View allAll Photos Tagged iOptron
Cygnus
Was a bit late for me to set up all my gear and the Moon is still pretty bright, so I just set up my iOptron Skyguider with my 700Da and a Ha filter. Very short imaging session with the Sigma 105mm macro lens, only 40 mins (clouds!) of 120s lights and 15 darkframes. ISO was set to 1600, f2.8. The Cygnus area is quite amazing when it comes to Hydrogen emission nebulae... #northamericanebula #pelicannebula #butterflynebula ... all there. And plenty of other smaller/fainter objects.
#dso #dsophotography #astro #astrofotografia #astrofotografie #astrophotography #astronomy #astronomie #ngc7000 #ic5070 #ic1318 #night #nightsky #stars #sterne #ioptron #ioptronskyguiderpro #canon #sigma #backyardastronomy #backyardastrophotography #pfaffenhofen #astronomik #bayern #bavaria
Tracked long exposure of the overhead portion of the Milky Way in the area of the constellation Cygnus.
Nikon D7000
Rokinon 14mm f/2.8
iOptron SkyGuider Pro
2H 30M of 3 min exposures @ ISO 400
Shot at the Dark Sky Viewing Area near Erinsville, Ontario
Comet C/2022 E3 (ZTF) is seen in the early morning of December 26, 2022. The image is made of 72 twenty second exposures taken with a Canon 80D and a Canon 200 mm f/2.8L II lens. This image shows the rapidly developing ion tail. (ISO 800, f/3.5)
Optics : TEC 140 APO (980 mm F 7.0)
Filter : Baader Planetarium D-ERF 160 mm
Beloptik Telecentric 5x
Filter H alfa : Coronado PST
Filter H alfa : Solar Spectrum S.O. 1.5 0.5A
Camera : ZWO ASI 174 MM;
Equivalent Focal lenght : 4900 mm.
Mount : Ioptron CEM70G & Ioptron TriPier;
Software : FireCapture, AutoStakkert3, ImPPG, Adobe Photoshop
Casalecchio di Reno - Italia
44° 29’ 29” N
11° 14’ 58” E
Constelación en que se encuentra: Canes Venatici
Distancia: 25 millones de años luz
De SkySafari:
Messier 106 es una galaxia descubierta por Pierre Méchain en 1781 y posteriormente agregada al catálogo de Messier. Tiene forma de espiral y en los bordes tiene cúmulos de estrellas jóvenes muy brillantes, que le dan su color azulado. El centro amarillo está conformado por estrellas mucho más antiguas.
M106 se aleja de la Vía Láctea a unos 540 km/s. Desde la década del 50 se conoce que emite señales de radio y se cree que tiene un agujero negro super masivo en el centro con una masa de 40 millones de soles.
Datos de la imagen:
Exposure: 9hr 57min (199 x 3min)
Telescope: #Celestron #C925 #EdgeHD#
Camera: Camera: #ZWO #ASI2600MC Pro
Focal ratio: f10
Capturing software: #NINA
Filter: UV/IR
Mount: #iOptron #CEM60
Guiding: #ASI462MC with PHD2 and Stellarvue F60M3
Dithering: Yes
Calibration: 50 darks, 50 flat darks, 50 flats
Processing: #PixInsight
Date: 7-abr-2024 y 9-abr-2024,
Location: #Bogotá, #Colombia
M: iOptron EQ45-Pro
T: William Optics GTF81
C: ZWO ASI1600MC-Cooled
Filter: L-eNhance
G: None
GC: None
RAW16; SER Output Format
Temp: -20 DegC
Gain 139; Exp 0.025s [25ms]
Frames: 1010 Lights; 50 flats
80% Crop
Capture: SharpCap
Processed: PIPP; DSS; PS.
Sky: At sunrise, 3rdQ moon, calm, no cloud, good seeing.
The less photographed eastern limb, due to it being seen in the early morning, when most of us are tucked up nice and warm.
The Iris Nebula in Cepheus is a reflection nebula illuminated by its enveloped central star. This LRGB image was captured on the evenings of 2017-05-26 and 27 at Brooks Memorial State Park near Goldendale, WA. Telescope: William Optics ZenithStar 110mm. Camera: QSI 683wsg. Mount: iOptron iEQ45 Pro. Integration Time: 105 mins for Luminance and 85 mins each for RGB.
