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Last update: 2018-06-17

VdS FG

- Galaxies of the Arp Catalogue (UMa) -

And (4) Cep (3) CVn (5) Lep (1) Peg (11) Tri (1)
Ari (3) Cet (1) Dra (1) LMi (4) Per (1) UMa (17)
Boo (1) Cnc (1) Gem (1) Lyn (2) Psc (5) UMi (1)
Cam (3) Com (3) Leo (10) Ori (1) Ser (2) Vir (6)

Arp 1 (GLX)

DSS
© DSS II (blue) - 5×5'
Name: NGC2857, UGC5000, Arp1
Type: GLX
Constellation: UMa
Coordinates: 09h24m37.70s / +49°21'25.69"
Brightness / Size: v12.3 mag / 2.2x2.0'
8" f/6, 150x, Bortle 4
Round, evenly bright, very faint.
DIFFICULT

Arp 18 (GLX)

DSS
© DSS II (blue) - 6×6'
Name: NGC4088, UGC7081, Arp18, H1.206
Type: GLX
Constellation: UMa
Coordinates: 12h05m34.19s / +50°32'20.50"
Brightness / Size: v10.6 mag / 5.6x2.1'
8" f/6, 37x, Bortle 6+, NELM 5.3, SQM-L 19.7
At 37x obviously elongated, rather evenly bright. At 80x the center appeared bulgy. I should have a closer look next time.
EASY

Arp 26 (GLX)

DSS
© DSS II (blue) - 29×29'
Name: M101, NGC5457, UGC8981, Arp26, Pinwheel Galaxy
Type: GLX
Constellation: UMa
Coordinates: 14h03m12.58s / +54°20'55.50"
Brightness / Size: v7.9 mag / 28.5x28.3'
B 40mm, 8x, Bortle 7, NELM 5.0, SQM-L 19.2
Quite faint, relatively large, round, evenly bright.

DIFFICULT
B 40mm, 8x, Bortle 5, NELM 5.5
Barely seen with direct vision. Less evident. Quite large, roundish, nearly evenly bright.

EASY
S 60mm, 23x, Bortle 7
Observed from city with a cheap spotting scope from a discounter! Difficult to hold. Relatively large, round, almost evenly bright glow.

DIFFICULT
4.5" f/8, 28x, Bortle 4, NELM 6.0
Large, very diffuse, slight brightening toward the middle, nearly round.

EASY
8" f/6, 37x, Bortle 4
Large, bright, diffuse nebula with slightly brighter center. At 100x tendency of spiral structure. I will spend more time for extracting some details!
EASY

Arp 27 (GLX)

DSS
© DSS II (blue) - 5×5'
Name: NGC3631, UGC6360, Arp27, H1.226
Type: GLX
Constellation: UMa
Coordinates: 11h21m02.94s / +53°10'09.95"
Brightness / Size: v10.4 mag / 5.0x4.8'
8" f/6, 37x, Bortle 4
At 37x moderately large, roundish, diffuse, nearly evenly bright with slightly brighter core. At 100x the core area is brighter, roundish and obviously extended. Bright core surrounded by faint halo. Core area seems little shifted to geometric center.
EASY

Arp 104 (GLXGRP)

DSS
© DSS II (blue) - 8×8'
Name: Arp104, Keenan's System
Type: GLXGRP
Constellation: UMa
Coordinates: 13h32m10.00s / +62°44'00.00"

Group Members:
NGC5216 (UGC8528, H2.841) v12.6 mag 1.8x1.2' (135°)
NGC5218 (UGC8529, H2.842) v12.3 mag 1.8x1.3' (80°)
On the DSS image the connection of both galaxies is apparent. NGC5218 is a spiral (SBb), whereby NGC5216 is an elliptical galaxy of the type E0.

8" f/6, 200x, Bortle 5
Under moderate conditions I could only see the brighter NGC5218 as roundish, faint brightening. NGC5216 stayed hidden to me, but should be surely visible with 8 inch aperture.
MODERATE

Arp 155 (GLX)

DSS
© DSS II (blue) - 5×5'
Name: NGC3656, UGC6403, H2.782, Arp155
Type: GLX
Constellation: UMa
Coordinates: 11h23m38.59s / +53°50'31.38"
Brightness / Size: v12.5 mag / 1.5x1.5'
The southern lump of NGC3656 is MCG+9-19-64 (b15.0m, 0.4x0.2'). Both form Arp155.

