FUZZY SPOT,  November 2001, Triangulum

Triangulum is a small constellation near Pegasus and Andromeda.  The constellation dates back to about 270 BC from the classical astronomical work, the Phainomena of Aratos.  The original triangle was more of an equilateral, consisting of Alpha, Beta, and 12, rather than the current elongated triangle consisting of Alpha, Beta, and Gamma.  Sitting out of the Milky Way, this constellation contains mostly galaxies, although there is an open cluster here.  The showpiece object is M-33, the Pinwheel Galaxy.

        NGC 598 (01h33.9 +30 40)  This is M-33.  At 35X, I saw it in the 10" scope as very very large, taking up at least 1/2 the field of view, elongated NE/SW, very bright, and containing a large bright nucleus.  No spiral structure was seen, but the emission nebula, NGC 604 was seen on the end.  The galaxy sits in the middle of a triangle of very bright stars.  Using the UHC filter did not bring out any more detail.

        NGC 670 (01h47.4 +27 52)  In the 20" scope, this galaxy was seen at somewhat small, pretty bright, containing a much brighter middle with a slightly brighter non-stellar nucleus.  It is elongated about 4:1 WNW/ESE.  There are  no stars involved, but the star field around the galaxy is nice.

        NGC 672 (01h47.9 +27 25) I observed this galaxy in the 20" scope as pretty small, a little faint, brightening slightly to the middle but with no nucleus.  It is elongated about 4:1 ENE/WSW.  There seems to be some mottling on the middle/halo border.  There are stars on either end of the halo, and possibly a faint star is involved.

        NGC 684 (01h50.2 +27 38) This galaxy is somewhat bright in the 20" scope, pretty small, and elongated 3:1 E/W. The middle brightens up nicely and has a stellar core.  To the E of the galaxy is a nice arc of stars.

        NGC 777 (02h00.2 +31 25) and 778 (02h00.2 +31 17)  In the 10" scope, I only saw 777.  It was observed as very faint, elongation uncertain, containing a pretty bright middle and a halo that comes and goes.   In the 20" scope, it was pretty bright, somewhat small, round, and gradually brighter to the middle with a suddenly much brighter non-stellar nucleus.  It forms an almost equilateral triangle with 2 bright stars.  To the SW is 778.  It was seen as pretty faint, somewhat small, and elongated E/W about 3:1.  It contains a slightly brighter middle but no nucleus.

        NGC 890 (02h22.0 +33 16)  From a very early observation of this galaxy in the 10" scope, I described it as extremely faint, seems elongated with averted vision, and contains a possible stellar center.

        Cr-21 (01h50.1 +27 15)  This is the open cluster of the constellation.  In the 20" scope, I saw it as very bright, pretty small, poor and loose.  There are 3 levels of stars with 15 stars counted plus several threshold stars.  The main pattern forms a nice arc opening to the E.  On the W side there is a nice double.  This nice cluster is well detached from the background stars.

Herschel 400 Objects
SAC’s 110 Best of the NGC Objects