NGC 3198

[tomato]

Here is 6.4 hours on NGC 3198, a barred spiral galaxy in Ursa Major. It is some 47 million light years away and was discovered by Lord Rosse sometime before 1850. Did this just happen to drift across the FOV of the Leviathan of Parsonstown I wonder, or did he have a more user friendly scope for sweeping the sky at his disposal?

This was captured over 4 sessions, trying to avoid the moon and frequent high cloud. Most of the data was binned 2x2 but in error I took some Lum and blue data at full resolution. However, after suitable calibration this was combined in APP no problem. The star to the lower left of the galaxy that looks like it's trailed is a binary, they were resolved on the individual subs but have merged together after my attempts at processing.

L 65 x 3 min

R 28 x 3 min

G 12 x 3 min

B 23 x 3 min

Dual Esprit 150/ASI 178 rig, calibrated and stacked in APP, processed in APP, AP and GIMP.

Thanks for looking.

 

[Whistlin Bob]

Nice. Loving the faint galaxies you've caught in the background.