Pt 3 ...
About this time I had a bit of a wander up to the main observing field to see how people were getting along. There were several there who were doing their SASI modified Messier Marathon and they were all motoring along nicely. I just happened to get there when Tony Austin was on M67 and enjoyed the view through his C8. M67 was in a recent article I did for AS&T and it was also touched upon in a talk I was giving on the Sat arvo, so I was nice to see. After a quick cuppa I was on to Virgo …
NGC 4543 Galaxy *
RA: 12h 35m 20.3s Dec: +06° 06' 54"
Mag: 14.5 S.B.: --- B-V: --- Size: 0.7'x0.5' Class: E3
P.A.: 172 Inclination: --- R.V.: --- Source: PGC *
This is a fairly non-descript eg looking like a very distant elliptical type and is round, just under 1' diameter -- maybe 50" growing from indistinct edges evenly and slightly at first and then nr centre more strongly to a weak faint *ar nucleus. No *s associated.
IC 3576 Galaxy *
RA: 12h 36m 37.4s Dec: +06° 37' 18"
Mag: 14.0 (B) S.B.: --- B-V: +0.54 Size: 2.3'x2.1' Class: Sm
P.A.: 29 Inclination: 1 R.V.: +1075 Source: RC3 *
Without DSC, this would be very difficult to track down. Very, very LSB and diffuse eg which is hard to see at first. Good size, maybe 1.75' diameter and round, very diffuse edges and has pretty much consistent SB with a hint of a tiny weak spot dead centre.
M 90 NGC 4569 Multi-Galaxy Sys *
RA: 12h 36m 50.1s Dec: +13° 09' 48"
Mag: 10.3 (B) S.B.: --- B-V: +0.72 Size: 9.6'x4.3' Class: SAB(rs)ab
P.A.: 23 Inclination: 6 R.V.: -311 Source: RC3 *
IC 3583 Multi-Galaxy Sys *
RA: 12h 36m 43.8s Dec: +13° 15' 31"
Mag: 13.3 (B) S.B.: --- B-V: --- Size: 2.2'x1.1' Class: IBm
P.A.: 0 Inclination: --- R.V.: +1009 Source: RC3 *
This eg is a companion to M90, about 5' N of the centre of M90. M90 is a huge and bright eg in PA 15, with a large candle-flame shaped halo 7.5' x 2.5'. Good SB smooth textured halo growing slightly to the centre. At centre is a brilliant 12th-13th mag stellar nucleus surrounded by a core only a little larger than that nucleus. Really, really beautiful.
-83 is found next to the faintest star at the RA of a RA tri made up by mag 11, 12 & 13 *s. The eg is basically a small amount of LSB surrounding that mag 13 *. Difficult to discern its extent, probably no more than 30-40" diameter mainly to the N of the *.
NGC 4587 Galaxy *
RA: 12h 38m 35.4s Dec: +02° 39' 26"
Mag: 14.5 (P) S.B.: --- B-V: --- Size: 1.0'x0.4' Class: SA(r)0^:
P.A.: 48 Inclination: --- R.V.: +901 Source: RC3 *
This is a small mod faint elong eg in PA 45 beside a long almost RA I Tri of mag 12 & 13 *s. Oval, reasonable SB 1.0' x 20" grows broadly and slightly to centre without apparent core or nucleus.
NGC 4591 Galaxy *
RA: 12h 39m 12.5s Dec: +06° 00' 47"
Mag: 14.0 (B) S.B.: --- B-V: --- Size: 1.5'x0.7' Class: S?
P.A.: 37 Inclination: 5 R.V.: +2450 Source: RC3 *
This is a fairly plain-jane small oval eg of mod SB, seems to be slightly elong in about PA 45, 50" x 30", no *s immediately associated, grows broadly and slightly to centre without apparent zones or nucleus.
x185 27' TF
IC 3631 Galaxy *
RA: 12h 39m 48.0s Dec: +12° 58' 25"
Mag: 14.6 (P) S.B.: --- B-V: --- Size: 1.0'x0.7' Class: S?
