Category Archives: Globular Cluster

Messier 2 (M2) – Globular Cluster in Aquarius

Here is a view of Messier 2 (M2), a bright globular cluster in the constellation Aquarius. M2 is about 37,500 light-years away and is one of the older globs in the Milky Way.

Messier 2 (M2) – Globular Cluster in Aquarius

Tech Specs: Meade 12” LX90, Celestron CGEM-DX mount, Canon 6D stock camera, ISO 2500, 16 x 60 seconds using Backyard EOS, 3 x 60 sec darks and 3 x 1/4000 sec bias frames, guided using a Canon 100mm lens with an attached ZWO ASI290MC camera. Image Date: October 17, 2017. Location: The Dark Side Observatory in Weatherly, PA.

Clear skies!

…Tom

NGC 6934 – Globular Cluster in Delphinus

NGC 6934 is a nice globular cluster found in the constellation Delphinus and lies about 50,000 light-years away.

NGC 6934 – Globular Cluster in Delphinus

Tech Specs: Meade 12” LX90, Celestron CGEM-DX mount, Canon 6D stock camera, ISO 2500, 8 x 60 seconds using Backyard EOS, 3 x 60 sec darks and 3 x 1/4000 sec bias frames, guided using a Canon 100mm lens with an attached ZWO ASI290MC camera. Image Date: October 16, 2017. Location: The Dark Side Observatory in Weatherly, PA.

Clear skies!

…Tom

Globular Cluster Messier 71 (M71) in Sagitta

Sagitta is a small constellation found between the bright stars Vega and Altair. The name is Latin for arrow and represents the weapon that Hercules used to kill the eagle (Aquila). There is one nice Messier object contained in this constellation, the globular cluster designated as M71. The famous Dumbbell Nebula lies nearby, but it lies just over the border in the constellation Vulpecula.

M71 is about 12,000 light years away from Earth and is about 27 light years across. Up until the 1970’s this cluster was designated as a densely packed open cluster because of the loose central region, today it is designated as a loosely concentrated globular cluster with a young age of 9-10 billion years.

Globular Cluster Messier 71 (M71) in Sagitta

Tech Specs: Meade 12” LX90, Celestron CGEM-DX mount, Canon 6D stock camera, ISO 1600, 17 x 60 second exposures using Backyard EOS, 3 x 60 sec darks and 3 x 1/4000 sec bias frames, guided using a Canon 100mm lens with an attached ZWO ASI290MC camera. Image Date: September 9, 2017. Location: The Dark Side Observatory in Weatherly, PA.

Clear skies!

…Tom

 

Messier 13 – Globular Cluster in Hercules

Certainly not the first time I have imaged this huge globular cluster, nor will it be my last. This is the first test of the new pier setup in my observatory. It is hard to believe that there are over 300,000 stars in this cluster! Quick six-minute total exposure.

Tech Specs: Meade 12” LX90, Celestron CGEM-DX mount, 400mm guiding lens, Antares Focal Reducer, ASI290MC guide camera, Canon 6D, 6 x 60 seconds at ISO 3200. Captured with Backyard EOS and stacked in DeepSkyStacker.

…Tom

Globular Cluster Messier 3 (M3)

Messier 3 (also known as M3 or NGC 5272) is a globular cluster found in the northern constellation of Canes Venatici. M3 is one of the three brightest globular clusters in the Northern hemisphere (along with M13 and M5).

Tech Specs: This image is composed of 8 x 60 second images at ISO 3,200 with 4 x 60 second darks and 4 x 1/4000 second bias frames using a Meade LX90 12” telescope and Canon 6D camera mounted on a Celestron CGEM-DX mount. Guided using a Canon 400mm lens and ZWO ASI290MC camera. Imaging was done on April 14, 2017 from Weatherly, Pennsylvania.

SEDS (http://messier.seds.org/m/m003.html)

Wikipedia (https://en.wikipedia.org/wiki/Messier_3)

…Tom

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