[Prev][Next][Index][Thread][Search][Objects]
(IAAC) Obj: Abell 426 (galaxy cluster) Instr: 17.5", 13.1", 8"
[Sorry for the long delay forwarding these, Steve. Thanks for giving us
some great observations, and keep them coming! I'll be following up with
some Coma and UMa I cluster observations soon, too. Clear skies! -Lew]
A little while back, I promised you some more surveys of Abell clusters -
here is what I have on Abell 426 = Perseus galaxy cluster, a rich hunting
ground for moderate to large sized scopes. There are a total of 58
galaxies included; all objects were surveyed with my 17.5", but there are
some earlier observations with a 13.1" and 8" scopes. These were all made
with mag 6.5 or better limiting mag skies at 220x for the 17.5", 166x with
the 13" and 100x with the 8".
Steve Gottlieb
N1224
03 11.2 +41 22
17.5: very faint, very small, round, small brighter core. Member of Abell 426.
U02598
03 14.1 +41 18
17.5: very faint, small, oval SW-NE, even surface brightness. Located 14'
WNW of N1250 within Abell 426.
U02608
03 15.0 +42 02
17.5: fairly faint, small, slightly elongated. Member of Abell 426.
Nearby are U02612 4.1' SE, U02618 11.3' ENE.
U02612
03 15.2 +41 59
17.5: very faint, very small, round, stellar nucleus or star superimposed.
A mag 13.5 star is 0.8' N. Located 4.1' SE of U02608 within Abell 426.
Z540-067
03 15.3 +41 37
17.5: extremely faint, very small, round. This member of Abell 426 is
located 3.0' E of mag 8.9 SAO 38677.
N1250
03 15.4 +41 21
17.5: fairly faint, fairly small, slightly elongated NNW-SSE, bright core,
faint almost stellar nucleus. Member of Abell 426.
U02618
03 16.0 +42 04
17.5: extremely faint, small, very elongated ~N-S, low even surface
brightness. Located 11.3' ENE of U02608 within Abell 426.
IC0309
03 16.1 +40 48
17.5: faint, small, round, even surface brightness, situated between two
mag 12 stars 1' NW and 1.4' SE. U02617 5' NNW not seen. Member of Abell
426.
U02619
03 16.3 +41 11
17.5: very faint, small, round. A mag 14 star is at the S edge and a mag
15 star is superimposed. Located 11.7' SW of IC 310 within Abell 426.
Appears brighter than UGC magnitude but is not listed in CGCG or MCG.
N1257
03 16.4 +41 32
17.5: faint, small, very elongated SW-NE, bright core. A mag 11 star is
attached at the NE end 0.4' from center which detracts from viewing.
Member of Abell 426. Very uncertain RNGC identification.
Z540-074
03 16.5 +41 38
17.5: very faint, small, very diffuse, low surface brightness. Located 6'
N of U02621 = (R)N1257 (and attached star) within galaxy cluster Abell 426.
Z540.079 lies 5' E.
IC0310
03 16.7 +41 19
17.5: fairly faint, fairly small, round, small bright core, faint stellar
nucleus. Forms a pair with U02626 = (R)N1259 in Abell 426.
U02626
03 17.0 +41 21
17.5: extremely faint, extremely small, pair of stars close NE. Located
3.7' NE of IC 310 within Abell 426. Incorrect identification in RNGC.
Z540-079
03 17.1 +41 38
17.5: very faint, very small, round. A mag 14 star is at the S end. Forms
a pair with an anonymous galaxy = CR 9 2' NE within Abell 426.
Cr 9
03 17.2 +41 39
17.5: very faint, small, elongated E-W. A mag 13 star is 2' E. Located 3'
NE of Z540-079 within Abell 426. Not listed in CGCG and MCG.
N1259
03 17.3 +41 23
17.5: extremely faint, very small. An extremely faint mag 15.5 star is at
the W edge. Located 3.7' NE of U02626 = (R)N1259. First of three with
N1260 and M+07-07-48 within Abell 426. Incorrect identification in the
RNGC.
M+07-07-048
03 17.5 +41 22
17.5: extremely faint, very small, slightly elongated. Follows three stars
by 1'. Located 2' ESE of N1259 and 2' S of N1260 within Abell 426.
N1260
03 17.5 +41 24
17.5: fairly faint, fairly small, oval ~E-W, weak concentration. This
member of Abell 426 is the brightest of three with N1259 2.2' SW.
U02639
03 17.8 +41 58
17.5: extremely faint, small, edge-on streak E-W. A mag 13 star is 1.1' N
of center. (R)N1265 lies 8' SE. Member of Abell 426.
Cr 16
03 17.9 +41 30
17.5: extremely faint, extremely small. Located 1' W of a faint double
star and 1.4' SSW of N1264 within Abell 426. Visible only momentarily with
averted vision.
Z540-085
03 17.9 +41 27
17.5: very faint, extremely small, round, even surface brightness. Three
stars forming a right triangle are 2'-3' W. Member of Abell 426.
