Zone 250, Master Map
-24°00'
Normal View
Zone Master, Normal View, 10 deg FOV
c κ2
κ1
δ
ι
α
-28°00'
f
-26°00'
Aquarius
Sculptor
d
µ
η
-34°00'
No map
g
ξ
01h 28m 01h 20m 01h 12m 01h 04m
-36°00'
θ
e
λ2
λ1
00h 48m 00h 40m 00h 32m 00h 24m
β
00h 08m 00h 00m
-38°00'
σ
-32°00'
-30°00'
ζ
23h 44m 23h 36m 23h 28m
Zone 250, Map 1
Normal Image
-25°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
NGC 24
-26°00'
Cordoba 273
h5440
-27°00'
Lalande 193
κ1
-28°00'
κ2
h1949
Kappa 1 Scl
-29°00'
Hipparcos 22
ι
ζ
Zeta Scl
Blanco 1
00h 30m
00h 25m
00h 20m
00h 15m
00h 10m
00h 05m
00h 00m
Zone 250, Map 1
Mirror Image
-25°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
NGC 24
-26°00'
Cordoba 273
-27°00'
Lalande 193
h5440
h1949
κ1 Kappa 1 Scl
h3228
-28°00'
κ2
-29°00'
Hipparcos 22
ι
ζ Zeta Scl
Blanco 1
00h 00m
00h 05m
00h 10m
00h 15m
00h 20m
00h 25m
00h 30m
Zone 250, Map 2
Normal Image
-33°00'
-32°00'
-31°00'
Blanco 1
-30°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
η
-34°00'
NGC 134
θ
00h 30m
00h 25m
00h 20m
00h 15m
00h 10m
00h 05m
00h 00m
Zone 250, Map 2
Mirror Image
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
-32°00'
-31°00'
-30°00'
Blanco 1
-33°00'
NGC 7793
η
-34°00'
NGC 134
θ
00h 00m
00h 05m
00h 10m
00h 15m
00h 20m
00h 25m
00h 30m
Zone 250, Map 3
Normal Image
-35°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
-39°00'
-38°00'
-37°00'
-36°00'
θ
NGC 55
00h 30m
00h 25m
00h 20m
00h 15m
00h 10m
00h 05m
00h 00m
Zone 250, Map 3
Mirror Image
-35°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
-39°00'
-38°00'
-37°00'
-36°00'
θ
NGC 55
00h 00m
00h 05m
00h 10m
00h 15m
00h 20m
00h 25m
00h 30m
Zone 250, Map 4
Normal Image
h3407
-25°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
h1991
NGC 253
h3442
-26°00'
h1992
h3377
-27°00'
NGC 288
h3379
-29°00'
-28°00'
NGC 150
α Alpha Scl
01h 00m
NGC 174
00h 55m
00h 50m
00h 45m
00h 40m
00h 35m
00h 30m
Zone 250, Map 4
Mirror Image
-25°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
h3407
h1991
NGC 253
h3442
-26°00'
h1992
h3377
-27°00'
NGC 288
h3379
-29°00'
-28°00'
NGC 150
α
NGC 174
00h 30m
00h 35m
00h 40m
00h 45m
00h 50m
00h 55m
Alpha Scl
01h 00m
Zone 250, Map 5
Normal Image
-37°00'
-36°00'
-35°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
-38°00'
NGC 300
NGC 264
λ2
λ1
-39°00'
ξ
01h 00m
00h 55m
00h 50m
00h 45m
00h 40m
00h 35m
00h 30m
Zone 250, Map 5
Mirror Image
-37°00'
-36°00'
-35°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
-38°00'
NGC 300
NGC 264
λ2
ξ
00h 30m
00h 35m
00h 40m
00h 45m
00h 50m
00h 55m
01h 00m
-39°00'
λ1
Zone 250
1 Reference Star, 12 Double Stars, 1 Open Cluster,
1 Globular Cluster, 6 Galaxies
A
Alpha Scl ............................................... 8
h5440 ..................................................... 3
Hipparcos 22 .......................................... 4
B
K
Blanco 1................................................. 5
Kappa 1 Scl............................................ 4
C
L
Cordoba 273 .......................................... 2
Lalande 193............................................ 2
H
N
h1949 ..................................................... 3
h1991 ..................................................... 8
h1992 ................................................... 10
h3377 ..................................................... 9
h3379 ................................................... 11
h3407 ................................................... 10
h3442 ..................................................... 9
NGC 134 ................................................ 6
NGC 150 .............................................. 13
NGC 174 .............................................. 14
NGC 253 .............................................. 12
NGC 288 .............................................. 13
NGC 300 .............................................. 15
NGC 55 .................................................. 7
-1-
Zone 250
Zone 250, Map 1
Double Stars
Easy
Cordoba 273
Rating: 4 E
SAO 192307
Position: 0000-2519
A
B
Magnitude
10.13
10.20
Separation PA
—
—
8.5 =
11 =
Year
—
1991
Spectra
G
Colors
yW
W
Notes:
1932: 8.5 @ 11. 4 measurements.
