Introduction | Map | My Own Photos | My Own Observations | References
On this page I collect my observations of the elliptical galaxy NGC 3842 in the constellation Leo, the brightest galaxy in the galaxy cluster Abell 1637, also called Leo Cluster. On the photos, you can find a number of other galaxies (also with the help of nova.astrometry.net).
The elliptical galaxy NGC 3842 in the constellation Leo is the brightest galaxy in the galaxy cluster Abell 1637, also called Leo Cluster.
The Leo Cluster (Abell 1367) is a galaxy cluster about 330 million light-years distant in the constellation Leo, with at least 70 major galaxies. All in all, the Leo Cluster comprises more than 500 galaxies (it should not be confused with the Leo I Group or the Leo Triplet). Along with the Coma Cluster, this cluster is one of the two major clusters comprising the Coma Supercluster (Wikipedia). The distances are in the 300 million light years range.
The galaxy known as NGC 3842 is the brightest member of this cluster. Nearby are the galaxies NGC 3837, NG 3840, NGC 3841, NGC 3842, NGC 3845 and NGC 3851.
According to Wikipedia, the largest members of Abell 1637 are: NGC 3842, NGC 3883, NGC 3884, NGC 3861A and B, NGC 3837, UGC 6697, NGC 3862, NGC 3864.
On an eVscope photo, I was able to find a number of (10) other galaxies with the help of nova.astrometry.net: NGC 3861, NGC 3860, NGC 3837, NGC 3851, NGC 3842, NGC 3841, NGC 3845, NGC 3844, NGC 3840, UGC 6697.
On an Vespera Pro photo, I was able to find the the following galaxies with the help of nova.astrometry.net (26 or 27): Abell 1367 (?), IC 732, IC 2951, IC 2955, NGC 3805, NGC 3816, NGC 3821, NGC 3834, NGC 3837, NGC 3840, NGC 3841, NGC 3842, NGC 3844, NGC 3845, NGC 3851, NGC 3857, NGC 3859 , NGC 3860, NGC 3861, NGC 3862, NGC 3864, NGC 3867, NGC 3873, NGC 3875, NGC 3883, NGC 3884, NGC 3886
| NGC 3842 | NGC 3837 | NGC 3840 | ||
| Size: 1.4' x 1.0' (Wikipedia) Distance: 280 million light years (Wikipedia) Rating: --- |
Size: 0.8' x 0.8' (Wikipedia) Distance: 272 million light years (Wikipedia) Rating: --- |
Size: 1.1' × 0.8' (Wikipedia) Distance: 327 million light years (Wikipedia) Rating: --- |
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| NGC 3841 | NGC 3845 | NGC 3851 | ||
| Size: 0.7' × 0.5' (Wikipedia) Distance: 282 million light years (Wikipedia) Rating: --- |
Size: 0.8' x 0.3' (Wikipedia) Distance: 252 million light years (Wikipedia) Rating: --- |
Size: 0.6' x 0.4' (Wikipedia) Distance: 284 million light years (Wikipedia) Rating: --- |
Overview: The elliptical galaxy NGC 3842 in the constellation Leo (selected) and other larger galaxies (Image Courtesy of SkySafari Astronomy, www.simulationcurriculum.com)
Closer view: The elliptical galaxy NGC 3842 in the constellation Leo (selected) and other near-by galaxies (Image Courtesy of SkySafari Astronomy, www.simulationcurriculum.com)
Details (similar to the photo): The elliptical galaxy NGC 3842 in the constellation Leo (selected) and other neighbor galaxies (Image Courtesy of SkySafari Astronomy, www.simulationcurriculum.com)
Overview
Closer overview (similar to my photo)
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NGC 3842 - May 31, 2021 |
NGC 3842 - May 31, 2021, photo left processed (Polarr) |
Evaluation* with nova.astrometry.net |
*) Galaxies found: NGC 3861, NGC 3860, NGC 3837, NGC 3851, NGC 3842, NGC 3841, NGC 3845, NGC 3844, NGC 3840
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NGC 3842 - May 31, 2021, photo processed (Polarr), galaxies marked |
NGC 3842 - May 31, 2021, photo left processed (Polarr), some marked galaxies named (UGC 6697 added) |
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Closer overview with Stellarium for comparison purposes |
Detail with Stellarium for comparison purposes |
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NGC 3842, Apr 14, 2025 - 2000p, 45 min |
NGC 3842, Apr 14, 2025 - 2000p, 45 min, processed |
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NGC 3842, Apr 14, 2025 - 2000p, 45 min, processed from TIFF |
NGC 3842, Apr 14, 2025 - 2000p, 45 min, processed from TIFF and denoised (PAI) |
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Evaluation* with nova.astrometry.net |
Evaluation* with nova.astrometry.net |
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NGC 3842, Apr 14, 2025 - 1800p, 45 min, section, 45 min, processed from TIFF and denoised (PAI) |
Evaluation** with nova.astrometry.net |
*) Galaxies found: Abell 1367 (?), IC 732, IC 2951, IC 2955, NGC 3805, NGC 3816, NGC 3821, NGC 3834, NGC 3837, NGC 3840, NGC 3841, NGC 3842, NGC 3844, NGC 3845, NGC 3851, NGC 3857, NGC 3859 , NGC 3860, NGC 3861, NGC 3862, NGC 3864, NGC 3867, NGC 3873, NGC 3875, NGC 3883, NGC 3884, NGC 3886
**) Galaxies found (section): Abell 1367 (?), IC 2951, IC 2955, NGC 3837, NGC 3840, NGC 3841, NGC 3842, NGC 3844, NGC 3845, NGC 3851, NGC 3857, NGC 3859 , NGC 3860, NGC 3861, NGC 3862, NGC 3873, NGC 3875
