
CENTRAL CYGNUS
IC 1318 & NGC 6888 • Widefield region • Cygnus • Approx. 4800 light-years from Earth
🔭
Svbony SV535
📷
ZWO 2600MC Pro
🌃
Bortle 8
⏱️
33 hours
🗓️
Jul – Aug 2026

Overview
Central Cygnus is one of the richest regions of the Milky Way for wide field astrophotography. It’s packed with glowing hydrogen clouds, dark dust lanes, and dense fields of stars.
The entire area lies along one of the brightest stretches of the Milky Way. At this scale, the individual nebulae begin to merge into a vast network of glowing gas and dust stretching across the constellation of Cygnus.
This image includes the nebula IC 1318, together with the much smaller Crescent Nebula, NGC 6888, visible near the centre of the frame.
Background
I’ve been keen to get a nice deep image using my Svbony SV535 telescope. The summer skies is full of sweeping vistas, and I zeroed in on Cygnus, which is particularly target-rich because of its location within the Milky Way. I figured it was the perfect region to make the most of my telescope’s extremely wide focal length of 105mm.
As ever, I used my faithful ZWO ASI 2600MC Pro camera. It’s OSC rather than mono, but I use three filters — Optolong L-Ultimate (Ha/OIII); Askar E2 (SII/OIII); and Optolong L-Quad Enhance (for RGB stars) — which allows me to create SHO images with broadband stars.
The entire exposure time is 33 hours, of which the lion’s share is taken with the Askar E2, which totalled 21.5 hours. This was to help the SII shine through.
Close-ups
Science

The Crescent Nebula (NGC 6888) is probably the stand-out object in my image. It’s a vast bubble of gas about 25 light years across, created by the powerful stellar winds of the massive Wolf Rayet star WR 136. The star previously shed material during an earlier stage of its life, and its much faster present day wind is now crashing into that older gas, sculpting the nebula’s intricate shell and filaments. The turqouise colour in my image comes from glowing oxygen.

IC 1311 is a faint open star cluster. It’s a bit of an oddity because normally star clusters drift apart, but its members are quite old (probably 1 to 2 billion years old). For some reason, they’ve stuck together.
When I was studying this particular close-up, I noticed a tiny, faint blue-green blob between IC 1311 and the top of the frame. I did a bit of digging and realised it’s Patchick 6, a.k.a. DSH J2009.6+4114, which is probably a planetary nebula.

Sadr is the brightest star in my image. It’s much larger and more luminous than our own Sun. It’s around 1800 light-years from us, so a lot closer than the nebulosity (which is around 5000 light-years distant). So, Sadr isn’t actually embedded within the nebulosity, but just looks like it because of our line of sight.

Sh2-104 is a bubble of ionised hydrogen crarved out by a hot, young, high-mass star. The nebula itself is surrounded by a ring of gas and dust with some dense clumps that may go on to form new stars.

The Butterfly Nebula forms part of the huge IC 1318 complex surrounding Sadr. Its two glowing lobes are rich in ionised hydrogen, while the striking dark band between them is a dense cloud of interstellar dust known as LDN 889. Rather than being an empty gap, this dust is blocking the light from the bright nebula behind it, creating the butterfly shaped appearance.

I’ve imaged the Butterfly Nebula before using my Askar 130PHQ telescope:

The Tulip Nebula (Sh2-101) is a gas cloud that’s being excited by the ultraviolet radiation from nearby stars. It’s a target I’d like to return to with my Askar 130PHQ.

The Soap Bubble Nebula (PN G75.5+1.7) was only discovered in 2008. It’s an extremely faint and remarkably spherical planetary nebula. It’s thought to be the expanding outer shell of a dying Sun like star, roughly 5 light-years across and around 4000 light years away.

WR 134 is a Wolf–Rayet star in the constellation Cygnus, surrounded by a faint bubble of ionised gas sculpted by powerful stellar winds. The star, about 6000 light-years away in the constellation Cygnus, is the exposed core of a massive sun shining 400,000 times brighter than our own.

I’ve imaged WR 134 before using my Askar 130PHQ:

M29 is a young open cluster. It’s compact but bright, so amateurs can see it visually even through a small telescope. M29 is sometimes nicknamed the Cooling Tower Cluster.

Kit list
This is the equipment I used to capture the image.
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Telescope: Svbony SV535
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Camera: ZWO ASI 2600MC Pro
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Mount: StellarDrive X 6R PRO
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Rebuilt into a StellarDrive X 6R PRO by DarkFrame Optics.

Guidescope: Svbony SV165 Guidescope
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Guidecam: ZWO ASI 120MM Mini
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Control: ASIAIR Mini
Review coming soon…
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Filter: Optolong L-Quad Enhance
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Filter: Optolong L-Ultimate
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Filter: Askar E2
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Processing walkthrough
Example source data
Here are example single subframes and freshly integrated stacks, just with simple stretches applied.






Seestar S50 image
This photo of the Crescent Nebula (near the centre of my main image) was taken using my Seestar S50 telescope.

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