Object of the Week November 3,2019-IC 1757 (Catch some billion year old light)

[Jimi Lowrey]

IC 1757

Cetus

RA 01 57 11
DEC -00 28 26

Type E?

Mag 15.9
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This is my last observation of my Far Out Galaxies list. The list is composed of the NGC/IC galaxies that have a light travel time of one billion light years or more.
IC 1757 and nearby IC 1756 were found by E E Barnard visually but I have not been able to find the date or the telescope that he used to find them so for now its mystery.

4B8566F7-0DAB-4103-AE64-EABF59E506A9.jpeg

I observed IC 1757 and 1756 last week under below average conditions. The edge on IC 1756 was seen as a low surface brightness streak embedded in some bright stars @540X. IC 1757 was seen East of IC 1756 and was smaller with a brighter nucleus and faint halo. Both objects were direct vision. It is noteworthy that the edge on IC 1756 Z=0.02245 was way foreground of IC 1757. IC 1757 has a Z=0.0805 with a light travel time of 1.07GLY.

It was very satisfying for me to finish the Far out galaxy list to know that I have visually observed the most distant galaxies in the NGC/IC catalog.

So if you want to catch some billion year old light this Fall Give IC 1757 A GO.

[Howard B]

Steve Gottleib and I observed this with Jimi. My notes:

"IC 1756 is the edge-on galaxy and the galaxy right next to it in my sketch is IC 1757, which has a one billion year light travel time! 545x, 21.41 SQM."

IC1756_57.JPG IC1756_57_invert.JPG

As Jimi noted, the observing conditions were not the best, but were unaccountably consistent for the four nights we observed - the SQM was almost always between 21.41 and 21.49. The sky usually looked darker than that though, and the eyepiece views were often quite good.

[Uwe Glahn]

Nice pair Jimi. Visited last new moon under good transparency but soso seeing.

27", 419x, NELM 6m5+, Seeing IV
Attachment 3762