NGC672NGC  (upper left) and IC1727 (lower right) are interacting galaxies.

The two galaxies are located in the northern constellation of Triangulum, positioned around 2° to the southwest of the star Alpha Trianguli. The original object designated NGC 672 was discovered by the German-born astronomer William Herschel on 26 October 1786, but this was later cataloged as NGC 614. The object now identified as NGC 672 was discovered by John Herschel on 11 November 1827.

NGC672, a spiral galaxy, is located at a distance of approximately 23.4 megalight-years from the Milky Way, where it forms an interacting pair with the irregular galaxy IC 1727. In the neutral hydrogen radio band, a tidal bridge (not visible here) is observed between the galaxies. NGC 672 appears to be the more massive of the two, and hence IC 1727 shows more distortion from the interaction. 

The morphological classification of NGC 672 is SB(s)cd, which indicates this is a barred spiral galaxy (SB), with no ring structure around the central bar (s), and moderately to loosely-wound spiral arms. In the visual spectrum, the galaxy appears symmetrical with clearly defined spiral arms. It is gas-rich with an estimated mass of 38 billion times the mass of the Sun and a star formation rate of 0.3 M☉ yr−1.[Source: Wikipedia].

CAPTURE Information:

The image was captured with the iOptron CEM120 mount , the venerable Meade 12"LX200 SCT, and my Atik 383L+ mono CCD at F7.16 (2182mm FL). Image subs were taken through Astronomik's filters Lum, R, G and B.

All subs were done at 1x1 bin, -10C. Lum at 10 min. each, and Red Grn and Blu at 5 min. each.

IMAGE information -- 2021

Lum (600s): 27 subs (4.50hr) on Jan 14th, 17th and 25th.

Red (300s): 20 subs (1.67hr) on Jan 14th and 17th.

Green(300s): 20 subs (1.67hr) on Jan 14th and 17th.

Blue (300s): 20 subs (1.67hr) on Jan 14th and 17th.

Processing was done with PixInsight, following (for the most part) kayronjm's tutorial of Feb. 24th from several years back. Only Lum was used to develop the Luminance image.

R, G and B were collected for the color mix.

North is up (pretty sure, or not), and this is a slight crop due to the various movement of different subs.

COMMENTS:

First time to capture this one, and somewhat late in the season. We had quite a bit of clouds which limited the integration time. Nevertheless, I feel it came out pretty good.