Flaming Star Nebula in H-a narrowband (IC405 , SH 2-229, Caldwell 31) (Michele Vonci)

Celestial hemisphere: Northern · Constellation: Auriga (Aur) · Contains: Flaming Star Nebula · IC 405

Flaming Star Nebula in H-a narrowband (IC405 , SH 2-229, Caldwell 31), Michele Vonci

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Flaming Star Nebula in H-a narrowband (IC405 , SH 2-229, Caldwell 31)

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Flaming Star Nebula in H-a narrowband (IC405 , SH 2-229, Caldwell 31)

My series of monochrome H-a narrowband emission nebulae keeps going on...here's the Flaming Star Nebula. Only a couple of hours of total exposure before it disappeared behind a wall. Recently I had to reset my laptop and couldn't get APT and PHD2 to dither at all. Also, despite having freshly collimated the telescope last Saturday, I keep getting these "hollow" stars, specially on the brightest ones. I must have some flexure of the optical train; the ZWO ASI 1600 camera + filter wheel + coma corrector is quite of a heavy combination for the standard focuser of my Newtonian telescope and what it looks collimated through a Cheshire eyepiece might not be so with the whole camera installed. Also I need to tackle that residual coma in the corners...I never had a problem when I used the coma corrector with a canon 600D DSLR; with the ZWO ASI 1600 the back focus must be slightly off and that causes the residual coma.

Fast Newtonians
Cloudy Nights
UK Astro-Imaging
Suburban Astrophotography
Imagers of Italy

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Astrometry.net job	5256405
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Flaming Star Nebula in H-a narrowband (IC405 , SH 2-229, Caldwell 31)

Flaming Star Nebula in H-a narrowband (IC405 , SH 2-229, Caldwell 31)

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Flaming Star Nebula in H-a narrowband (IC405 , SH 2-229, Caldwell 31)

Flaming Star Nebula in H-a narrowband (IC405 , SH 2-229, Caldwell 31)

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