M 35 and NGC 2158
Open Star Clusters
Messier 35 and NGC 2158 are open cluster in the constellation of Gemini. The two clusters are unrelated and 9,000 light years far awy from each other.
NGC 2158 is believed to be about 2 billion years old, and its stars are strongly concentrated, similar to a globular cluster. Previously, it was mistaken for such due to its concentration; however, due to its age, the identification as an open star cluster is unequivocal.
When NGC 2158 is observed alongside M35 in the telescope's field of view, the contrast in size and star density becomes particularly evident. NGC 2158 is five times farther away but has at least 10 times more stars and a much higher age.
When NGC 2158 is observed alongside M35 in the telescope's field of view, the contrast in size and star density becomes particularly evident. NGC 2158 is five times farther away but has at least 10 times more stars and a much higher age.
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Top Pick on AstrobinImage Details
| Date |
January 28, 2024 |
| LOCATion |
Hannover (Germany) |
| Sky Quality |
Bortle 5 |
| Telescope |
Skywatcher 200/1000 @950mm f/5 |
| Mount |
Skywatcher EQ6-R Pro |
| Main Camera |
ZWO ASI 2600 MC Pro Gain 100, Offset 18, -10° |
| Focuser |
ZWO EAF |
| Filter |
Baader UV/IR Cut
|
| Exposure |
RGB: 362 × 30″ (3h 1′) |
| Guiding |
ZWO ASI 120MM, PHD2 |
| Calibration |
Flats, Darks, Darkflats |
| Software |
N.I.N.A., EQMod |
| Processing | Astropixelprocessor, Photoshop, Pixinsight |
Gallery
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The Crescent Nebula
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Cave Nebula
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Lion Nebula
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Ghost of Cassiopeia
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IC 447
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Coathanger, Loch Ness a.o.
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Sh2-140
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Comet C/2022 E3 (ZTF)
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Clamshell Nebula
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Clamshell Nebula in HOO
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The Dark Mermaid
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NGC 6914
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Bode's Galaxy
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Butterfly Nebula (IC 1318)
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Butterfly Nebula (HOO)
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NGC 7822
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Cone Nebula (RGB)
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Cone Nebula (HOO)
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Loch Ness Nebula
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Heart Nebula
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Heart & Soul Nebula
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Iris Nebula
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Horsehead Nebula
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Horsehead Nebula (SHO)
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Pinwheel Galaxy
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Elephant's Trunk Nebula
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Sh2-134 Widefield
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Flaming Star Nebula
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IC 410
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M 13
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M 38 in HaRGB
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Andromeda Galaxy
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NGC 5033 & Friends
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Orion Nebula
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Leo Triplet
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Jellyfish Nebula
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Jellyfish Nebula in HOO
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Regulus & Leo I Dwarf Galaxy
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Sh2-86
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M 3
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h and χ Persei (HaRGB)
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h and χ Persei (RGB)
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VDB 14 & 15
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Northamerica Nebula
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M 106
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Sh2-120 & NGC 7031
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NGC 188
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Tulip Nebula
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Markarian's Chain
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Wizard Nebula
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Bubble & Lobster Claw Nebula
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Copernicus
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M 35 & NGC 2158
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Mare Imbrium
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M 44
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M 53 & NGC 5053
