Virgo Cluster / Markarian Chain Region (Geof Lewis)

Celestial hemisphere: Northern · Constellation: Virgo (Vir) · Contains: 20 Vir · M 100 · M 84 · M 86 · M 87 · M 88 · M 89 · M 91 · M 99 · NGC 4302 · NGC 4321 · NGC 4374 · NGC 4406 · NGC 4438 · NGC 4486 · NGC 4501 · NGC 4548 · NGC 4552 · PK275+72.1 · Virgo Galaxy

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Virgo Cluster / Markarian Chain Region

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Virgo Cluster / Markarian Chain Region

This is a test going back to use my old Canon 600D paired with the 1990s manual Nikkor ED180mm lens. The lens was stopped at F4 and the camera shooting at ISO1600. Guiding was using the Lodestar X2 via the OAG port of my QSI camera attached to the C14, so yes a C14 guiding a 180mm camera lens.

I had forgotten that the astro-modified camera paired with this lens produces red halos around all the stars, so in processing I split out the LRGB components, reduced star sizes in the red channel before recombining the RGB and layering a separately processed synthetic luminance.

The final image is not my greatest effort, but I like the scale that this camera+lens combo offers, so I may try it again on some other wide field targets.

It may also offer me a quick capture option for some of the low Messier open cluster targets in the next month or so, if I can get onto them, not least because the camera being piggy backed on my rig, gets slightly higher above the observatory wall.

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Description: Used levels to lower the black point, for a darker background

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Status	Advanced success
Started	...
Astrometry.net job	3500635
PixInsight job	HE64GI045QFY2XNFMOE6SX95SNEI3KA5
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	12h27m08s.69
RA (top/left)	12h37m36s.67
RA (top/right)	12h18m21s.40
RA (bottom/right)	12h16m56s.96
RA (bottom/left)	12h35m39s.50

Dec (center)	+13°18′02″.6
Dec (top/left)	+16°39′19″.4
Dec (top/right)	+16°55′43″.10
Dec (bottom/right)	+09°55′06″.6
Dec (bottom/left)	+09°39′10″.7

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Virgo Cluster / Markarian Chain Region

Virgo Cluster / Markarian Chain Region

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Virgo Cluster / Markarian Chain Region

Virgo Cluster / Markarian Chain Region

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