Galaxy
Leo Triplet
Messier 65, Messier 66 and NGC 3628 Galaxies

Object :	Leo Triplet
Coordinates/Direction :	RA: 11h17m, DEC: +13^o25'
Find in constellation :	Leo
More to know :	Wikipedia: https://en.wikipedia.org/ wiki/ Leo Triplet

Object :	M65 (NGC 3623)
Coordinates/Direction :	RA: 11h18m, DEC: +13^o05'
Object size :	8.7' x 2.5'
Apparent magnitude :	9.3
Distance :	41 Mly
Type :	SAB
Discovered by :	Pierre Mechain, year 17??
More to know :	Wikipedia: https://en.wikipedia.org/ wiki/ Messier_65

Object :	M66 (NGC 3627)
Coordinates/Direction :	RA: 11h20m, DEC: +12^o59'
Object size :	9.1' x 4.2'
Apparent magnitude :	8.9
Distance :	31 Mly
Type :	SAB
Discovered by :	Charles Messier, year 1780
More to know :	Wikipedia: https://en.wikipedia.org/ wiki/ Messier_66

Object :	NGC 3628
Coordinates/Direction :	RA: 11h20m, DEC: +13^o35'
Object size :	14' x 3.6'
Apparent magnitude :	9.5
Distance :	35 Mly
Type :	SAb
Discovered by :	Charles Messier, year 1784
More to know :	Wikipedia: https://en.wikipedia.org/ wiki/ NGC_3628

Leo Triplet, 2020-03-21, modern processing

Leo Triplet, M65, M66 and NGC 3228l Galaxies, 2020

(Click on image to get one in full resolution, opens in a new window)

Date :	2020-03-21
Time (UT) :	21:37 to 22:21

Mount :

SkyWatcher EQ6 Pro, Beltdrive (DIY 2019)

Guide :

QHY5 camera with 400 mm f/6.3 lens

Lens/telescope :	TS130 APO f/7 910mm, 3" focuser
Corrector/Barlow :	3" field flatter, 1.0x
Field (FOV) :	2.25 x 1.5^o (full frame) before crop

camera :	Canon 6D, QE=0.5, full frame, 20 Mpixel, 14 bit
camera temperature:	About 6^o C above surrounding temperature
Film/CCD :	Raw, Cr2
Filter :	none

Control system:

Mount, camera, focus, guide (Ekos) controlled by Astroberry (KStars/Ekos Linux)

Exp. time :	32x60 seconds, iso1600, dithering mode
Image process tool :	Siril, Gimp, Irfanview
Processing :	synthetic bias, flat, photometric color calibration
Weather :	clear, temperature 0^o C

Site :

Sweden, Stockholm, Hagsätra. Bortle 9
Free view Az: 20^o to 90^o, 165^o to 185^o, Alt: 20^o to 55^o

Comment :

Four years later I processed the photos I took the night after. Now with more modern tools and it really helped. The sensor was very dirty, but not much of that can be seen here. There are many other objects than these three, see: Leo triplet plate solved, opens in a new window.

Leo Triplet, 2020-03-20

Leo Triplet, M65, M66 and NGC 3228l Galaxies, Sweden 2020