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Old 30-12-2008, 06:01 PM
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ngcles
The Observologist

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Join Date: Dec 2006
Location: Billimari, NSW Central West
Posts: 1,664
Part 3/3 Observing report 28th & 29th December 2009 -- NGCLes

Pt 3 ...

x185 27' TF

NGC 1684 Galaxy *
RA: 04h 52m 31.1s Dec: -03° 06' 23"
Mag: 12.5 S.B.: --- B-V: --- Size: 2.4'x1.6' Class: E+ pec:
P.A.: 86 Inclination: --- R.V.: --- Source: RC3 *

NGC 1682 Galaxy *
RA: 04h 52m 19.8s Dec: -03° 06' 19"
Mag: 12.6 S.B.: --- B-V: --- Size: 0.8'x0.8' Class: E/S0
P.A.: --- Inclination: --- R.V.: --- Source: PGC *

NGC 1683 Galaxy *
RA: 04h 52m 17.5s Dec: -03° 01' 29"
Mag: 15.6 S.B.: --- B-V: --- Size: 1.0'x0.4' Class: Sa
P.A.: 157 Inclination: --- R.V.: --- Source: PGC *

NGC 1685 Galaxy *
RA: 04h 52m 34.4s Dec: -02° 57' 01"
Mag: 14.5 S.B.: --- B-V: --- Size: 1.5'x0.8' Class: SB(r)0/a
P.A.: 138 Inclination: --- R.V.: +4527 Source: RC3 *

MCG -1-13-33 PGC 16256 Galaxy *
RA: 04h 53m 17.5s Dec: -03° 00' 35"
Mag: 15.2 S.B.: --- B-V: --- Size: 1.3'x0.8' Class: SB(s)cd
P.A.: 132 Inclination: --- R.V.: --- Source: RC3 *

MCG -1-13-22 PGC 16168 Galaxy *
RA: 04h 51m 26.6s Dec: -03° 07' 20"
Mag: 15.1 S.B.: --- B-V: --- Size: 1.6'x0.4' Class: Sb: sp
P.A.: 104 Inclination: --- R.V.: --- Source: RC3 *

MCG -1-13-17 PGC 16142 Galaxy *
RA: 04h 50m 38.7s Dec: -03° 08' 30"
Mag: 15.6 S.B.: --- B-V: --- Size: 1.0'x0.4' Class: SA(s)a pec?
P.A.: 41 Inclination: --- R.V.: --- Source: RC3

This group contains 7 eg's of whcih NGC 1684 is by far the brightest, -82 is 5' to the W and the others are arraanged arond them. NGC 1684 is 4' N f a 6th mag * and is a small but good SB eg and a little elong in PA 90, seems to grow broadly and slightly to centre where there is a weakly brighter round core zone but no real nucleus. -82 is smaller and slightly fainter and round and has a similar brightening profile to the centre.

10' N of -84 is -85 which is a very small faint eg, seeming somewhat lower in SB than -84 & -82 and is to the NW of a very faint *. 15" dia spot of very LSB consistent SB mist. Almost between -85 and -82 is an almost stellar spot of gossamer -83 -- no structure visible, very tiny.

-10' NE of -84 is MCG -1-13-33 that looks similar but a bit fainter than -85, about 15" diameter patch of gossamer. 15' W of -84 is MCG -1-13-22 which is just N of an 8th mag * that is quite distracting. It is a tiny elong streak of haze growing out of the side of a mag 14* in about PA 120, 20" x 5" and of consistent, very low SB. 10' further W is MCG -1-13-17 that is of similar appearance but in PA 30 -- very tiny too.



x185 27' TF

NGC 1690 Galaxy *
RA: 04h 54m 16.7s Dec: +01° 40' 03"
Mag: 14.8 (P) S.B.: --- B-V: --- Size: 0.9'x0.3' Class: SB(s)b
P.A.: 116 Inclination: 6 R.V.: +2100 Source: RC3 *