8" f/6, 200x, Bortle 3, NELM 6.5, SQM-L 21.6
Barely seen with direct vision. Roundish to slightly oval, nearly evenly bright. The southern extension (=MCG+9-19-64) wasn't visible.

EASY
8" f/6, 100x, Bortle 4
Fairly small, roundish, evenly bright. Located nearby an evident 12.77m field star.
MODERATE

Arp 205 (GLXGRP)

DSS
© DSS I - 10×10'
Name: Arp205
Type: GLXGRP
Constellation: UMa
Coordinates: 10h54m30.00s / +54°18'00.00"

Group Members:
NGC3448 (UGC6024, H1.233) v11.6 mag 5.6x1.7' (65°)
UGC6016 b17.0 mag 2.1x1.2' (30°)
The much more fainter companion UGC6016 is located southwest of NGC3448 and faintly visible on the DSS image.

8" f/6, 80x, Bortle 4, SQM-L 21.2
I only focused on the bright NGC3448 of course: At 37x just a small, elongated nebula. At 80x bright, very elongated, pretty thin and evenly bright.
EASY

Arp 214 (GLX)

DSS
© DSS II (blue) - 12×12'
Name: NGC3718, UGC6524, Arp214, H1.221
Type: GLX
Constellation: UMa
Coordinates: 11h32m34.94s / +53°04'04.18"
Brightness / Size: v10.6 mag / 8.2x3.5'
8" f/6, 100x, Bortle 4
At 37x barely seen with direct vision. At 100x relatively large, diffuse, slightly oval. Obvious star pair SSW. Mottled with averted vision.
EASY

Arp 217 (GLX)

DSS
© DSS II (blue) - 5×5'
Name: NGC3310, UGC5786, Arp217, H4.60
Type: GLX
Constellation: UMa
Coordinates: 10h38m45.86s / +53°30'11.89"
Brightness / Size: v10.6 mag / 3.1x2.4'
8" f/6, 37x, Bortle 4, SQM-L 21.2
At 37x quite compact, high surface brightness. Can be easily overlooked. At 80x the galaxy appears more like a planetary nebula, evenly bright, round with a well defined shape. At 200x the center appears a bit brighter. The galaxy fades toward north and northeast, whereby the brighter center seems to be slightly shifted southwards.
EASY

Arp 224 (GLX)

DSS
© DSS II (blue) - 5×5'
Name: NGC3921, UGC6823, Arp224, H2.788
Type: GLX
Constellation: UMa
Coordinates: 11h51m06.86s / +55°04'43.38"
Brightness / Size: v12.4 mag / 2.1x1.3'
8" f/6, 100x, Bortle 4
Roundish with slightly brighter core.
MODERATE

Arp 234 (GLX)

DSS
© DSS II (blue) - 5×5'
Name: NGC3738, UGC6565, Arp234, H2.783
Type: GLX
Constellation: UMa
Coordinates: 11h35m47.10s / +54°31'32.00"
Brightness / Size: v11.5 mag / 2.6x2.2'
8" f/6, 100x, Bortle 4
Already seen at 37x as small, roundish, faint nebula with averted vision. At 100x slightly oval with a bit brighter core.
EASY

Arp 280 (GLXGRP)

DSS
© DSS I - 8×8'
Name: Arp280
Type: GLXGRP
Constellation: UMa
Coordinates: 11h37m47.00s / +47°53'30.00"

Group Members:
NGC3769 (UGC6595, H2.731) v11.8 mag 2.9x1.0' (150°)
NGC3769A v14.2 mag 0.9x0.3' (105°)
120mm f/5, 85x, Bortle 6-, NELM 5.0, SQM-L 19.2 FAILED

Arp 285 (GLXGRP)

DSS
© DSS II (blue) - 8×8'
Name: Arp285
Type: GLXGRP
Constellation: UMa
Coordinates: 09h24m10.00s / +49°13'30.00"

Group Members:
NGC2854 (UGC4995, H3.714) v13.0 mag 1.6x0.6' (45°)
NGC2856 (UGC4997, H3.713) v13.2 mag 1.1x0.5' (135°)
8" f/6, 150x, Bortle 4
Both galaxies are well visible with averted vision, slightly oval and at right angle to each other.
MODERATE

