Melotte 15 Area, Ha (Stephen Garretson)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: IC 1805 · Sh2-190

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Melotte 15 Area, Ha

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Melotte 15 Area, Ha

New setup. Learning to use the 8RC and FLI Microline 16200. I am unwilling to run the RC at its native f/8, so I installed my AP CCDT67, knowing it will throw a 29mm image circle, mismatched to the 34.5mm diagonal of the 16200. But imaging time is the most critical variable for me, so I am cropping out the center to use, ~ 40%. Using the formula on AP's site I figure I am runnning at about f/5.8 and an effective focal length of ~1200mm. This setup is a bridge to a fast Modified Corrected Dall-Kirkham I have my sights on, shooting for next year.

That said... Pretty happy with how this is shaping up as the Ha component for SHO. I want 6-8 hours per channel. With the MW so low these days and a relatively short window for nebulae imaging, this may take a while given the recent and predicted weather, but if I can snag a couple hours here and there...I'm good...well, I'm at least not completely dejected!

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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	2552061
PixInsight job	DMDUHSQ5LGH3ZWOR3OQUYRQN5XQ6GC2W
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	02h34m30s.24
RA (top/left)	02h30m57s.27
RA (top/right)	02h38m07s.59
RA (bottom/right)	02h38m07s.81
RA (bottom/left)	02h30m47s.83

Dec (center)	+61°27′11″.8
Dec (top/left)	+61°06′09″.2
Dec (top/right)	+61°06′54″.2
Dec (bottom/right)	+61°47′52″.0
Dec (bottom/left)	+61°47′07″.2

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Melotte 15 Area, Ha

Melotte 15 Area, Ha

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Melotte 15 Area, Ha

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