NGC 7000 July 2009 version 3 (Final) (Stephen Migol)

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NGC 7000 July 2009 version 3 (Final)

I finally figured out what setting DSS needed to align properly in the upper right corner of the star field. It required forcing bilinear alignment and allowing it to grab a lot of stars. For this stack, I allowed it to align on about 8,000 stars. This ensured that some alignment stars would be chosen in the relatively sparse upper right section of the frame.

For this final revision, I added another collection of lights covering July 21, 23, and 24, 2009. The total number of lights now stands at 19 lights of 8 minutes at 800 ISO. Since in-camera noise reduction was used, I only stacked with flats in DSS.

Note the framing differences compared with the other version as I brought more lights to the stack and had DSS set for intersection mode.

Referentiation Matrix (Gnomonic projection = Matrix * Coords[x,y]):

+0.000004155445 +0.002684455070 -2.671486939295

-0.002686453312 +0.000001987137 +4.618711235374

+0.000000000000 +0.000000000000 +1.000000000000

Resolution ........ 9.668 arcsec/pix

Rotation .......... -90.044 deg

Focal ............. 115.21 mm

Pixel size ........ 5.40 um

Field of view ..... 9d 14' 16.7" x 5d 19' 50.3"

Image center ...... RA: 21 01 16.810 Dec: +44 23 10.62

Image bounds:

top-left ....... RA: 20 45 04.412 Dec: +48 55 26.54

top-right ...... RA: 20 47 30.751 Dec: +39 43 21.88

bottom-left .... RA: 21 17 24.092 Dec: +48 55 43.34

bottom-right ... RA: 21 15 07.355 Dec: +39 43 34.00

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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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Astrometry.net job	n/a
PixInsight job	n/a
PixInsight queue size	n/a
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NGC 7000 July 2009 version 3 (Final)

NGC 7000 July 2009 version 3 (Final)

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NGC 7000 July 2009 version 3 (Final)

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