Imaging Projects

In this blog, I will share the results of all of my imaging projects. The newest will be at the top and the oldest will be further down the stack. Going back in time here is interesting - some of my early stuff was pretty rough - but I did not see it that way at the time - I was thrilled to get anything back that looked like an image! Hopefully, you will see how my work has progressed with time!

SH2-73 - An Integrated Flux Nebula in Hercules -   9.8 hours in LRGB
Patrick A. Cosgrove Patrick A. Cosgrove

SH2-73 - An Integrated Flux Nebula in Hercules - 9.8 hours in LRGB

SH2-73 was originally cataloged as an emission nebula. This was a mistake - it is actually a reflection nebula, illuminated by the light of the entire Milky Way Galaxy! This makes it an Integrated Flux Nebula, or IFN.

have tried and failed to capture IFN in the past so here is another effort. Just shy of 10 hours of integration - long for me with my tree situation, but still way too short for IFN. I have finally gotten an image of an IFN - even if it is not a very good one!

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Messier 13 - The Great Hercule Cluster  - 8.5 hours in LRGB - Super Sharp!
Patrick A. Cosgrove Patrick A. Cosgrove

Messier 13 - The Great Hercule Cluster - 8.5 hours in LRGB - Super Sharp!

Messier 13 - the Great Hercules Cluster - is one of the finest examples of a Globular Cluster that can be found in our skies. It consists of a giant ball of 100,000-500,00 stars packed into an area 145 light-years across. M13 can be found between 22,000 and 25,000 light-years away in the constellation of Hercules.

This is a 5.6 8.5 hour integration in LRGB using my Astro-Physics 130mm scope the ZWO ASI2600MM-Pro camera. This is the fourth time I have shot this target and this one is clearly my best - displaying a remarkable sharpness in detail.

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