Caroline's Rose Cluster NGC 7789

Posted: Aug 25th, 2026

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NGC

IC

HD

Technical Info

Telescope/Lens: Askar 71F

Camera: ZWO ASI2600MM PRO

Mount: JUWEI 14

Guide Scope: ToupTek GS-200 AR

Guide Camera: ZWO ASI662MC

Software: Siril, Lightroom

Accessories: CAA, EAF, EFW, ASIAIR MINI, Askar Reducer x 0.75, Gemini PowerBox

Exposure:

11 x 120" ISO/Gain: 100 - Optolong L

5 x 120" ISO/Gain: 100 - Optolong R

5 x 120" ISO/Gain: 100 - Optolong G

5 x 120" ISO/Gain: 100 - Optolong B

17 x 120" ISO/Gain: 100 - Antlia EDGE Ha 4.5 nm

Yellow, Bortle 5 zone:

Samara, Russia

Aug 22nd, 2026

1 h 26 m

3

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Resolution: 6181x3477 px

Scale: 18134 KB

233

I decided to check what's in Ha and noticed a planetary nebula at the left edge of the frame, slightly above the bright yellow star. I shot a bit of Ha to see what's what, and as a bonus it turned out pretty good. The cluster was discovered by Caroline Herschel in 1783, so the name isn't just another folk creation. The small nebula, by the way, is Abell 82 (PK 114-04.1).

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