MCG +0-13-27 PGC 16290 Galaxy *
RA: 04h 54m 19.3s Dec: +01° 38' 25"
Mag: 14.9 (P) S.B.: --- B-V: --- Size: 0.9' Class: E
P.A.: --- Inclination: --- R.V.: +8762 Source PGC

MCG +0-13-24 PGC 16276 Galaxy *
RA: 04h 53m 54.2s Dec: +01° 40' 57"
Mag: 15.8 S.B.: --- B-V: --- Size: 0.6'x0.5' Class: S0
P.A.: 26 Inclination: --- R.V.: --- Source: PGC *

This is a trio of very small and faint eg's about 6' NW of a 6th mag. The three are very. very tiny almost stellar spots of haze -- took a bit of time to track down. MGC +0-13-27 is a bit brighter than NGC 1690, but all three are about 10-15" diameter, round growing weakly to centre. Took concentration to see them -- very easily passed over.



x185 27' TF

NGC 1691 Mkn 1088 Galaxy *
RA: 04h 54m 38.4s Dec: +03° 16' 06"
Mag: 13.0 (P) S.B.: --- B-V: --- Size: 2.3'x1.8' Class: (R)SB(s)0/a:
P.A.: 34 Inclination: 1 R.V.: +4590 Source: RC3

This is a very tiny eg with quite a few faint stars in the field. The DSS shows a much larger though V/LSB halo -- a somewhat peculiar ring-form barred spiral only a very tiny 15" spot growing mod and evenly to centre with a sub-stellar nucleus is visible.



x185 27' TF

NGC 1713 Galaxy *
RA: 04h 58m 54.5s Dec: -00° 29' 28"
Mag: 13.9 (B) S.B.: 12.6 B-V: +1.17 Size: 1.7'x1.3' Class: E+:
P.A.: 41 Inclination: --- R.V.: +4514 Source: RC3 *

NGC 1709 Galaxy *
RA: 04h 58m 44.1s Dec: -00° 28' 42"
Mag: 15.2 (P) S.B.: --- B-V: --- Size: 1.0'x0.7' Class: SB0^:
P.A.: 50 Inclination: --- R.V.: +4731 Source: RC3 *

MCG +0-13-53 PGC 16448 Galaxy *
RA: 04h 58m 33.3s Dec: -00° 33' 10"
Mag: 15.3 (P) S.B.: --- B-V: --- Size: 0.5'x0.5' Class: SB(rs)0-:
P.A.: --- Inclination: --- R.V.: +4807 Source: RC3 *

MCG +0-13-52 PGC 16447 Galaxy *
RA: 04h 58m 31.3s Dec: -00° 34' 27"
Mag: 15.7 S.B.: --- B-V: --- Size: 1.0'x0.7' Class:
P.A.: 175 Inclination: --- R.V.: +4197 Source: PGC *

NGC 1719 PGC 16501 Galaxy *
RA: 04h 59m 34.6s Dec: -00° 15' 38"
Mag: 14.5 (P) S.B.: --- B-V: --- Size: 1.5'x0.5' Class: Sa: sp
P.A.: 104 Inclination: 6 R.V.: +4165 Source: RC3 *

There are 4 eg's in the one field with NGC 1713 being the dominant one and NGC 1719 in an adjacent field NE. -13 is the brightest, but still a pretty small, non-descript galaxy. -09 is only 3' W. -13 is about 50" diameter, round growing evenly and slightly to centre and at centre is an occasional substellar nucleus. -19 is adjacent to a mag 13 * and is somewhat smaller and fainter, about 15" diameter with an even slight concentration to centre with a hint of a sub-stellar spot in the centre.

The two MCG eg's are found side-by-side about 5' SW and are pretty similar in appearance to
-09 save being a little fainter. -53 has a 14th mag * on its edge that is brighter than the eg.

