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Old 14-01-2008, 09:41 PM
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ngcles
The Observologist

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Observation Report 11 January 2007

Hi All,

Just thought I'd post my recorded observations for last Friday night at my southern highlands site. There was a lot of other stuff we looked at including all the summer favourites but these are the recorded observations I made in cleaning out the last galaxies on my list for Reticulum.

Telescope is a 46cm (18") f/4.9 Dobsonian mounted newtonian. Eyepieces used for all these observations were 9mm TI Nagler x247 and 12mm T II x185. The ZLM was about 6.1-6.2 and I'd rate the seeing at 5/10.

The first observation is the "Pyxis Globular", the rest are galaxies.

x185 27' TF
x247 20' TF

Pyxis Cluster Globular Cluster *
RA: 09h 07m 57.8s Dec: -37 13' 17"
Mag: 12.9 Mag V(tip): 15.2 Mag V(HB): 18.7
B-V (tip): --- Size: 4.0' Class: R.V.: --- Source: Archinal *

This is not a certain observation, but I think intermittently I can see it . Appears just to the E of the mid-point of mag 7 & mag 8 *s that are aligned N-S about 13' apart. There are a row of 3 similarly bright mag 12 *s that are not quite evenly spaced. It is near the mid-most of those stars. Intermittent detection possible as a 2.5' diameter round patch of gossamer with no central brightening with about 3 or 4 15th & 16th magnitude *s sewn over. Looks nothing like a GC -- more like a field irregularity. Very populous field.



x185 27' TF

IC 1960 Galaxy *
RA: 03h 32m 33.5s Dec: -57 12' 27"
Mag: 15.1 (P) S.B.: --- B-V: ---
Size: 1.1'x0.2' Class: Sab? sp P.A.: 114
Inclination: --- R.V.: --- Source: RC3

This is a very, very faint and very small eg, took a while to pick up. Perhaps just 15" diameter elong indefinitely in PA 90 with a mag 15 * just to the N by 1' of the eg. No apparent central brightening. Very, very faint.



x185 27' TF

IC 1980 Galaxy *
RA: 03h 36m 59.0s Dec: -57 58' 24"
Mag: 14.9 (P)S.B.: ---B-V: ---Size: 1.1'x0.4'
Class: Sb? sp pec P.A.: 19 Inclination: ---
R.V.: ---Source: RC3 *

This took a long time to finally see, it is a very faint eg. It is superimposed (almost) on a 12th magnitude * seeming to grow out of that star to the N. Very tiny and faint, 15" dia as a very LSB spot with no central brightening. Hardly worth the effort!



x185 27' TF
x247 20' TF

IC 1987 Multi-Galaxy Sys *
RA: 03h 40m 11.7s Dec: -55 03' 30"
Mag: 15.9 S.B.: --- B-V: ---
Size: 0.5'x0.4' Class: E P.A.: 131
Inclination: --- R.V.: +13920 Source: PGC *

Note the R.V!! This is also a very to extremely faint and small eg that is thankfully a little larger and brighter and larger than IC 1960 and IC 1980 (previous). Found due W by 6' from a mag 9 * and presents as a small very LSB spot of haze about 30" dia with a slight broad central brightening and no evidence of zones or nucleus.



x185 27' TF
x247 20' TF

NGC 1463 Galaxy *
RA: 03h 46m 15.6s Dec: -59 48' 36"
Mag: 14.3 (B) S.B.: 12.2 B-V: +0.79
Size: 1.3'x1.1' Class: (R)SA(rs)a? P.A.: 45
Inclination: --- R.V.: --- Source: RC3 *

Not too bad, found pretty much due N from a 9th mag * by about 13' and almost between a couple of mag 12 *s that are aligned E-W and sep by about 4'. It is pretty small, 40-50" diameter, round with a broad, slight central brightening and seems to have a very small weakly brighter zone in the centre but no real nucleus. Very diffuse edges. Maybe 40" diameter.



x185 27' TF
x247 20' TF

IC 2010 Galaxy *
RA: 03h 51m 58.0s Dec: -59 55' 47"
Mag: 14.4 (B) S.B.: 12.9 B-V: +0.67
Size: 1.1'x0.4' Class: Sa? P.A.: 71
Inclination: --- R.V.: --- Source: RC3 *

