Messier 10 - A nice globular cluster in Ophiuchus

Messier 10 is a globular cluster in the constellation Ophiuchus. It was discovered in 1764 and spans about two thirds the size of the full moon.

We imaged this target for just one 1 hour while waiting for Cygnus to be higher in the sky as our main target for the night was in that constellation. We usually don't image globular clusters with the small refractor telescope but we that was the only one we brought with us to the desert that night so we did not really have a choice!

M10 is best photographed at the end of Spring and beginning of Summer. Read our guide on the 15 best Astrophotography targets for Summer if you need some inspiration about what to image next!

One hour on Messier 10 in LRGB


Camera: ZWO ASI 1600MC

Telescope: Meade 70mm APO

Mount: Atlas EQ-G motorized Mount

Guiding: ZWO ASI 290MM Mini

Acquisition: ZWO ASIAIR

Power: Pegasus Astro Pocket Powerbox

Processing: PixInsight


Total Exposure Time: 1 hour

Exposure Time per frame: 30 seconds

Filters: L, R, G, B

GAIN: 75

How to find M10?

Messier 10 can be found in Ophiuchus very close to another cluster, M12. To quickly find it, scan the area north of the Scorpion's tail from the constellation Scorpius. M10 sits near the center of Ophiuchus.

Several other clusters can be seen in the constellation, like M14, M9 and M107.

Final Thoughts

Although this was only one hour of exposure and with a small telescope, it turned out pretty nice!

Messier 10 is not that impressive, and it’s not that colorful. Why do we bother imaging it?

Because we are on a quest to capture all Messier objects!

We only keep the images we are proud of and want our own Messier catalog to be completely filled with wonderful photos.

Make sure to follow us on Facebook, Instagram, and YouTube to stay up to date with our work!

Clear Skies,

Antoine & Dalia Grelin

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.

#M10 #Messier10 #RhoOphiuchi #cluster #Meade70mm #Meade #ASI1600MM

156 views0 comments

Recent Posts

See All


Quick Links

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.