Mis à jour : 28 oct. 2019

The Leo Triplet, also called the M66 group, is a small group of spiral galaxies in Leo.

The Leo Triplet is composed of two Messier objects, M65 and M66, as well as NGC 3628, which is also called the Hamburger galaxy due to its shape.

When photographing this target, make sure you aim your camera properly so you can get all three of the galaxies showing nicely in your frame.

Below is our image of the Leo Triplet, and with all the details underneath.


Camera: Canon 7D Mark II

Telescope: Orion 8" Astrograph f/3.9

Mount: Atlas EQ-G motorized Mount

Coma: Baader MPCC Coma Corrector MkIII

Guiding: Starshoot Autoguider - 50mm Guide Scope

Processing: Pixinsight


Total Exposure Time: 3.45 hours

Exposure Time per frame: 3 minutes

69 lights - 15 Darks - 15 Bias

ISO: 800


The Leo Triplet can be found in the constellation of Leo, not far from Ursa Major and Virgo.

To locate it, first find the star Chertan which makes up part of the back legs of the lion, then move downward towards Virgo. You are likely to land on at least one of the three galaxies, so missing the remaining two is nearly impossible.

In dark skies, far from any light pollution, all three galaxies can be observed through binoculars. An 8” telescope is also ideal for viewing the group in one field of view.


The Leo Triplet can be a little scary to process for beginners who have never imaged more than one galaxy at a time before. Thankfully, all three of those galaxies are similar in size, color, and brightness, which makes the editing part much simpler than expected!

The image below (left) is one of our single, 3 minute shots of the triplet, followed by the final image. Note that our "main" final image (see top of the page) has been cropped and rotated to our liking.

Crop on Messier 65 (left), Messier 66 (middle) and NGC 3628 (right).

  • May be part of a bigger group

  • Messier 66 is the brightest of the three

  • All deformed by each other's gravity


Final Thoughts

The Leo Triplet is a very good target for amateur astrophotographers who are looking to image something a little more complicated than a single galaxy. M65, M66, and NGC 3628 can be photographed with pretty much any size telescope.

Clear Skies,

Galactic Hunter


The Astrophotographer's Guidebook

Description: Discover 60 Deep Sky Objects that will considerably improve your Imaging and Processing skills! Whether you are a beginner, intermediate, or advanced astrophotographer, this detailed book of the best deep sky objects will serve as a personal guide for years to come! Discover which star clusters, nebulae, and galaxies are the easiest and most impressive to photograph for each season. Learn how to find each object in the night sky, and read our recommendations on imaging them in a quick and comprehensive way. Each target in this guide contains our advice on imaging, photos of expected results, and a useful information table. We've also included a few cool facts about each target, a map to find it in the night sky, and more!

The Astrophotographer's Journal

Description: The Astrophotographer’s Journal is a portable notebook created for the purpose of recording observations, cataloguing photographs, and writing down the wonderful memories created by this hobby. This book contains more than 200 pages to memorialize your stargazing and imaging sessions, as well as a useful chart on the last pages to index exciting or important notes. Read back on the logs to see how much progress you have made through the months, the problems you overcame, and the notes taken to improve in the future. Just as the pioneers of astronomy did in their time, look up and take notes of your observations as you are the author of this star-filled journey.

The Constellations Handbook

Description: The Constellations Handbook is a logical guide to learning the 88 constellations. Learning the constellations is difficult. Remembering them is even harder. Have you ever wanted to look up to the night sky, name any pattern of stars and be able to tell their stories? This book groups the constellations in a logical order, so that the reader can easily learn them by their origin, and see how their stories interact with one another as a group. The last pages of this book include an index of all 88 constellations, each with a slot where you can write your own personal tips and tricks in order to memorize them with ease. The Constellations Handbook is not just another guide listing all the constellations from A to Z and their location, it is the perfect companion for stargazing, and a learning journey through the ages.

#astronomy #astrophotography #messiercatalog #messier #galaxy #nebula #cluster #stars #space #galactichunter #nevada #lasvegas #canon #orion #telescope #messier65 #Messier66 #leotriplet #M65 #M66 #Leo

1,936 vues0 commentaire

Posts récents

Voir tout



Social Media

  • Galactic Hunter Facebook
  • Galactic Hunter YouTube
  • Galactic Hunter Instagram
  • Galactic Hunter Amazon
  • Galactic Hunter Flickr
  • Galactic Hunter Twitter


  • YouTube Social  Icon
  • Facebook Social Icon
  • Instagram Social Icon
  • Flickr Social Icon

© 2016-2020 by Antoine Grelin.