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M15 with PN Pease 1
SPX350 F4.5, ATIK314L+, Baader RGB.
A quick image to test my upgraded ATK-16HR to a 314L+ with the old sensor in a new camera body now works as good as new. The old CCD had the sensor not flat and had bright lines and vertical lines on the narrowband images but this is now gone with the old sensor in a new body now collimates much better.
M15 has a PN called Pease1 daimeter 1" near the core discovered in 1928 by Francis Pease at mag 15.5.
In RGB (seeing mediocre) it appears blue but when taken back in 2008 using the Mintron and Ha 12nm added to red in HaRGB it shines a pink colour with Astronomik filters. In the 2008 Mintron image taken back in the UK the collimation was poor but seeing good.
ATIK 314L+
RGB=12x3min each.
Thanks, John.
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