Faint but not quite as bad as some tonight! Presents as a very, very small faint fat lens shaped spindle eg maybe 40" x 15" in PA 45 with a slight azonal brightening to the centre. There are a couple of = br mag 12.5 *s to its N with which the eg makes a 3' long I tri.



x185 27' TF
x247 20' TF

IC 2014 Galaxy *
RA: 03h 55m 21.7s Dec: -56 44' 46"
Mag: 15.5 (P) S.B.: --- B-V: ---
Size: 1.1'x0.5' Class: SB(s)c: P.A.: 17
Inclination: --- R.V.: +10319 Source: RC3 *

Again, note the R.V. This is an exceptionally faint eg that is found to the W by about 3' from a very faint mags 12 & 13 pair. It is very very small, maybe 20" diameter patch of gossamer, round and only occasionally visible. No structure discernible. Very nasty!!



x185 27' TF
x247 20' TF

NGC 1503 Galaxy *
RA: 03h 56m 33.3s Dec: -66 02' 27"
Mag: 14.4 (P) S.B.: --- B-V: ---
Size: 0.8'x0.6' Class: SB(rs)0+? P.A.: 140
Inclination: --- R.V.: --- Source: RC3 *

This is pretty much immediately visible, certainly faint but not too hard to see. Makes a RA Tri with a couple of mag 12 & 13 *s 3' and 5' distant to the N and NE respectively. Pretty small, 20-30" diameter, maybe slightly elong in PA 90 and grows slightly and broadly to the centre azonally without apparent core or nucleus.

Pt 2 to follow


Best,

Les D
Contributing Editor
AS&T
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  #2  
Old 14-01-2008, 09:42 PM
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ngcles
The Observologist

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Location: Billimari, NSW Central West
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Pt 2

x185 27' TF
x247 20' TF

IC 2017 Galaxy *
RA: 03h 56m 39.6s Dec: -59 23' 42"
Mag: 14.9 (P) S.B.: --- B-V: ---
Size: 1.2'x0.6' Class: SA0^: pec P.A.: 20
Inclination: --- R.V.: --- Source: RC3 *

This is another very tiny and faint eg whcih is to the S of an E facing "V" shaped asterism of mag 12.5 to 13.5 *s. Very very tiny, 20" x 10" in PA 90 can only just be held with A.V and grows weakly to the centre without nucleus.



x185 27' TF
x247 20' TF

IC 2024 Galaxy *
RA: 04h 00m 03.5s Dec: -53 22' 27"
Mag: 15.5 (P) S.B.: --- B-V: ---
Size: 1.3'x0.3' Class: SB(s)cd? sp P.A.: 29
Inclination: --- R.V.: --- Source: RC3 *

Tis is an exceptionally faint eg that is only occasionally visible with A.V. Small and very elong, maybe 40" x 5" in PA 30 as a streak of tenuous gossamer with no central brightening. Very close to threshold.



x185 27' TF
x247 20' TF

IC 2025 Galaxy *
RA: 04h 00m 22.9s Dec: -53 03' 56"
Mag: 16.2 (B) S.B.: --- B-V: +0.78
Size: 1.0'x0.1' Class: Sb: sp P.A.: 120
Inclination: --- R.V.: +12998 Source: RC3 *

Note the R.V!! This is an exceptionally faint eg that is only barely visible occasionaly at threshold as a tiny streak of gossamer 30" x 5" with no structure visible. It is found to the W of the last star in a string that goes single, double, single, single mags 10-12 from SE to NW.



x185 27' TF
x247 20' TF

NGC 1526 Galaxy *
RA: 04h 05m 12.1s Dec: -65 50' 26"
Mag: 14.6 (P) S.B.: --- B-V: ---
Size: 0.8'x0.5' Class: Sbc P.A.: 36
Inclination: --- R.V.: --- Source: RC3 *

This eg is quite close to a small RA Tri of a 12 and a couple of mag 13 *s where the brightest star is at the RA. It is fairly small, round, pretty faint though it can be easily held with A.V 40" - odd with a slight broad concentration to centre.