Observations:
C11 at 115x.
Lalande 193
Rating: 4 E
ADS 17150; HD 224641; SAO 192295
Position: 0000-2632
A
B
Magnitude
7.13
8.01
Separation PA
—
—
11
170
Year
—
1951
Notes:
The stars share common proper motion.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameters: A = 29.5 inches; B = 19.7 inches.
Separation: AB = 11.8 miles.
-2-
Spectra
F0 III
F0 IV
Colors
W
W
Zone 250
Distance (LY): 690
Total luminosity (Suns): 77
h1949
Rating: 4 E
HD 1451; SAO 166177
Position: 0018-2758
A
B
Magnitude
8.47
8.84
Separation PA
—
—
71.5 -! 324 -
Year
—
1991
Spectra
K2 III
K5 III
Colors
Y
Y
Notes:
1830: 90.0 @ 325. 10 measurements
The stars share common proper motion.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 49.5 inches; B 54.3 inches.
Separation: AB = 139 miles.
Distance (LY): 1,250
Total luminosity (Suns): 86
Moderate
h5440
Rating: 5 M
ADS 17177; HD 224989
Position: 0002-2707
A
B
Magnitude
7.97
8.90
Separation PA
—
—
3.1 288 +
Notes:
1834: 3.6 @ 285. 24 measurements.
Observations:
C8 at 206x.
-3-
Year
—
1991
Spectra
F7 V
Colors
W
W
Zone 250
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 10.5 inches.
Separation: AB = 1.75 miles.
Distance (LY): 362
Total luminosity (Suns): 10
Hipparcos 22
Position: 0010-2829
A
B
Magnitude
10.07
11.57
Rating: 5 M
Separation PA
—
—
8.7 226 -
Year
—
1991
Spectra
Gp...
Colors
yW
W
Notes:
1913: 10.1 @ 230. 5 measurements.
Observations:
C11 at 115x.
Difficult
Kappa 1 Scl
10 Scl; Bur 391; ADS 111; HD 493; SAO 166083
Rating: 2 D
Position: 0009-2800
A
B
C
Magnitude
5.42
6.30
18.60
Separation
—
1.4 +
70.0
PA
—
260 +!
243
Notes:
AB 1875: 0.7 @ 110. 59 measurements.
AC 1 measurement. Common proper motion.
The primary rotates at 131 kps.
Observations:
C8 at 280x.
-4-
Year
—
1999
1954
Spectra
F3 V
F2 V
Colors
W
W
No
Zone 250
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 4.80 inches; B = 5.10 inches.
Separation: AB = 2,584 feet.
Distance (LY): 224
Total luminosity (Suns): 39.5
Deep Sky Objects
Easy
Blanco 1
Other Names: Zeta Sculptor Cluster
Rating: 5 E
Position: 0004-2956
Type: Oc
Dimensions: 90'
Class: III 2p
Cluster population: 30
Magnitude: 4.5
Notes:
It is 50 million years old. The brightest star is 5.0m.
It was only discovered in 1949. The discoverer, V. M. Blanco, found it by doing a
statistical count of A0 stars in the sky using data built by Kapteyn. He found that the
density of A0 stars in this part of the sky was five times the average, suggesting a cluster,
which he eventually proved to be the case.
Observations:
C8 at 104x. Very large, it overflows the 24 min field of my eyepiece. It is sparse and
hardly noticeable as an open cluster.
