Observations of NGC145
These are the observations available for NGC145. If you have any of your own that you'd like to submit we'd love to put them on the website.
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A Couple of Arps from Cetus
After my best observation of Mars this apparition on the evening of 3rd Nov I hung around in Cetus and despite a bright gibbous Moon I caught another 2 of Halton Arp's finest! Both faint and challenging but I feel my set up performed well.
Firstly Arp 19 aka NGC 145 a 3-armed spiral, I got all the arms readily but wasn't able to see the arms completely 'wrap' the galaxy I was able to detect some brighter regions and a curious small loop in the NE region of the magnitude 13.2 galaxy that is reported as showing little or no detail in a 25" scope from dark skies.
A sketch of Arp 19 by Dale Holt from his Chippingdale observatory in Hertfordshire. Next I took in Arp 35 aka UGC 212 or PGC 1431 and PGC 1434 faint and small at magnitudes 15.5 0.3' x 0.1' and magnitude 15.0 1.5' x 0.7'.
A Sketch of Arp 35 by Dale Holt from his Chippingdale observatory in Hertfordshire. The brighter and larger of the two, PGC 1434, was obvious on the monitor at 5 seconds integration but I needed to put it up to 19 seconds and study the screen for a long time, almost an hour in total, before I completed the sketch, in this time every adjustment was made to the monitor and camera settings trying to maximise the view. This was true also of my study of Arp 145 it is not a simple matter to discern the faintest detail as one might think it would be. This kind of deep observation is very akin to the visual struggle one has with deep sky objects at the eyepiece.
Well the struggle was worth it, the detail I was able to pull out far exceeded my expectations with the connecting arm or faint filament as stated in Atlas of Arp peculiar galaxies extended almost to UGC 1431 from UGC 1434 in fact it may have indeed actually reached but the view was so vague and tentative that I left a gap in my sketch.
Hope these two are of interest? I enjoyed catching them and hope for a good few more over the coming months.
Dale Holt - (5 November 2020).
