Heart Nebula (IC 1805) - 2021.12.13 (Vroobel)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: HD14328 · HD14552 · HD14558 · HD14794 · HD14817 · HD15069 · HD15238 · HD15239 · HD15250 · HD15382 · HD15522 · HD15557 · HD15558 · HD15570 · HD15629 · HD15785 · HD15851 · HD16183 · HD16410 · HD16429 · HD16506 · HD16626 · HD236966 · HD236989 · IC 1795 · IC 1805 · IC 1824 · LBN 645 · LBN 646 · LBN 647 · And 27 more.

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Heart Nebula (IC 1805) - 2021.12.13

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Heart Nebula (IC 1805) - 2021.12.13

This is my completely new approach to astrophotography: high class APO refractor instead of the budget Newtonian OTA.

The 10" Newtonian OTA weighs 17kg that is very much for the EQ fork mount that has significant backlash in the Dec axis, as it brings big inertia. Thus a small 4" 102/715 EDT triplet APO that weights 1/3 of the Newton must mean a change. And indeed, I tried 600s exposures and I have to say it's not impossible...

I chose this composition just for comparison with the previous picture performed with the 10" 1270mm reflektor.

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Status	Advanced success
Started	...
Astrometry.net job	6741397
PixInsight job	64ZOCNUCMVW3O936SHIX8C3STYFXRGFQ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h32m42s.30
RA (top/left)	02h21m56s.69
RA (top/right)	02h43m51s.79
RA (bottom/right)	02h44m07s.98
RA (bottom/left)	02h20m53s.71

Dec (center)	+61°20′59″.2
Dec (top/left)	+60°23′05″.6
Dec (top/right)	+60°27′14″.8
Dec (bottom/right)	+62°15′31″.4
Dec (bottom/left)	+62°11′13″.5

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Heart Nebula (IC 1805) - 2021.12.13

Heart Nebula (IC 1805) - 2021.12.13

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Heart Nebula (IC 1805) - 2021.12.13

Heart Nebula (IC 1805) - 2021.12.13

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