Model (where the Sun is a baseball):
Its diameter would be 6,740 miles with the stars 1,085 miles apart.
Distance (LY): 800
Luminosity (suns): 800
-5-
Zone 250
Zone 250, Map 2
Deep Sky Objects
Difficult
NGC 134
Other Names: PGC 1851
Rating: 4 D
Position: 0030-3315
Type: Gal
Surface brightness: 13.3
Class: SAB(s)bc
Dimensions: 5' x 1'
Magnitude: 11.0
PA: 48
Observations:
C8 at 104x. An edge-on spiral that Steve Coe describes as bright, large, and with a
bright nucleus ("like ka mini-Sombrero Galaxy"). Larger scopes (well beyond an 8")
show a dark lane.
Distance (LY): 67,000,000
Radial velocity (km/sec): +1,663
Total luminosity (Suns): 14,000,000,000
-6-
Zone 250
Zone 250, Map 3
Deep Sky Objects
Easy
NGC 55
Other Names: Dunlop 507, PGC 1014
Rating: 3 E
Position: 0015-3911
Type: Gal
Surface brightness: 13.6
Class: SB(s)m:
Dimensions: 25' x 4'
Magnitude: 7.8
PA: 107
Notes:
It was discovered by James Dunlop on August 4, 1826.
This galaxy is a member of the Sculptor Galaxy Group.
Observations:
C8 at 83x. Has a WNW-ESE axis. The W part looks brighter. There may be some
mottling at medium power.
A 10m star lies off the ESE end.
Try using a high-contrast filter on this galaxy to see if you can pull up any of the
bright H-II regions. I find that an Orion Skyglow Ultrablock produced a few nice
surprises this way.
Distance (LY): 4,000,000
Radial velocity (km/sec): +177
Total luminosity (Suns): 1,000,000,000
-7-
Zone 250
Zone 250, Map 4
Reference Star
Alpha Scl (1 Scl; HD 5737; SAO 166716)
Position: 0059-2921
Mag : 4.30
Assumed distance: 670 light years
Spectrum : B7 IIIp
Color : W
Assumed luminosity (suns): 680
Notes:
This star has several interesting traits. For one, it has weak lines of helium in its
spectrum, which implies an early age. It also has a circumstellar cloud surrounding it and
is a spectroscopic binary. It may also be variable, since it seems to still be adjusting to
life on the Main Sequence. Its companion is suspected of being a black hole. This poses
an interesting scenario: since the primary and secondary formed together, and the
secondary has already exhausted its fuel supplies and gone supernova, it must have been
very massive since its companion (now the primary) shows little helium in its spectrum.
This implies the secondary had to burn its fuel at an amazing rate! What might it have
been like on a hpyothetical planet orbiting the primary when the now-invisible
companion ripped itself apart in a fiery death?
Double Stars
Easy
h1991
Rating: 2 E
HD 3605; SAO 166443
Position: 0039-2507
A
B
Magnitude
6.43
9.60
Separation PA
—
—
47.1 +
95 +
Year
—
1970
Spectra
K4 III
Colors
O!
dB!
Notes:
1830: 40.0 @ 93. 9 measurements.
Hipparcos/Tycho mission data show different distances for these stars (730 and 79
light years); they may be optical.
-8-
Zone 250
Observations:
C8 at 104x.
h3377
Rating: 3 E
ADS 466; HD 3045; SAO 166362
Position: 0034-2606
A
B
Magnitude
7.29
9.85
Separation PA
—
—
21.0 +
61 +
Year
—
1997
Spectra
K3/4 III
Colors
O!
W
Notes:
1835: 15.0 @ 54. 23 measurements.
May be optical because Hipparcos gives different distances (1,420 and 246 light
years).
Observations:
C11 at 115x.
h3442
Rating: 4 E
ADS 456; HD 2947; SAO 166344
Position: 0033-2522
A
B
Magnitude
6.72
11.42
Separation PA
—
—
20.7 -! 193 -
Year
—
1967
Spectra
K0 III
Colors
O
?
Notes:
1836: 30.0 @ 208. 7 measurements.
Hipparcos/Tycho mission data show different distances for these stars (392 and 139
light years); they may be optical.
Observations:
C8 at 104x.
