With just over an hour of clear skies available I used an Altair 70mm Starwave triplet refractor fitted with a 0.8 x FR to image M13 and NGC 6823 in RGB and red (converted to greyscale). For M13 15 x 60s subs of each channel were captured and the data integrated and processed in Pixinsight and Adobe Photoshop 2024 to produce the colour image with a 45min total exposure. For NGC 6823 just 5 x 240s subs (20 mins in total) were captured before the clouds stopped play. These were integrated in DSS and processed in Pixinsight/Adobe 2024 converting the red to greyscale.
Click on an image to get a closer view
M13 is known as the "Great globular cluster" in Hercules and is one of the finest globular clusters visible from the UK comprising ~ 300,00 stars some 25,000 LY from Earth. Also captured in the same image is the small galaxy visible to the bottom right which is NGC 6207 (mag 12) lying ~ 30 million light-years from Earth.
M13
NGC 6823 is an open star cluster in Vulpecula which lies about 6000 LY away and is surrounded by a reflection nebula with the emission nebula NGC 6820 also close by.
NGC 6823
Chris Bowden
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