Central Cygnus

CENTRAL CYGNUS

IC 1318 & NGC 6888 • Widefield region • Cygnus • Approx. 4800 light-years from Earth


🗓️
Jul – Aug 2026

Overview

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.

Imaging details

Date

16 July – 3 August 2026

Location

Bristol, UK (Bortle 8)

Telescope

Svbony SV535 105mm f/2.8 Astrograph

Camera

ZWO ASI 2600MC Pro

Mount

StellarDrive X 6R PRO

Guiding

Svbony SV165 + ZWO ASI 120MM Mini

Control

ASIAIR Mini

Software

PixInsight, Lightroom

Image by

Lee Pullen

Filter

Channels

Exposure

Optolong L-Quad Enhance

RGB (stars)

180 × 1-minute (3 hours)

Optolong L-Ultimate

Hα / OIII

170 × 3-minutes (8.5 hours)

Askar Colour Magic E2

SII / OIII

258 × 5-minutes (21.5 hours)

33 hours

Imaging details

Date
16 July – 3 August 2026

Location
Bristol, UK (Bortle 8)

Image by
Lee Pullen

Filters

Optolong L-Quad Enhance
RGB (stars)
180 × 1-minute (3 hours

Optolong L-Ultimate
Hα / OIII
170 × 3-minutes (8.5 hours)

Askar Colour Magic E2
SII / OIII
258 × 5-minutes (21.5 hours)

Total exposure: 33 hours

Kit list

This is the equipment I used to capture the image.
Affiliate links help support the site at no extra cost to you.

Telescope: Svbony SV535
Read my review

Buy from Svbony
Use the code Lee20 for a $20 discount!

Sky-Watcher EQ6-R Pro equatorial mount with StellarDrive X 6R Pro upgrade set up for astrophotography

Mount: StellarDrive X 6R PRO
Read my review
Buy EQ6-R PRO from Astroshop.eu
Buy EQ6-R PRO from High Point Scientific
Rebuilt into a StellarDrive X 6R PRO by DarkFrame Optics.

Guidescope: Svbony SV165 Guidescope
Buy from Svbony

ZWO ASIAIR Mini

Control: ASIAIR Mini
Review coming soon…
Buy from Astroshop.eu
Buy from High Point Scientific

Processing walkthrough

https://youtu.be/Q9KxcCDo_ko
Example astrophotography image promoting one-to-one online masterclasses

Example source data

Here are example single subframes and freshly integrated stacks, just with simple stretches applied.

Optolong L-Quad single subframe.
Optolong L-Quad integrated stack.
Optolong L-Ultimate single subframe.
Optolong L-Ultimate integrated stack.
Askar E2 single subframe.
Askar E2 integrated stack.

Askar FRA400 image

Imaging details

Date

July 2022

Location

Bristol, UK (Bortle 8)

Telescope

Askar FRA400 f/5.6 Quintuplet APO Astrograph

Camera

ZWO ASI 2600MC Pro

Mount

Orion Sirius EQ-G

Guiding

William Optics 32mm; ZWO ASI 120MM Mini

Control

ASIAIR Plus

Software

PixInsight, Lightroom

Image by

Lee Pullen

Filter

Channels

Exposure

Optolong L-eXtreme

Hα / OIII

750 × 2-minutes

25 hours

Askar FRA400 image

Imaging details

Date
July 2022


Location
Bristol, UK (Bortle 8)


Telescope
Askar FRA400

Camera
ZWO ASI 2600MC Pro

Mount
Orion Sirius EQ-G

Guiding
WO 32mm; ZWO ASI 120MM Mini

Control
ASIAIR Plus

Software
PixInsight, Lightroom

Image by
Lee Pullen

Filters

Optolong L-eXtreme
Hα / OIII

750 × 2-minutes

Total exposure: 25 hours

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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