-9-
Zone 250
h1992
Rating: 4 E
HD 3622; SAO 166446
Position: 0039-2536
A
B
Magnitude
7.77
9.13
Separation PA
—
—
45.9 +
248 +
Year
—
1991
Spectra
A3 V
K
Colors
W
Y
Notes:
1830: 40.0 @ 247. 9 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.10 inches.
Separation: AB = 25.1 miles.
Distance (LY): 350
Total luminosity (Suns): 10
h3407
Rating: 4 E
ADS 742; HD 5250; SAO 166661
Position: 0054-2502
A
B
Magnitude
8.72
8.86
Separation PA
—
—
12.9 127 +
Year
—
1991
Notes:
1835: 15.0 @ 126. 20 measurements.
The stars share common proper motion.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.75 inches; B = 6.32 inches.
Separation: AB = 6.60 miles.
- 10 -
Spectra
F0 V
F0 V
Colors
W
W
Zone 250
Distance (LY): 328
Total luminosity (Suns): 4
Difficult
h3379
Rating: 5 D
ADS 514; HD 3389
Position: 0037-2725
A
B
Magnitude
7.94
11.15
Separation PA
—
—
14.5 232 +
Year
—
1991
Notes:
1835: 8.0 @ 229. 9 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 10.6 inches.
Separation: AB = 8.17 miles.
Distance (LY): 361
Total luminosity (Suns): 7.15
- 11 -
Spectra
F3 IV/V
Colors
W
?
Zone 250
Deep Sky Objects
Easy
NGC 253
Rating: 1 E
Other Names: H V 1
Astronomical League Program: Caldwell Club, Herschel 400 Club, Binocular Deep Sky
Club
Position: 0048-2517
Type: Gal
Surface brightness: 13.2
Class: Sc
Dimensions: 22' x 6'
Magnitude: 7.0
PA: 52
Notes:
NGC 253 is the brightest member of the Sculptor group of galaxies, which is grouped
around the South galactic pole (therefore, also sometimes named "South Polar Group").
The Sculptor group is perhaps the nearest to our Local Group of galaxies. NGC 253 is
also one of the brightest galaxies beyond the Local Group. The RASC Observer's
Handbook gives the common name Silver Coin Galaxy for NGC 253; it is also referred to
as the Sculptor Galaxy.
NGC 253 was one of the major discoveries of Caroline Herschel, the sister of William
Herschel. She discovered this object on September 23, 1783 with "an excellent small
Newtonian Sweeper" of 27 inches focal length and a power of 30 (William Herschel's
description). William Herschel included it in his catalog as H V 1.
[Source: http://www.seds.org/messier/xtra/ngc/n0253.html]
Observations:
C8 at 83x. Very bright and large, and grainy at medium to high powers (where some
mottling shows up). Its axis runs NE-SW and it has a bright, starlike nucleus. A most
impressive view! It looks a little brighter in the E end. Two 8m stars lie off the S end.
Model (where the Sun is a baseball):
It would be 16 million miles by 4 million miles in size.
Distance (LY): 11,000,000
Radial velocity (km/sec): -81
Luminosity (suns): 15,100,000,000
- 12 -
Zone 250
Moderate
NGC 150
Other Names: PGC 2052
Rating: 4 M
Position: 0034-2748
Type: Gal
Surface brightness: 13.4
Class: SB(rs)bc
Dimensions: 3.9' x 1.9'
Magnitude: 11.4
PA: 118
Notes:
SN 1990K (type II) was discovered in this galaxy on May 25, 1990.
Observations:
C11 at 98x. Large, even, and without a nucleus. Framed by a triangle of 11m, 12m
and 12m stars.
Distance (LY): 70,000,000
Total luminosity (Suns): 10,600,000,000
NGC 288
Other Names: H VI 20
Astronomical League Program: Herschel 400 Club
Rating: 5 M
Position: 0053-2635
Type: Gc
Dimensions: 10'
Class: 10
Magnitude: 7.2
Notes:
The brightest stars are 12.6m and the horizontal branch is 15.3m.
The S galactic pole lies less than 1o SW.
The Sculptor Group of galaxies is centered 4o W of here.
This globular cluster was discovered by William Herschel on October 27, 1785 and
cataloged by him as H VI 20.
