NGC4631 and Surroundings with ASTRA Telescope by Susy Ghia

Photo by Susy Ghia with ASTRA Remote Telescope #4 with SBIG ST-8300 CCD.

NGC4631 and surroundings

The photo has been processed with IRIS for registration and stacking than edited with Lightroom CC to make it a little prettier.

Dark, bias and flat have not been used, I used median addition to remove hot pixels and I used paint.net to create a mask to remove the background gradient using the light frame.

Closer look at NGC4631 and NGC4656

After processing the photo in LRGB to show it here, I also analyzed the luminance photo to search for some interesting objects, I used first Astrometrica for data calibration than with APT I extracted the source list with sky coordinates and apparent magniture for every star and non stellar objects, finally with Topcat and Aladin I searched for non stellar objects and gathered information using the CDS Portal website.

After analyzing the photo I found many dim galaxies that is worth to mention, so I will list them here, because I find it extremely fun and interesting to know some of the properties of these not so popular objects.

2MASX J12454632+3229168

Type: Galaxy
Coordinates: 12:45:46.28 +32:29:15.6
Redshift: 0.103445
Distance from Earth: 1.6 Billion Ly
Velocity: 30000 Km/s
Size: 200000 Ly

SIMBAD & NED

Image from CDS Portal

NGP9 F268-2001271

SIMBAD & NED
Many information on this object are missing unfortunately.

Coordinates: 12:45:35.68 +32:29:10.2
Image from CDS Portal

LEDA 1973273 (WISEA J124409.64+315749.7)

Name: LEDA 1973273 (WISEA J124409.64+315749.7)
Type: Galaxy
Coordinates: 12:44:09.39 +31:57:49.8
Redshift: 0.080139
Distance from Earth: 1.1 Billion Ly
Velocity: 24000 Km/s
Size: 70000 Ly

SIMBAD & NED

Image from CDS Portal

WISEA J124343.55+314954.8

Name: WISEA J124343.55+314954.8
Type: Galaxy
Coordinates: 12:43:43.51 +31:49:54.9
Redshift: 0.09264 +/- 0.00016 
Distance from Earth: 1.3 Billion Ly
Velocity: 30000 Km/s
Size: 160000 Ly

SIMBAD & NED

Image from CDS Portal

SDSS J124415.10+314242.3

Name: SDSS J124415.10+314242.3
Type: Galaxy
Coordinates: 12:44:15.41 +31:42:43.8
Redshift: 0.08168 +/- 0.00009	
Distance from Earth: 1.2 Billion Ly
Velocity: 25000 Km/s

SIMBAD & NED

Image from CDS Portal

2MASX J12392663+3159144

Name: 2MASX J12392663+3159144
Coordinates: 12:39:26.74 +31:59:15.9
Type: Galaxy
Redshift: 0.09911
Distance from Earth: 1.4 Billion Ly
Velocity: 30000 Km/s
Size: 120000 Ly

NED & SIMBAD

Image from CDS Portal

2MASX J12384558+3152468

Name: 2MASX J12384558+3152468
Type: Galaxy
Coordinates: 12:38:45.47 +31:52:47.3
Redshift: 0.022412
Distance from Earth: 300 Million Ly
Size: 80000 Ly
Velocity: 10000 Km/s

SIMBAD & NED

Image from CDS Portal

UGC 07779

Name: UGC 07779
Type: Galaxy
Coordinates: 12:36:29.92 +32:04:45.8
Redshift: 0.02355
Distance from Earth: 330 Million Ly
Velocity: 7000 Km/s
Size: 110000 Ly

SIMBAD & NED

Image from CDS Portal

2MASX J12364595+3206571

Name: 2MASX J12364595+3206571
Type: Galaxy
Coordinates: 12:36:46.08 +32:06:56.0
Redshift: 0.02365
Distance from Earth: 330 Million Ly
Velocity: 7000 Km/s
Size: 80000 Ly

SIMBAD & NED

Image from CDS Portal

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