NGC 6744 (also known as Caldwell 101 or the Pavo Galaxy) is an intermediate spiral galaxy in the constellation Pavo (Peacock). Its velocity with respect to the cosmic microwave background is 802 ± 3km/s, which corresponds to a Hubble distance of 38.6 ± 2.7 Mly (11.82 ± 0.83 Mpc). However, 21 non redshift measurements give a distance of 23.63 ± 1.68 Mly (7.244 ± 0.514 Mpc). It was discovered on 30 June 1826 by Scottish astronomer James Dunlop, observing from Parramatta, Australia. It has a mass of 5.92×1010 M☉.
One of the largest spiral galaxies in the local universe, NGC 6744 is considered a Milky Way mimic in the immediate vicinity, displaying remarkable star formation, flocculent (fluffy) arms, and an elongated core. It has at least one distorted companion galaxy (NGC 6744A) superficially similar to one of the Magellanic Clouds.
NGC6744 is a LINER galaxy, i.e., its nucleus has an emission spectrum characterized by broad lines of weakly ionized atoms.[7] The galaxy has an active galactic nucleus (AGN) of low luminosity.
NGC 6744 lies within the Virgo Supercluster.
| Object | NGC6744 Pavo Galaxy |
| Constellation: | Pavo. (Peacock) |
| Position: | RA 19h 09m 46s Dec -63° 27' 45'' |
| Apparent Size: | 20.0 × 12.9′ arcmins |
| Apparent Magnitude: | 9.14 |
| Distance in light years: | 23.6 Mly |
| Photo Data | |
| Date: | 13 May 2023 - 07 Oct 2023 |
| Location: |
El Sauce Observatory Chile (1525m ASL) GPS: 30.472529° S, 70.762999° W |
| Telescope: | CHI-1-CMOS: Planewave CDK24 610 mm, f/d 6.5/3962mm |
| Camera: | QHY 600M Pro, 3.76μm, 9576 x 6382px, Bin-2 4788x3191px, @ T sensor = -10°C |
| Field of View: | 31x21 arcmins |
| Pixel Scale/Resolution: | 0.39 arcsec/px |
| Expose frames/times: | L 54x300s, R 39x300s, G 50x300s, B 40x300s, H 3x300s |
| Total expose: | 15h 30min |
| Filter: | Astrodon Luminance, Red, Green, Blue, Ha (3nm) |
| Mount: | Mathis MI-1000/1250 with absolute encoders |
| Software: | Siril 1.4, Photoshop CC |
| Remarks: |
© Photos and photo data by Peter Cerveny
© Object description/intro text fully or partially by Wikipedia,
which is released under the Creative Commons Attribution-ShareAlike 4.0 International License