Arp 294 (GLXGRP)

DSS
© DSS II (blue) - 8×8'
Name: Arp294
Type: GLXGRP
Constellation: UMa
Coordinates: 11h39m42.00s / +31°55'30.00"

Group Members:
NGC3786 (UGC6621) v12.3 mag 2.1x1.1' (60°)
NGC3788 (UGC6623) v12.5 mag 2.1x0.7' (175°)
120mm f/5, 85x, Bortle 4, SQM-L 21.3
NGC3788 was already visible at 48x and appeared elongated and evenly bright. At 85x NGC3786 was seen as faint, oval, evenly illuminated brightening.

MODERATE
8" f/6, 96x, Bortle 4
Worthwhile! NGC3786 appears oval, NGC3788 more elongated & thin. Both galaxies are nearly perpendicular with almost touching endings.
MODERATE

Arp 322 (GLXGRP)

DSS
© DSS II (blue) - 5×5'
Name: Arp322
Type: GLXGRP
Constellation: UMa
Coordinates: 11h32m40.00s / +52°56'40.00"

Group Members:
PGC35609 b16.5 mag 0.5x0.3' (170°)
PGC35615 b17.0 mag 0.5x0.3' (148°)
PGC35618 b15.9 mag 0.8x0.6' (72°)
UGC6527 (PGC35620) v14.6 mag 0.8x0.4' (53°)
The eastern, very elongated & thin galaxy PGC35631 is not part of Arp322, but forms Hickson 56 together with the other galaxies.

8" f/6, 200x, Bortle 3, NELM 6.5, SQM-L 21.6
Difficult. Nearly permanently held with averted vision as very compact, slightly elongated brightening, which is UGC6527 and maybe the two western galaxies PGC35615 and PGC35618. At 265x I thought to have seen two separate brightenings, but not for sure.
DIFFICULT

Arp 336 (GLX)

DSS
© DSS II (red) - 5×5'
Name: NGC2685, UGC4666, Arp336, Helix Galaxy
Type: GLX, SY2
Constellation: UMa
Coordinates: 08h55m34.75s / +58°44'03.87"
Brightness / Size: v11.3 mag / 4.6x2.1'
8" f/6, 80x, Bortle 4
Barely seen with direct vision. Slightly elongated with bright, round and compact core area.
EASY

Arp 337 (GLX)

DSS
© DSS II (blue) - 12×12'
Name: M82, NGC3034, UGC5322, Arp337, H4.79
Group: M81 Group, Virgo Supercluster
Type: GLX
Constellation: UMa
Coordinates: 09h55m52.43s / +69°40'46.93"
Brightness / Size: v8.4 mag / 11.2x4.3'
B 40mm, 8x, Bortle 7, NELM 5.0, SQM-L 19.2
Elongated, thin, evenly bright. At the limit of perception.

DIFFICULT
B 40mm, 8x, Bortle 5+, NELM 5.7+, SQM-L 20.9
Very elongated, thin, evenly bright. Not particularly evident. Only well visible with averted vision.

EASY
70mm f/5.7, 12x, Bortle 4, SQM-L 21.3
At 12x easily visible as elongated nebula. At 112x the dark lanes were pretty evident with averted vision.

EASY
80mm f/6.25, 25x, Bortle 6, NELM 5.0, SQM-L 19.4
At 25x elongated, fairly thin, nearly evenly bright. Barely visible with direct vision. At 62x I could glimpse at least 2 dark lanes.

EASY
4.5" f/8, 28x
Observation from outskirts at almost full moon with a angular distance of 60° from M82! At 28x barely seen with direct vision, very elongated, fairly thin, nearly evenly bright. Cigar-shaped. At 72x 2-3 dark lanes visible with averted vision, most obvious on the eastern edge.

EASY
120mm f/5, 18x, NELM 5.0
Observation at full moon: At 18x thin, elongated, evenly bright. At 75x 2 dark lanes apparent with averted vision.

EASY
8" f/6, 37x, Bortle 4
Very bright, cigar-shaped, slight brightening toward the middle. At 100x up to three dark lanes across the width are evident with averted vision. The dark lane on the east side is most obvious. Awesome!
EASY