Faint structure around ngc 2841

[wimvb]

While clouded in and waiting for knee surgery, I started playing with data from the Liverpool Telescope (http://telescope.livjm.ac.uk/). I downloaded all the NSO data on NGC 2841, a very nice flocculent galaxy in Ursa Major, and started processing in PixInsight. While I couldn't get anywhere with the colour of this galaxy, the luminance created from the combined filters revealed structures that I've never seen before in an image of this galaxy.

I combined a colour image of NGC2841 with an inverted superstretch of  the combined SDSS-r, Bessell-V, and Bessell-B filters.

RGB image:

• Red: 35 frames SDSS-r'
• Green: 16 frames Bessell-V
• Blue: 20 frames Bessell-B

L image:

integration of all 71 frames, approximately 100 minutes total exposure time. Field size: roughly 10 x 10 arcminutes.

The arrow points at a weak loop, and the circle shows a slight density increase in the weak structure.

[Rodd]

Interesting.  Without the non inverted image though its hard to tell what these features might be.  Obviously you feel they are not the typical edges of normal galaxy features--but that is a tough one without the regular image

Rodd

 

Edit:  I see now the regular image inside the oval--it would still be good to see the normal image of teh areas in question though--definitely not the edge of the disc, though

Edited November 19, 2019 by Rodd

[wimvb]

I just stumbled across this article by the Dragonfly team

https://scholar.google.com/scholar?start=20&q=Ngc2841+galaxy&hl=sv&as_sdt=0,5#d=gs_qabs&u=%23p%3DWjSypV0skbIJ

It seems that the structures extend a lot further out than what is visible in the 100 minutes exposure that I processed. Cool! 

I wonder how deep amateur gear would allow one to image this object. Maybe a challenge for galaxy season?