Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  IC 5070  ·  IC 5076  ·  NGC 6989  ·  Pelican Nebula  ·  The star 55Cyg  ·  The star 56Cyg  ·  The star 57Cyg
Almost the North America Nebula - first (bad) attempt at narrowband, Andrew_B
Almost the North America Nebula - first (bad) attempt at narrowband
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Almost the North America Nebula - first (bad) attempt at narrowband

Almost the North America Nebula - first (bad) attempt at narrowband, Andrew_B
Almost the North America Nebula - first (bad) attempt at narrowband
Powered byPixInsight

Almost the North America Nebula - first (bad) attempt at narrowband

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Description

This image of (almost) the North America and Pelican nebulae in H-alpha was my first ever attempt at narrowband as well as the first long exposure taken with the Zenithstar 61, and was the end result of a recent imaging session best summed up as a catalogue of errors.

I managed to capture 60 one minute subs but the focus is slightly off and it looks like there was a tracking issue. The bigger and more obvious problem is that I missed the North America nebula almost entirely, although I was fortunate to capture enough of the Pelican Nebula to let me see the H-alpha filter in action despite those issues. The experience did at least teach me some important lessons about not biting off more that you can chew by trying to do too many new things at once in challenging conditions and with too little time.

Taking a first long exposure image through a telescope is enough of a challenge without adding narrowband into the mix, and new hardware and methods are best tried out in the comfort of one's own garden rather than out in the field on a freezing cold Yorkshire moor in a gale.

The image is probably better than it deserves to be in the circumstances and I'm happy with the end result even though it's very poor by Astrobin standards. The Baader 7nm H-alpha filter really impressed me with the amount of detail and contrast I could pull out of the data from such a short integration time using an f5.9 scope and a stock X-T100. Even the poor sky quality and the rapidly approaching dawn didn't have as much impact as I would have expected. It's a promising start and I can't wait to see what it can do once I've got the hang of using it properly.

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Almost the North America Nebula - first (bad) attempt at narrowband, Andrew_B