М45 < М46 > М47 ...
Open star cluster M46
Open star cluster M46 is in the constellation Puppis (Pup).
Equatorial coordinates (epoch J2000):
Visual magnitude: 6,5m
Optimum magnification for a telescope with observations of M46, depending on the aperture of the telescope (D), is about D/6-D/3. Higher magnifications of course add details, but lead to a strong drop in the brightness of the image, making it difficult to observe.
Nikolay Kurdyapin, astro-map.com
© 2018, astro-map.com
At a reprint of materials from this site link to the astro-map.com obligatory.