Wednesday, December 07, 2016

aimed at Thor's Helmet (Halifax)

Faint!

The BGO robot imaged Thor's Helmet aka NGC 2359 for me. An emission nebula in Canis Major. One of the RASC Finest NGCs. The south wing is bright; the north wing is very faint. SkyTools shows another wing flying off to the east. I can barely see this.

RASC Finest emission nebula NGC 2359 luminance

Luminance only, 60 seconds subexposures, 10 stacked shots. FITS Liberator, Paint.NET. North is up; east is left.

I wonder if I need to go back and do longer exposures... I also found it included in an O-III filter list in SkyTools. Yeah. I should get more data.

There are problems in the top-right corner of the frame.

Again, this is unfortunate. There's a triple star system, BRT 2664, north-west of the nebula. Tight stars. But with the blurry collimation issue, the three stars merge together.

§

Tried again on 29 Jan '17. And took O-III data!

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