x185 27' TF
x247 20' TF

IC 2034 Galaxy *
RA: 04h 06m 37.0s Dec: -57 57' 44"
Mag: 15.8 (P) S.B.: --- B-V: ---
Size: 1.2'x0.1' Class: Sc: sp P.A.: 122
Inclination: --- R.V.: --- Source: RC3 *

This is a barely visible object at threshold. Only occasionally visible as a tiny, tiny streak of gossamer may be 20" long in PA 100 with no structure visible. Only a couple of arc-minutes to the W of a mag 11 star.



x185 27' TF
x247 20' TF

NGC 1529 Galaxy *
RA: 04h 07m 19.9s Dec: -62 54' 01"
Mag: 14.4 (P) S.B.: --- B-V: ---
Size: 1.2'x0.2' Class: S0^: sp P.A.: 164
Inclination: --- R.V.: --- Source: RC3 *

NGC 1534 Galaxy *
RA: 04h 08m 45.8s Dec: -62 47' 47"
Mag: 13.7 (P) S.B.: --- B-V: --- Size: 2.2'x2.0'
Class: SA(rs)0/a: sp P.A.: 141 Inclination: --- R.V.: +5333

These two galaxies are in adjacent fields -- theya re only 12' apart. -29 is foudn to the SW of a mag 9.5 * by about 12'. A very small reasonable SB lenticular sliver in PA 0 with no stars associated. Quite faint but not too bad. Seems to have a very small and faint substellar nucleus. Overall seems about 20" diameter and elong slightly in PA 0.

This eg forms a RA tri with the * and NGC 1527. Probably the brightest seen tonight in Reticulum. 50" dia and slightly elong in PA 90 with a vaguely brighter broad streak through it in PA 90 and there is a mag 13 * just on the S flank of the halo. Overall the eg is oval in shape with a broad streak running through it but no real core or nucleus.



x185 27' TF
x247 20' TF

IC 2037 Galaxy *
RA: 04h 08m 19.2s Dec: -58 45' 06"
Mag: 14.7 (P) S.B.: --- B-V: ---
Size: 1.7'x0.2' Class: Sb sp P.A.: 89
Inclination: --- R.V.: --- Source: RC3 *

This is a very faint and very elong eg in a pretty non-descript field. Appears in the centre of a very very long I tri -- just W of the Eastmost star at the apex. Very very faint and tiny streak of gossamer, 40" x 5" in PA 90 with a weak central brightening and no visible core.



x185 27' TF
x247 20' TF

IC 2049 Multi-Galaxy Sys *
RA: 04h 12m 04.4s Dec: -58 33' 26"
Mag: 14.5 (P) S.B.: 13.6 B-V: ---
Size: 1.0'x0.9' Class: SAB(s)d? P.A.: 3
Inclination: --- R.V.: +1086 Source: RC3 *

This is a very, very tiny eg in a non-descript field that is to the S of a small flat I tri of 2 mag 11 and 1 mag 12 * which is at the wide apex. A very very tiny and faint eg, only 20" diameter with a broad slight central brightening, no zones and no apparent nucleus.



x185 27' TF
x247 20' TF

IC 2060 Galaxy *
RA: 04h 17m 53.2s Dec: -56 36' 58"
Mag: 14.9 (B) S.B.: 14.9 B-V: +0.94
Size: 1.0'x0.6' Class: S0-: pec P.A.: 157
Inclination: --- R.V.: +6686 Source: RC3*


This is another field that is pretty ordinary and a very faint eg. It is 5-6' away distinctive pair of pairs of mag 13 stars to the E. Very small and faint, Mod LSB round, 30-40" diameter appears to have a faint, weakly brighter spot in the centre but no real nucleus.


Best,

Les D
Contributing Editor
AS&T
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  #3  
Old 15-01-2008, 10:54 AM
Rob_K
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Location: Bright, Vic, Australia
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Really enjoy reading your reports Les - methodical approach to planning, viewing & recording, and excellent eyepiece descriptions! Some VERY faint ones there, congratulations!

Cheers -
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