NGC/IC Project Restoration Effort

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NGC3830

 

Basic Information


Location and Magnitude


Right Ascension: 11:42:32.9
Declination: +26:29:21
Constellation: LEO
Visual Magnitude: 13.4

Historic Information


Discoverer: Herschel J.
Year of discovery: 1832
Discovery aperture: 18.3

Observational


Summary description: eF
Sub-type: E2

Corwin's Notes

===== NGC 3830 is probably the same galaxy as NGC 3826. The only observer to see N3830 (= h956) was John Herschel -- and his one observation is doubtful. His description reads (in full): "Cloudy; hardly discernable." This is from Sweep 416 of 19 April 1832. JH's position for N3830 follows that for NGC 3826 (= H II 341 = h954) by 43 seconds of time; the declinations are identical. In addition, N3826 was seen during three sweeps (115, 343, and 417), all different from the single sweep during which N3830 was found. JH's three positions for N3826 are all in agreement. My guess is that because of the clouds, JH did not zero Sweep 416 on stars as well as he usually did. This half-baked idea could be checked by comparing JH's RA's for other objects in the same sweep with modern RA's: are they also off in RA by about 40 arcsec of time? See NGC 898 where this sort of error has undoubtedly been made. Another, probably more correct guess, is that JH simply made an error in the RA.

Steve's Notes

===== NGC 3830 17.5" (4/15/93): very faint, very small, round. Forms an equilateral triangle with two mag 13 stars 1.5' W and 1.5' SW. NGC 2826 lies 10' SW. This is an unresolved double system. The identification of NGC 3830 is uncertain and the number may be a duplicate observation of NGC 3826.