NGC 288 attracted attention of astronomers in the late 1980s when it was compared
with the otherwise similar globular cluster NGC 362 on about the same right ascension
(but much more southerly declination), and found that NGC 288 must be about 3 billion
years older. This result was found because of differences in the color-magnitude
diagrams: The so-called Horizontal Branch of NGC 288 is bluer, and the turnoff point of
the main sequence (hottest/bluest/most massive main sequence stars) is redder (and
fainter).
- 13 -
Zone 250
Binocular observers can view NGC 288 together with the bright galaxy NGC 253 in
one field; NGC 288 appears as a round nebulous object. Telescopes of 4 or 6 inches
aperture resolve this cluster, provided the observer is located sufficiently south. The
rather poor concentration of this cluster is indicated by its classification in class X.
[Source: http://www.seds.org/~spider/spider/MWGC/n0288.html]
Observations:
C8 at 83x. Faint and unresolved, it is beautiful at medium powers.
Model (where the Sun is a baseball):
Its diameter would be 40,260 miles.
Distance (LY): 43,000
Luminosity (suns): 190,000
Difficult
NGC 174
Other Names: PGC 2206
Rating: 5 D
Position: 0037-2929
Type: Gal
Surface brightness: 12.4
Class: SB(rs)0/a
Dimensions: 1.4' x 0.6'
Magnitude: 12.8
PA: 152
Observations:
C11 at 98x. Stellar core with a 5" halo; very faint. A nice chain of four stars runs NS just W of it.
Radial velocity (km/sec): +3,469
- 14 -
Zone 250
Zone 250, Map 1
Deep Sky Objects
Easy
NGC 300
Other Names: PGC 3238
Astronomical League Program: Caldwell Club
Rating: 2 E
Position: 0055-3741
Type: Gal
Dimensions: 20' x 13'
Class: SA(s)d
Magnitude: 8.1
Observations:
Steve Coe's C11 at 138x in Sentinel, Arizona. Large and mottled ellipse with a
slowly brighter center. No evidence of spiral structure (not surprising), but very heavy
stippling evident.
Distance (LY): 4,000,000
Total luminosity (Suns): 800,000,000
- 15 -
Zone 250
Zone 250 Mini-Catalog
Double Stars
Designation
Position
Rating
Map
h1991
0039-2507
2E
4
h3377
0034-2606
3E
4
Cordoba 273
0000-2519
4E
1
Lalande 193
0000-2632
4E
1
h1949
0018-2758
4E
1
h3442
0033-2522
4E
4
h1992
0039-2536
4E
4
h3407
0054-2502
4E
4
h5440
0002-2707
5M
1
Hipparcos 22
0010-2829
5M
1
Kappa 1 Scl
0009-2800
2D
1
h3379
0037-2725
5D
4
Component
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
C
A
B
Mag
6.43
9.60
7.29
9.85
10.13
10.20
7.13
8.01
8.47
8.84
6.72
11.42
7.77
9.13
8.72
8.86
7.97
8.90
10.07
11.57
5.42
6.30
18.60
7.94
11.15
Separation
—
47.1 +
—
21.0 +
—
8.5 =
—
11
—
71.5 -!
—
20.7 -!
—
45.9 +
—
12.9 —
3.1 —
8.7 —
1.4 +
70.0
—
14.5 -
PA
—
95 +
—
61 +
—
11 =
—
170
—
324 —
193 —
248 +
—
127 +
—
288 +
—
226 —
260 +!
70.0
—
232 +
Deep Space Objects
Object
NGC 253
NGC 300
NGC 55
Blanco 1
NGC 150
NGC 288
NGC 134
NGC 174
Position
0048-2517
0055-3741
0015-3911
0004-2956
0034-2748
0053-2635
0030-3315
0037-2929
Rating
1E
2E
3E
5E
4M
5M
4D
5D
Map
4
5
3
1
4
4
2
4
Type
Gal (Sc)
Gal (SA(s)d)
Gal (SBm)
Oc (III 2p)
Gal (SB(rs)bc)
Gc (10)
Gal (SAB(s)bc)
Gal (SB(rs)0/a)
- 16 -
Specifications
Surface
Mag
Br
7.0
13.2
8.1
7.8
13.6
4.5
11.4
13.4
7.2
11.0
13.3
12.8
12.4
Population
30