The Rosette Nebula (Caldwell 49)

AstroDinsk

3486999

Deep Sky

Jan 19th, 2023

1894

Resolution:: 2986x2977 px
File size:: 12506 KB

Photo description / processing

Experimental imaging during the first clear night with the new Antlia 3nm filters.

Technical information

Telescope/Lens: William Optics ZenithStar 81 / ZS81
Camera: ZWO ASI533MM Pro
Mount: Sky-Watcher HEQ5 Pro
Guide Scope: William Optics UniGuide 32
Guide Camera: ZWO ASI290MM Mini
Accessories: William Optics 0.8x Flattener/Reducer APO
Software: Pixinsight

Location: Станица Динская, Россия

Light pollution

Orange, Bortle 6 zone

Date taken: Jan 12th, 2023

Exposure

1 × 600″ · ISO/Gain: 100 · Antlia 3nm Narrowband H-alpha 1.25" · Jan 12th, 2023
1 × 600″ · ISO/Gain: 100 · Antlia 3nm Narrowband Oxygen III 1.25" · Jan 12th, 2023
1 × 600″ · ISO/Gain: 100 · Antlia 3nm Narrowband Sulfur II 1.25" · Jan 12th, 2023

Total exposure: 30 m

Comments

Oleg Novoselov

Is this exactly one frame per image?

Jan 20th, 2023

AstroDinskReply to Oleg Novoselov

Yes, the stars are even a bit trailed there—my mount couldn't handle the 600-second exposure, I need to adjust it. But the filters performed really nicely.

Jan 20th, 2023