900 | 180:180:165 |
| Resolution | 1.11″/px | 2.95″/px |
Data calibration and registration and the final processing was done with PixInsight. The RGB Data was upscaled to the luminance data. The result was as follows:
The faintest star in my image has an apparent magnitude of 21.3 magV (SDSS DR15).
The two highest redshift quasars [Flesh 2015] in the image are:
SDSS J101844.41+452504.7 z=4.44 magG=19.9 (Gaia DR2)
SDSS J101926.63+452100.9 z=2.85 magG=19.1 (Gaia DR2)
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