M27 - The Dumbbell Nebula (Crop)

Buzzard

36891

Deep Sky

Jan 12th, 2026

932

NGC 6853

Resolution:: 1803x1804 px
File size:: 15594 KB

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Photo description / processing

During the short summer nights, I had to photograph the brightest objects. I tried to capture good "ears" on the nebula, but even with stretching, they turned out faint. I used a short exposure to avoid overexposing the center.

Technical information

Telescope/Lens: Sky-Watcher 200PDS
Camera: SVBONY SV605CC
Mount: Juwei 17-100 Mount
Guide Scope: SVBONY SV106
Guide Camera: TOUPTEK GPM 462
Accessories: SharpStar 1x MPCC
Software: Siril, GraXpert, Starnet++, Cosmic Clarity, GIMP

Location: Chekhov, Russia

Light pollution

Orange, Bortle 6 zone

Date taken: Jul 26th, 2025

Exposure

951 × 40″ · ISO/Gain: 101 · SVBONY UHC · Jul 26th, 2025

Total exposure: 10 h 34 m

Comments

KonFuz

The stars are oversharpened and there is too much noise reduction.

Jan 15th, 2026

BuzzardReply to KonFuz

Thank you for the feedback! Do you mean the stars look a bit faint?

Jan 15th, 2026

KonFuzReply to Buzzard

As I understand, you stretched them using arcsin or GHS. In the first case, you pulled the slider too far; in the second, you overstretched the first and second sliders, resulting in flat centers and bloated stars.

Jan 16th, 2026

BuzzardReply to KonFuz

Got it, thanks for the answer! I didn't stretch it too much in Siril (tried the VeraLux Hypermetric stretch). I guess I overdid it later in GIMP on the star layer.

Jan 16th, 2026