M8 -- Collimation Test -- Luminance (Michael Sherick)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: 9 Sgr · B296 · LBN 25 · Lagoon Nebula · M 8 · NGC 6523 · NGC 6526 · NGC 6530 · The star 9 Sgr

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M8 -- Collimation Test -- Luminance

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M8 -- Collimation Test -- Luminance

The screen photo shows the final collimation of the 24" RC optics. I used a laser collimator for the initial alignment of the optical train. I then used CCD Inspector in its de-focused collimation mode, which provides for real-time adjustments. Shown is the de-focused star using a 2 second exposure binned 3x3, with an accuracy of about 1.1 arc secs. It requires fairly stable seeing conditions to get a good collimation using this method. Each time I do a new collimation, I also need to redo the TPoint Model.

This image of M8 "The Lagoon Nebula", is a test, after re-collimating the 24" RC. I plan on making some final tweaks to the collimation, then acquire data for an upcoming LRGB image. Thus far, I am encouraged by the improved collimation to the RC optics.

Final
Original
B

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Status	Advanced success
Started	...
Astrometry.net job	5804359
PixInsight job	GXECWYLMCHMSF9TR250PI0R33YHTNHIW
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	18h03m55s.748
RA (top/left)	18h04m59s.495
RA (top/right)	18h02m52s.645
RA (bottom/right)	18h02m51s.986
RA (bottom/left)	18h04m59s.289

Dec (center)	-24°21′25″.99
Dec (top/left)	-24°08′17″.15
Dec (top/right)	-24°08′10″.76
Dec (bottom/right)	-24°34′34″.93
Dec (bottom/left)	-24°34′41″.79

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M8 -- Collimation Test -- Luminance

M8 -- Collimation Test -- Luminance

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M8 -- Collimation Test -- Luminance

M8 -- Collimation Test -- Luminance

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