NGC 1719 is in an adjacent field to the NE as a very tiny spot of haze about 15" of very. very LSB with a 16th mag star on the S edge.



x185 27' TF

NGC 1729 Galaxy *
RA: 05h 00m 15.7s Dec: -03° 21' 10"
Mag: 13.1 S.B.: --- B-V: --- Size: 1.6'x1.3' Class: SA(s)c
P.A.: 24 Inclination: --- R.V.: +3644 Source: RC3 *

NGC 1740 Galaxy *
RA: 05h 01m 54.8s Dec: -03° 17' 46"
Mag: 13.4 S.B.: --- B-V: --- Size: 1.5'x1.1' Class: S0-:
P.A.: 59 Inclination: --- R.V.: --- Source: RC3 *

NGC 1753 Galaxy *
RA: 05h 02m 32.2s Dec: -03° 20' 40"
Mag: 15.5 S.B.: --- B-V: --- Size: 1.3'x0.5' Class: (R')SBa pec?
P.A.: 159 Inclination: --- R.V.: --- Source: RC3 *

-29 makes a tri with a mag 11 & 13 *s whciha re to its N and E, a fair size, nearly 1' diameter diffuse patch that looks a bit more like a small nebula than an eg. Round, weak azonal central brightening but seems slightly grainy.

-40 is about 20' E of -29 and is a small oval patch of mist, about 30" x 20" in PA 30 with a slight azonal central brightening and a 13th mag * at the SW end.

-53 is similar to -40 but perhaps a fraction smaller and fainter but otherwise similar -- except in PA 0.



x185 27' TF

NGC 1762 Galaxy *
RA: 05h 03m 37.2s Dec: +01° 34' 23"
Mag: 13.4 (B) S.B.: 12.7 B-V: +0.75 Size: 1.7'x1.2' Class: SA(rs)c:
P.A.: 175 Inclination: 3 R.V.: +4633 Source: RC3 *

This eg is just a little off-round in PA 0 and seems to have a 13th mag * superimposed at the SE corner. It almost makes a RA tri with two mag 12 * 4 & 5' away to the S and SE. Fairly soft diffuse looing halo, growing broadly and slightly to centre but without nucleus. 1.25' x 50" in PA0.



x185 27' TF

IC 412 Multi-Galaxy Sys *
RA: 05h 21m 56.3s Dec: +03° 29' 15"
Mag: 14.6 (P) S.B.: --- B-V: --- Size: 1.5'x0.7' Class: S?
P.A.: 171 Inclination: --- R.V.: +4311 Source: RC3

IC 413 Multi-Galaxy Sys *
RA: 05h 21m 58.7s Dec: +03° 28' 56"
Mag: 14.7 (P) S.B.: --- B-V: --- Size: 0.9'x0.7' Class: S?
P.A.: 161 Inclination: --- R.V.: +4333 Source: RC3 *

These are so small and faint they would be essentially invisible unless you knew exactly where to look. The two egs and a mag 12.5 * form a very tiny, less than 1' a side triangle with the star at the N point of the tri. Both are similarly sized, 15" diameter spots of haze that grow to centre where there is a substellar spot in the centre of each. Each is almost identical to the other.



x185 27' TF

NGC 1819 Mkn 1194 Galaxy *
RA: 05h 11m 46.2s Dec: +05° 12' 02"
Mag: 13.4 (P) S.B.: --- B-V: --- Size: 1.6'x1.1' Class: SB0
P.A.: 120 Inclination: --- R.V.: +4826 Source: RC3 *

This is a very tiny eg, about 30" diameter that has a considerably brighter sub-stellar core/nucleus about 15' S of a mag 8 *. Two mag 15 *s point at it very close-by to the SW, the closes is nearly on the halo.



x185 27' TF

NGC 2110 Galaxy *
RA: 05h 52m 11.5s Dec: -07° 27' 24"
Mag: 13.2 S.B.: --- B-V: --- Size: 1.7'x1.2' Class: SAB0-
P.A.: 166 Inclination: --- R.V.: +2284 Source: RC3 *

This eg is found about 14' to the NE of a mag 5 *. Quite reasonable SB though small, round, 30" diameter growing broadly and mod to the centre where there is a faint substellar spot in the centre seeming occasionally stellar.


Best,

Les D
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