Monday, April 03, 2017

imaged NGC 3384 and neighbours (Halifax)

BGO imaged NGC 3384 for me. A galaxy, with friends, in Leo. One of the RASC Finest NGCs. What an image. There's a little bit of everything in here.

That's Messier 105 (M105) at the 4 o'clock (west-south-west) position, big and bright, and NGC 3389 at 7 o'clock (south-south-east), classic spiral. It's curious to me that the two NGCs were not included in the Messier list.

RASC Finest galaxy NGC 3384 with friends in luminance

Luminance only, 60 seconds subexposures, 10 stacked shots. FITS Liberator, GIMP. North is up; east is left.

NGC 3384 does not appear to be a spiral. And it does not seem to be an elliptical (like the classic M105). SkyTools 3 Pro says it is a lenticular. aka MCG 2-28-12 and PGC 32292.

M105 is also known as NGC 3379, MCG 2-28-11, and PGC 32256.

The small spiral 3389 is aka MCG 2-28-13 and PGC 32306.

There's an interesting arrangement of three stars to the north-west of the centre galaxy. It looks like a triple star system but SkyTools does not identify them as such. ST3P only shows the single star J104755.4+124329 in this location. ST3P says they are unrelated.

If I hadn't know it was there, I would have missed it. Quasar NGC 3384 U4 is barely visible between GSC 00852-1189 (possibly magnitude 13.10) and J104749.7+124451 (mag 17.72). ST3P says the quasar mag is 18.9. ST3P says reports the redshift (z) at 1.11 and light time at 7.0 Gyr.

There's a faint amorphous fuzzy, LEDA 1414181, west-north-west of NGC 3384, between stars J104802.7+124015 and GSC 00852-0810.

LEDA 1410090 is due south of the target galaxy, forming a diamond with 3 stars including J104823.3+122802. Small, slightly oval.

LEDA 1410190 is north-west of J104823.3+122802. Round, brighter than 1410090.

LEDA 1410893 is east of the spiral. Faint, small, nearly round.

LEDA 1410257 is south-west of the 3384, well away, at the left edge of the image frame, near the triangle of stars including J104900.6+122920.

I like the grouping of stars including TYC 00852-1098 1 east of NGC 3389. The faint pair of stars including J104845.0+123405 is not identified as a double in ST3P.

LEDA 1412396 is a faint oval east of star GSC 00852-0787.

Star GSC 00852-1132, north-east of 3384, appears to have a faint companion. This does not show in SkyTools.


Wikipedia link: NGC 3384.

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