Identified as N1264 in the RNGC.
N1264
03 18.0 +41 31
17.5: very faint, small, round, low surface brightness. An extremely faint
companion is 1.5' SSW. Member of Abell 426. Incorrect identification in
the RNGC.
IC0312
03 18.1 +41 45
17.5: faint, small, oval NW-SE, bright core. A mag 13 star is 1.2' E of
center. Forms a pair with an anonymous companion 1.9' SE within Abell 426.
Anon
03 18.2 +41 43
17.5: very faint, very small, elongated SW-NE. A mag 15 star is off the NE
edge. Located 2' SE of IC 312 within Abell 426.
Cr 19
03 18.3 +41 28
17.5: extremely faint, extremely small. Forms a very small triangle with a
mag 13.5 star less than 1' W and a mag 15 star less than 1' S. Cr 21 close
SE not seen. Member of Abell 426.
N1265
03 18.3 +41 51
17.5: very faint, small, round glow. This member of the Abell 426 cluster
is located just E of a mag 11 star and has a striking location. Forms a
pair with IC 312 6' SSW.
Z540-087
03 18.4 +41 25
17.5: faint, small, slightly elongated ~N-S. A mag 13.5 star is 0.8' N of
center. Member of Abell 426.
Z540-089
03 18.6 +41 28
17.5: extremely faint, extremely small, round. Two mag 14 stars are close
S just 16" and 32" from the center. Located 1.8' NW of N1267 and 1.8' SW
of N1268 in Abell 426.
13: extremely faint, at visual threshold, very small, very faint star at S
edge. Located 2' W of N1267/N1268 and first of four with N1270.
N1267
03 18.7 +41 28
17.5: faint, very small, round, faint stellar nucleus. Forms a close pair
with N1268 1.0' N with Z540-089 1.8' NW and N1270 2.6' E. Located in the
rich central section of Abell 426 with N1272 7.0' ENE and N1275 12.2' ENE.
13: very faint, small, compact, arc of stars just S. In a group of 4 in
Abell 426.
N1268
03 18.7 +41 29
17.5: extremely faint, extremely small, round, faint stellar nucleus.
Forms a close pair with N1267 1.2' S. Also very near are Z540-089 1.8' SW
and N1270 is 2.7' ESE. Located in the central core of Abell 426 with N1272
6.8' E.
13: extremely faint, very small, diffuse. Located 1' N of N1267 in Abell 426.
N1270
03 19.0 +41 28
17.5: faint, very small, slightly elongated ~N-S, small bright core.
Located in the central core of Abell 426 with N1267 2.6' W, N1268 2.7' WNW
and N1272 4.4' ENE.
13: faint, small, weak concentration. Last of four in a small group in the
core of Abell 426 with N1267 2.5' W.
N1271
03 19.2 +41 21
17.5: very faint, small, slightly elongated, bright core, faint stellar
nucleus. Member of Abell 426.
N1272
03 19.4 +41 30
17.5: fairly faint, small, round, small bright core. This galaxy is the
second brightest in Abell 426 and forms the SW vertex of a distinctive
parallelogram of brighter galaxies with N1275 5' ENE, N1273 3.1' NNE and
N1278/1277 7.5' NE. Also located midway between N1275 and N1270 4.4' WSW.
13: fairly faint, fairly small, bright core.
8: extremely faint, extremely small, round.
N1273
03 19.5 +41 32
17.5: faint, very small, round, small bright core. Forms the NW vertex of
a parallelogram of brighter galaxies in the core of Abell 426 with N1272
3.1' SSW, N1275 4.4' ESE, and N1278 5.3' ENE.
13: faint, small. Located 4.4' WNW of N1275 in the core of Abell 426.
M+07-07-061
03 19.6 +41 35
17.5: very faint, small, round. There is a small triangle of stars just S.
Located in the central core of Abell 426 2.8' NNE of N1273 and 4.5' NW of
N1275. Identified as IC 1907 in RC3 and PGC.
N1274
03 19.7 +41 33
17.5: faint, very small, weak concentration, slightly elongated. Located
in the dense central core of Abell 426 just 2.7' NW of N1275 and 2.6' E of
N1273.
13: very faint, very small, 2.7' NW of N1275, Abell 426.
Cr 35
03 19.8 +41 17
17.5: extremely faint, very small, slightly elongated. Located close W of
a mag 13.5 star. First of three with U02673 and Cr 39. Member of Abell
426.
Cr 36
03 19.8 +41 36
17.5: very faint, very small, oval. Located in the central core of Abell
426 on a line with N1277 and N1278 2' SE. This gx is identified as N1276
in RNGC although the NGC identification is uncertain.
N1275
03 19.8 +41 31
17.5: fairly bright, fairly small, oval ~E-W, small bright core. Largest
and brightest in the core of Abell 426. Surrounded by a swarm of faint
galaxies including N1272 5.2' WSW, N1273 4.4' WNW, N1274 2.6' NW, N1277
3.7' NNE, N1278 3.3' NNW, N1279 2.8' SE, N1281 7.8' NNE.
