M24 - Sagittarius Star Cloud (klaussius)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: 13 Sgr) · 13 mu. Sgr · 14 Sgr · 15 Sgr · 16 Sgr · 17 Sgr · 21 Sgr · Al Thalimain · Alnam (μ Sgr · B301 · B304 · B307 · B308 · B92 · B93 · Checkmark Nebula · IC 1283 · IC 1284 · IC 4701 · IC 4715 · LBN 42 · LBN 43 · LBN 46 · LBN 47 · LBN 48 · LBN 49 · LBN 51 · LBN 52 · LBN 53 · LBN 55 · And 72 more.

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M24 - Sagittarius Star Cloud

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M24 - Sagittarius Star Cloud

This is first light with a brand new Askar FMA 180. It was a hastily taken shot, under quite bad conditions (including haze and smoke).

The system has some backfocus issues it seems, but overall it turned out quite nice, even though it has a bit more CA than I expected for an APO triplet.

About M24 itself, it's a bright patch of the milky way that looks like a cluster but is instead just a tunnel among the dark dust, visible around M24 in the shot. The stars that would be attenuated by dust are instead brightly visible, causing this pseudo-cluster effect.

Near the edge, barely in the frame, we have the Omega (or Swan) nebula photobombing.

I was limited to 8s shots under my sky conditions. II expect this lens would perform considerably better on dark skies where longer exposures become viable.

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Unknown

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.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Status	Advanced success
Started	...
Astrometry.net job	6369702
PixInsight job	32NTTQ34VUKNZ3E3N1K0GE466JZ0M71F
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	18h17m17s.62
RA (top/left)	18h27m08s.20
RA (top/right)	18h24m05s.20
RA (bottom/right)	18h07m50s.65
RA (bottom/left)	18h10m10s.61

Dec (center)	-19°36′27″.8
Dec (top/left)	-22°52′57″.9
Dec (top/right)	-15°57′33″.7
Dec (bottom/right)	-16°18′18″.8
Dec (bottom/left)	-23°14′45″.8

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M24 - Sagittarius Star Cloud

M24 - Sagittarius Star Cloud

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M24 - Sagittarius Star Cloud

M24 - Sagittarius Star Cloud

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