P.A.: 86 Inclination: --- R.V.: +2839 Source: RC3 *
This is a small plain little eg that is slightly elong in PA 90, has a small, occasional stellaring visible in the centre and overall it is oval, 40" x 20, seems to grow slightly to the axis nr centre.
NGC 4596 Galaxy *
RA: 12h 39m 56.1s Dec: +10° 10' 33"
Mag: 11.4 (B)S.B.: --- B-V: +0.94 Size: 4.4'x3.1' Class: SB(r)0+
P.A.: 135 Inclination: 1 R.V.: +1874 Source: RC3 *
Dunno how this one eluded the log for so long. Found just nr a longish scalene tri of mags 9, 10 & 11 *s. Seems slightly elong in PA 90, quite good SB, 2.25' x 1' as an oval shape with LSB edges, growing slightly to a large circular core zone which is slightly brighter than the halo and contains a stellaring at centre.
NGC 4598 Galaxy *
RA: 12h 40m 12.0s Dec: +08° 23' 02"
Mag: 13.7 (P) S.B.: --- B-V: --- Size: 1.3'x1.0' Class: SB0
P.A.: 89 Inclination: 1 R.V.: +1961 Source: RC3
This eg appears in a pretty blank field but has a mag 15 * just off the southern end of the halo. Very small, soft LSB halo probably 50" diameter growing broadly and weakly to centre where there is a fairly large weakly brighter core zone occasionally visible with a whiff of a stellaring occasionally at centre.
IC 3672 (IC 809) Galaxy *
RA: 12h 42m 08.7s Dec: +11° 45' 15"
Mag: 14.5 (P) S.B.: --- B-V: --- Size: 0.9' Class: E
P.A.: --- Inclination: --- R.V.: +247 Source: RC3 *
This eg is nearby to M59 -- N by 7' and also 2.5' N of a mag 10.5 *. Small diffuse patch of haze 30-40 " diameter. Growing from indistinct edges broadly and slightly to centre with n evidence of core or nucleus.
x185 27' TF
NGC 4626 Galaxy *
RA: 12h 42m 25.3s Dec: -07° 02' 42"
Mag: 12.7 S.B.: --- B-V: --- Size: 1.3'x0.4' Class: SB(s)bc: sp
P.A.: 40 Inclination: --- R.V.: --- Source: RC3 *
NGC 4628 Mkn 1333 Galaxy *
RA: 12h 42m 25.3s Dec: -06° 58' 14"
Mag: 14.5 S.B.: --- B-V: --- Size: 1.7'x0.5' Class: SA(s)b: sp
P.A.: 46 Inclination: --- R.V.: +2696 Source: RC3 *
PGC 42600 Galaxy *
RA: 12h 41m 50.9s Dec: -07° 10' 12"
Mag: 14.6 S.B.: --- B-V: --- Size: 1.3'x0.6' Class: SA0^
P.A.: 116 Inclination: --- R.V.: --- Source: RC3 *
The two NGC eg's are a really lovely pair of nearly identical twin edge-on spirals. Both in PA 45. -26 is slightly the smaller and fainter, it is near a couple of mag 12 *s with which it forms a Tri, 1.5' x 10" in PA 45 growing slightly nr the axis nr centre where there is a slightly brighter small streak-like core and an occasional stellaring dead centre.
-28 is to the N of -26 by about 3' slightly lower SB than -26 but a little larger 1.75' x 10" growing weakly to centre with no really apparent core but dead centre is a very faint stellaring.
PGC 42600 is about 12' SW and little more than a small, 30" diameter patch of weak for with almost no central brightening.
