Iiro's DeepSky Sketches

Name: Hickson 57
RA: 11h 38m DEC: +21° 56'
Constellation: LEO
Type: Compact galaxy group
Magnitude: 13.7 (v)
Notes: The brightest galaxy NGC 3753
Observer: Iiro Sairanen
Location: Haakanala, Rautjärvi, Finland
Date: 30/31.3.2011 0:30
Instrument: Newton 457/2280 mm
Magnification: 326xFilter: -
Field: 15'Seeing: 3
Background sky: 2NE lim mag: 6.9
Visuality: 3Height: 50°
Weather: -14°C
Description: Copeland's Septet. A very interesting group of eight galaxies in Leo. At the first glance there are two groups each with three galaxies. The southern group consists of A (NGC 3753), C (NGC 3750) and D (NGC 3754) and the northern B (NGC 3746), E (NGC 3748) and G (NGC 3745). F (NGC 3751) lies little bit apart from others on the south. H (PGC 36010) is the faintest one and could be detected only with averted vision at 457x between E and a 12 mag star.
Updated: 19.4.2011 21:16