Messier 98 or NGC 4192, is an intermediate spiral galaxy about 44.4 million light-years away in slightly northerly Coma Berenices, about 6° to the east of the bright star Denebola (Beta Leonis). It was discovered by French astronomer Pierre Méchain on 1781, along with nearby M99 and M100, and was catalogued by compatriot Charles Messier 29 days later in his Catalogue des Nébuleuses & des amas d'Étoiles. It has a blueshift, denoting ignoring of its fast other movement (vectors of proper motion), it is approaching earth at about 140 km/s.
| Exposure |
8@300 sec (40 min) |
| ISO |
800 |
| Camera |
Nikon Z7 [8856 x 5504] |
| Optics |
Skywatcher Esprit 120mm Refractor, 840 mm focal length |
| Filter |
Clear |
| Guiding |
Phd2 using a ZWO 224MC on an Orion 60x240mm Guide scope |
| Controller |
Images taken using Kstars on an Odroid-N2 (Raspberry Pi clone) |
| Location |
Lower Sackville, Nova Scotia. |
| Date |
2022-04-21 |
| PixInsight Processing |
| WeightedBatchPreprocessing Script |
| Dynamic Crop |
| Automatic Background Extractor |
| MultiscaleLinearTransform |
| HistogramTransform |
| CurvesTransformation |
|
| Further tweaking in ImagesPlus to remove the dust bunnies; Lightroom; Topaz DeNoise AI |
