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Bubble Nebula


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About this observation
David Swan
Time of observation
10/08/2017 - 22:51
Bubble Nebula, NGC 7635
Observing location
Tynemouth, UK
Scope: 200mm SCT at f/6.3
Camera: ASI178MM. Baader UV/IR cut
Software: Firecapture and DeepSkyStacker
100 x 5s subs
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Midpoint of capture 21:51 UT, 22:51 BST

This evening I had the 16bit box ticked in Firecapture. Wow, what a difference! The computer often crashes when stacking though.

* Correction: it is a 14bit output from the camera


dawson's picture


Impressive amount of data given this is just 8 minutes with a CMOS sensor. Are you going to add more data to it? Why did you only go for 5 second exposures and not longer?

djswan2002's picture

Hello - thanks. Yes, I seem to remember the wind was gusting that evening in my yard, so I decided to do much shorter exposures than I am able to do. This meant of course that I could just discard subs that were affected by movement of the rig. I do have RGB filters, so I must add colour to luminosity when I have the time! David

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