Arp 31 (Gx)
Image source: DSS II (blue) - 5'×5'
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| Name: |
IC167, UGC1313, Arp31 |
| Type: |
Gx |
| Constellation: |
Ari |
| Coordinates: |
01h51m08.65s / +21°54'44.80" |
| Brightness / Size: |
13m.6 / 2.9'×1.9' |
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About 5' northwestward you can find the very compact NGC694 with high surface brightness.
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| Robert Zebahl |
8" f/6, 150x, Bortle 4-, SQM-L 20.8
Extremely faint, small, roundish. Glimpsed with averted vision.
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DIFFICULT
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Arp 78 (GxG)
Image source: DSS II (blue) - 10'×10'
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| Name: |
Arp78 |
| Type: |
GxG |
| Constellation: |
Ari |
| Coordinates: |
01h59m18.00s / +18°59'30.00" |
| Group Members: |
| NGC770 |
(UGC1463) |
12m.9 |
1.1'×0.8' (10°) |
| NGC772 |
(IC646, UGC1466, H1.112) |
10m.3 |
7.4'×4.9' (135°) |
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| Robert Zebahl |
8" f/6, 80x, Bortle 3-, SQM-L 21.0
The bright NGC772 was already evident at 37x, oval with much brighter center and visible with direct vision. At 80x also the fainter companion NGC770 was well visible with averted vision as quite compact, roundish brightening.
NGC772 appeared in a 10 inch Dobsonian slightly drop-shaped.
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EASY
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| René Merting |
12.5" f/4.5, 206x, SQM-L 20.7
NGC 770: bei 103x indirekt bereits bei 103x sichtbar, bei 206x dann kompakt und mit hellerem Zentrum
NGC 772: bei 72x ist die Galaxie als kleine neblige Verdichtung erkennbar - ein matter Fleck, leichte Helligkeitszunahme zur Mitte hin - bei 103x wirkt die Galaxie sehr diffus, kompaktes Zentrum - bei 206x leichte, nicht greifbare Strukturen bei längerer Betrachtung
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EASY
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Arp 276 (GxG)
Image source: DSS II (blue) - 5'×5'
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| Name: |
Arp276 |
| Type: |
GxG |
| Constellation: |
Ari |
| Coordinates: |
02h28m12.00s / +19°35'40.00" |
| Group Members: |
| IC1801 |
(UGC1936) |
14m.0 |
1.4'×0.6' |
| NGC935 |
(UGC1937) |
12m.8 |
1.7'×1.1' |
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| Robert Zebahl |
8" f/6, 96x, Bortle 4, SQM-L 21.0
Conditions in the target region: SQM-L 20.9
I only saw NGC935 for sure: At 96x obviously oval, center seemed to be somewhat brighter, otherwise rather evenly bright. At 171x I could saw a stellar brightening within the halo. Probably this was the 14.27m foreground star southeast of the core. The axial ratio was about 1:2 to 1:3. IC1801 wasn't clearly visible to me.
Even under better conditions (Bortle 3-, SQM-L at the zenith 21.3) IC1801 was not visible at 171x.
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MODERATE
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