Galaxy pair in Leo (M 65, M 66)

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About this Image

This pair of galaxies consists of the Messier objects M65 (right) and M66 (left). Together with NGC3628 they form a beautiful and photogenic group which is frequently referred to as the Leo Triplett;
M66 also is known as Arp 16 and shows some nice H-alpha areas and a faint halo).
Lying at a distance of some 35 million light years, it is probably physically related to the M96 group.


Technical Details


16" cassegrain in secondary focus at f/10

Mount MK-100 GEM
Camera SBIG STX-16803 at -30C, STX filter wheel
Filters Baader LRGB 65x65mm filters
Date March-April 2010
Location Wildon/Austria
Sky Conditions mag 5-5.5 sky, 1.8-2.2" FWHM, temperature 0-10 C
Exposure L:R:G:B = 200:60:60:60 minutes (20-minute sub-exposures),
Programs used: Maxim DL 5
Photoshop CS3