13: fairly bright, fairly small, small bright core.
8: extremely faint, extremely small, round. Similar with 6" mask on 17.5".
Cr 39
03 19.9 +41 18
17.5: extremely faint, very small, slightly elongated. A mag 15 star is
just 30" NW. Forms a trio with U02673 and Cr 35. Located 4' NW of U02673
within Abell 426.
N1277
03 19.9 +41 34
17.5: faint, very small, oval ~E-W, small bright core. Located in the
central core of Abell 426 3.7' N of N1275 and forms a close pair with N1278
0.8' SE.
13: very faint, extremely small. Located 0.8' NW of N1278.
N1278
03 19.9 +41 34
17.5: fairly faint, fairly small, oval, small bright core. Located in the
central core of Abell 426. Forms a close pair with N1277 0.8' NW. Located
at the NE corner of a parallelogram with N1275 3.4' SSW, N1272 7.5' SW and
N1273 5.3' WSW.
13: faint, small. Located 3.4' N of N1275 and forms a close pair with N1277.
Anon
03 20.0 +41 33
17.5: extremely faint, extremely small, round. Located in the core of
Abell 426 1.4' ESE of N1277 and 3.4' NE of N1275. This galaxy is not
listed in any catalogue.
U02673
03 20.0 +41 15
17.5: very faint, very small, round, weak concentration. Located 1' SW of
a double star 12/13 with a separation of 30". Forms a trio with Cr 35 and
Cr 39 within Abell 426.
13: very faint, very small. A mag 12 double star is close NE. Located
7.4' SSW of N1282.
N1279
03 20.1 +41 28
17.5: very faint, very small, slightly elongated ~N-S, visible continuously
with averted. Located in the central core of Abell 426 just 2.8' SE of
N1275! Not listed in MCG, CGCG or RC3 and incorrectly identified in PGC.
13: extremely faint, very small, near visual threshold. Located 2.8' SE of
N1275.
N1281
03 20.1 +41 38
17.5: faint, small, elongated WSW-ENE. Located in the central core of
Abell 426 1.0' NE of a mag 10 star. N1275 lies 7.8' SSW.
N1282
03 20.2 +41 22
17.5: faint, fairly small, oval SW-NE, bright core. Forms a pair with
N1283 2' NNE in the core of Abell 426. N1275 lies 10' NW.
13: faint, fairly small, diffuse halo, 10' SE N1275. Forms a pair with N1283.
N1283
03 20.3 +41 24
17.5: very faint, small, slightly elongated. Forms the S vertex of an
isosceles triangle with a mag 13.5 star 1' N and a mag 14 star 1' NNW.
This member of Abell 426 forms a pair with N1282 2' SSW.
IC0313
03 21.0 +41 54
17.5: very faint, very small, almost round. A mag 14 star is off the SE
edge 30" from center. Forms a pair with IC 316 4.5' NE within Abell 426.
IC0316
03 21.3 +41 56
17.5: faint, small, oval ~N-S, weak concentration. Located 5' ENE of IC
313 in Abell 426. A companion is superimposed 0.2' S which was not seen.
Z540-113
03 21.3 +41 28
17.5: very faint, extremely small, oval E-W. A mag 14 star is 30" S.
Located 3.5' SW of Z540-115 within Abell 426.
Z540-115
03 21.5 +41 30
17.5: very faint, very small, very elongated NW-SE. Located 7' N of N1293
in Abell 426. Forms a pair with Z540-113 3.5' SW.
N1293
03 21.6 +41 24
17.5: faint, small, round, faint stellar nucleus. Forms a pair with N1294
2' SSE. Member of Abell 426.
N1294
03 21.7 +41 22
17.5: faint, small, round, small bright core. Forms a pair with N1292 2'
NNW. Member of Abell 426.
U02698
03 22.1 +40 52
17.5: faint, very small, round. Located 44" WSW of a mag 10 star which
detracts from viewing. Member of Abell 426.
M+07-08-013
03 29.2 +41 23
17.5: very faint, very small, round. Two mag 15 stars are involved at the
W end and just off the NW end which confuse the observation. N1335 lies
19' NE. This galaxy is a possible outlying member of Abell 426.
Incorrectly identified in the RNGC as N1330 which doesn't exist at
Stephan's position.
N1334
03 30.0 +41 50
17.5: faint, fairly small, elongated 5:2 WNW-ESE, bright core. A mag 13.5
star is just off the WNW tip. An extremely faint stellar nucleus seen for
moments. N1335 lies 16' SSE. This is a possible outlying member of Abell
426.
N1335
03 30.3 +41 34
17.5: very faint, very small, round, an extremely faint star is possibly
involved, can just hold steadily with averted. Located 4' N of mag 8.5 SAO
38888. N1336 lies 16' NNW. Possible outlying member of Abell 426.