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On this page I collect my observations of the spiral galaxy NGC 3753 in the constellation Leo, which together with other galaxies forms the galaxy group Arp 320 (Copeland's Septet).
NGC 3753 is a spiral galaxy (type Sab) in the constellation Leo. The galaxy was discovered on February 9, 1874 by the British astronomer Ralph Copeland. Together with NGC 3745, NGC 3746, NGC 3748, NGC 3750, NGC 3751 and NGC 3754, the galaxy NCG 3753 forms the galaxy group Arp 320, also known as Copeland's Septet after its discoverer.
Further galaxies on the currently only photo are: NGC 3808, NGC 3772, IC 2940, NGC 3743, and NGC 3758. They are not discussed here.
| NGC 3753 | NGC 3750 | NGC 3754 | ||
| Size: 1.7' x 0.5' (Wikipedia) Distance: 388 million light years (Wikipedia) Rating: --- |
Size: 0.5' x 0.4' (Wikipedia) Distance: 404 million light years (Wikipedia) Rating: --- |
Size: 1.7' x 0.5' (Wikipedia) Distance: 399 million light years (Wikipedia) Rating: --- |
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| NGC 3745 | NGC 3746 | NGC 3748 | ||
| Size: 1.7' x 0.5' (Wikipedia) Distance: 421 million light years (Wikipedia) Rating: --- |
Size: 1.7' x 0.5' (Wikipedia) Distance: 401 million light years (Wikipedia) Rating: --- |
Size: 1.7' x 0.5' (Wikipedia) Distance: 392 million light years (Wikipedia) Rating: --- |
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| NGC 3751 | ||||
| Size: 1.7' x 0.5' (Wikipedia) Distance: 418 million light years (Wikipedia) Rating: --- |
Overview: The spiral galaxy NGC 3753 in the constellation Leo (selected) and other larger galaxies (Image Courtesy of SkySafari Astronomy, www.simulationcurriculum.com)
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NGC 3753, Apr 14, 2025 - 3000p, 45 min, large section, processed from TIFF |
NGC 3753, Apr 14, 2025 - 3000p, 45 min, large section, processed fro TIFF and denoised (PAI) |
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*) Evaluation Galaxies in Arp 320:
Further galaxies on the photo:
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Evaluation* with nova.astrometry.net |
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NGC 3753, Apr 14, 2025 - 1200p, 45 min, tight section, processed from TIFF |
NGC 3753, Apr 14, 2025 - 1200p, 45 min, tight section, processed from TIFF and denoised (PAI) |
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NGC 3753, 14.4.2025 - 1200p, 45 min, 600 Pixel-enger Ausschnitt, aus TIFF bearbeitet und entrauscht (PAI), Galaxien markiert |
Evaluation* with nova.astrometry.net |
*) Evaluation: Galaxies in Arp 320
