Veil nebula HOO mosaic (David Koslicki)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: 52 Cyg · HD197839 · HD198198 · HD198330 · HD198482 · HD198550 · HD198626 · HD198627 · HD198976 · HD199055 · HD199102 · HD199252 · HD199291 · HD335010 · HD335013 · HD335028 · HD335030 · HD335031 · HD335032 · HD335035 · HD335042 · HD335043 · HD335045 · HD335055 · HD335069 · HD335070 · HD335072 · HD335118 · HD335119 · HD335123 · And 94 more.

Veil nebula HOO mosaic

This one was really tricky to capture: it was my first time doing a mosaic with the SX-46 in narrowband and I learned a lot! For one thing, the percent overlap of the frames needs to be much bigger than what I have been using with my OSC CMOS. Even with every conceivable combination of stacking parameters, I couldn't completely get rid of the mosaic overlap artifacts in one direction (where the percent overlap was something like 2-5%). It was much easier to deal with in the other direction where the overlap was more like 20%. This is a 2x2 mosaic plus one extra frame right in the middle of the veil, trying to minimize the overlap artifacts.

I also can't wait until my new mount arrives: since I'm imaging at the edge of the CGX weight limit, I've been encountering a whole host of issues: failed flips, inability to dither in DEC, GOTOs causing gears to skip/slip. etc.

All this and more made this image a 3 week project. But I compared this image to my Veil Nebula from last year, and the improvement alone made it worth it!

Narrowband imaging
The refractors!

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Status	Advanced success
Started	...
Astrometry.net job	6075877
PixInsight job	JO31GWEGY1576KKIWBR4PS0XNJFMP1TF
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h51m32s.15
RA (top/left)	20h58m39s.87
RA (top/right)	20h45m12s.23
RA (bottom/right)	20h44m33s.38
RA (bottom/left)	20h57m39s.77

Dec (center)	+30°41′03″.7
Dec (top/left)	+32°05′29″.7
Dec (top/right)	+32°16′08″.2
Dec (bottom/right)	+29°14′59″.9
Dec (bottom/left)	+29°04′55″.9

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Veil nebula HOO mosaic

Veil nebula HOO mosaic

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Image Index:

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Veil nebula HOO mosaic

Veil nebula HOO mosaic

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Acquisition details

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