An image is here:
http://stdatu.stsci.edu/cgi-bin/dss_...e&fov=NONE&v3=
x185 27' TF
IC 3718 Galaxy *
RA: 12h 44m 46.0s Dec: +12° 21' 12"
Mag: 14.1 (B) S.B.: --- B-V: --- Size: 2.7'x0.9' Class: S
P.A.: 72 Inclination: 6 R.V.: +971 Source: RC3 *
In an almost blank field this is a really dim eg. It is nr a tri made up my 14th and 15th mag *s. A very LSB, gossamery spindle-shaped patch with brightening weakly to centre with no apparent core or nucleus. 1.5' x 30" in PA 60.
x185 27' TF
IC 3720 Galaxy *
RA: 12h 44m 47.6s Dec: +12° 03' 49"
Mag: 15.0 S.B.: --- B-V: --- Size: 1.7'x0.9' Class: E?
P.A.: 130 Inclination: --- R.V.: --- Source: RC3 *
This eg is like IC 3718 (previous) only even lower in SB. Seems elong in PA 150, longish halo 1.75' x 15" with no apparent central brightening at all. There is a very faint star at the southern tip -- about mag 15.5.
x185 27' TF
NGC 4671 Mkn 1334 Galaxy *
RA: 12h 45m 47.6s Dec: -07° 04' 10"
Mag: 14.0 S.B.: --- B-V: --- Size: 1.6'x1.0' Class: E+ pec:
P.A.: 143 Inclination: --- R.V.: --- Source: RC3 *
This is a fairly small non-descript looking little eg that is fairly faint but has reasonable SB. Almost looks stellar at first glance and makes an almost RA tri with a couple of mag 14.5 *s to the NW and SW only an arc-min or so away. Round, just under 1' diameter grows evenly and slightly to the centre and at centre more strongly to a mag 15 *ar nucleus dead-centre.
NGC 4680 Galaxy *
RA: 12h 46m 54.7s Dec: -11° 38' 09"
Mag: 13.4 S.B.: --- B-V: --- Size: 1.4'x1.1' Class: Pec
P.A.: 55 Inclination: --- R.V.: +2492 Source: RC3
This eg has a 14th mag * embedded in the outer halo on the E edge. Probably just slightly off-round in PA 90, 50" x 40" reasonable SB halo growing broadly and slightly to the centre without zones or apparent nucleus. Not hard to see at all.
x185 27' TF
NGC 4682 Galaxy *
RA: 12h 47m 15.6s Dec: -10° 03' 45"
Mag: 12.9 (P) S.B.: --- B-V: --- Size: 2.5'x1.2' Class: SAB(s)cd
P.A.: 83 Inclination: --- R.V.: +2307 Source: RC3 *
MCG -2-33-15 PGC 43345 Galaxy *
RA: 12h 49m 23.6s Dec: -10° 07' 03"
Mag: 12.1 (P) S.B.: --- B-V: --- Size: 4.0'x3.1' Class: SB(s)m
P.A.: 70 Inclination: --- R.V.: +1318 Source: RC3 *
MCG -2-33-10A (MCG -2-33-10) PGC 43236 Galaxy *
RA: 12h 48m 09.7s Dec: -10° 11' 11"
Mag: 16.1 S.B.: --- B-V: --- Size: 1.1'x0.4' Class: SB(s)m
P.A.: 134 Inclination: --- R.V.: --- Source: RC3 *
PGC 43237 Galaxy *
RA: 12h 48m 05.6s Dec: -10° 10' 36"
Mag: 15.4 S.B.: --- B-V: --- Size: 0.7'x0.6' Class:
P.A.: 5 Inclination: --- R.V.: --- Source: PGC *
-82 is a quite bright but LSB diffuse looking eg. 2.25' x 1.5' in about PA 90 with nebulous edges growing broadly and slightly to the centre without apparent core or nucleus. there is a 14th mag * not far off the NE end of the halo. E by a med-power field is MCG -2-33-15.
-15 is a large, 3' diameter round patch of diaphanous gossamer, very, very LSB, faint and grows weakly to centre with no apparent core or nucleus.
Almost between but a little S of these two is tiny MCG -2-33-10A and PGC 43237. -10A is a small 30 x 20" patch of consistent SB gossamer -- very faint in PA 135. -37 is no more than a stellar-spot of fog just to its N by less than 1'.
Pt 4 to follow ...