Friday, April 12, 2013

Lion's Den

Leo is a magnificant constellation for its meteor shower and closeness to equator, Regulus (alpha Leo) is about 1 degree north of equator.

NGC 2903 is a spiral galaxy close to the mouth, put Lambda Leo at center of finder, about 2/3 of the radius south, looking for a star of 7 mag (unique in the area), center finder there and look through ep. the elongated faint smudge of light at east south edge of ep should be it!

M105/NGC 3384/NGC 3389, draw a line connect Alpha and Theta, put the finder on the line around 40% of the distance from theta, looking for two stars, of 5.5 mag, vertically separated 3.5 deg, and center the finder in the middle of these two stars, M105 should be in ep!

M105 is round and easy to see, NGC 3384 is elliptical and darker, south east of them are three stars line up in ep, around the barycenter is NGC 3389, it is very dim and negligible!

Going south for anothe degree, M96 jumps into my ep, it is elliptical, about same magnitude as M105, continue going west while keep M96 in ep, M95 will be included, it is round, also same magnitude.

Leo Triplet refers M66/M65/NGC3628, put the finder on Chort (theta leo), there should a 5 mag star around south edge of finer, assume it is 6 o'clock, center finder around 7 o'clock, M65 should be in ep, hove around east, the leo triplet should be contained within one ep! M65/66 are elliptical, NGC3628 looks like cigar!

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