The Omega Nebula, also known as the Swan Nebula (Messier 17, M17) is located in the constellation Sagittarius. This is a nine minute stacked image taken in July 2015 using a Canon 6D and Celestron 6" telescope.
Barnard 33 in the constellation of Orion. Equipment used:
M: iOptron EQ45-Pro
T: WO GTF81
C: ZWO ASI1600MC Cool
G: 200mm Finder and PHD2
Gain: 300; RAW16; FITs
Temp: -2.6 DegC
Frames: 80 Lights; 6 Darks; 6 flats
Exp: 120s
No Crop
Capture: Sharpcap
Processed: DSS; PS & Gradient Exterminator.
M13, the Great Cluster in Hercules, teeters on the edge of naked eye visibility and appears in binoculars as a small, circular, hazy glow. It contains over 300,000 stars, and its luminosity is 300 thousand times the Sun.
Globular star clusters, unlike open star clusters such as the Pleiades, are tightly held together by gravity. Whereas open clusters break up after hundreds of millions of years, globular clusters remain intact after billions of years.
Equipment Used
26/06/2015 - LONDON
ALTAIR ASTRO RC 250TT
QHY9S MONO CCD
BAADER FILTERS
LRGB EACH AT 3 X 300s
IOPTRON CEM 60 MOUNT
Baader D-ERF,
TEC140 APO,
BEloptik Telecentric 5X,
Coronado PST H alpha filter,
Solar Spectrum SO 0,5 A H alpha filter,
Zwo ASI 174 MM,
Mount Ioptron CEM70-G
Ioptron Tripier
Nikon d810a
35mm
ISO 1600
f/1.8
Foreground: 10 x 15 seconds
Sky: 33 x 30 seconds
H-Alpha: 10 x 60 seconds
iOptron SkyTracker
This is a 53 shot panorama of the Milky Way setting over a small, wooded hill on a wheat farm at Jennapullin, 1.5 hours east of Perth in Western Australia.
The light pollution silhouetting the hill is from the nearby Wheatbelt town of Northam. To the left are the Large & Small Magellanic Clouds and on the right is the Cygnus region of the Milky Way, enhanced by a hydrogen alpha filter that isolates that part of the spectrum.
M33, a beautiful spiral galaxy in the constellation Triangulum. It's "only" about 2.8 million light-years away, making it the next nearest large spiral galaxy to us (just beyond M31, the Andromeda Galaxy), and part of the association of galaxies called the Local Group. Had a couple of nice clear, calm nights recently, though the moon is waxing past last quarter, and local lights add to the sky brightness.
Tech: 75 5-minute exposures, ASI294MC camera, Nikon 200-500mm f/5.6 lens, UV/IR cut filter, iOptron CEM25P mount, ASIAir controller, auto-guided, processed in Astro Pixel Processor and Lightroom.
My first Deep Sky Object (DSO) attempt using a Canon 6D Mark II (unmodified), a Canon 70-200mm f2.8 at 200mm, on an iOptron GEM 45 (that I bought on CloudyNights from Paleosol, thanks!!!). So much to learn, yet I'm amazed by my first attempt at DSO capture, first-time stacking, and first-time successfully polar-aligning and skewing with the iOptron GEM45. Stacked with Starry Skies and edited in Lightroom and Photoshop to bring out the colors.
image réalisée avec une ASI 2400mc pro et un filtre IDAS NBZ
monture ioptron GEM 28
takahashi FSQ 85 EDX avec correcteur 1.01
asiair plus
447 poses de 180s/-5°/bin 1
siril, pixinsight,photoshop.
"And the Sun is Eclipsed by the Moon"
First try at my image of totality from the August 21, 2017 total solar eclipse, which I observed in Glendo, Wyoming.
The camera was on an Ioptron Skyguider Pro mount polar aligned for tracking.
IC 1396 Elephant Trunk Nebula, star-forming HII region in Cepheus.
2x3 mosaic, Explore Scientific 102mm f/7 refractor, ZWO ASI294MC camera, dual narrow-band fillter (H-alpha and [O III]), iOptron CEM25P mount, ASIAir Pro controller, processed in Astro Pixel Processor and Lightroom.
Nikon d810a
35mm
ISO 2000
f/1.8
Foreground: 10 x 30 seconds
Sky: 43 x 30 seconds
iOptron Skytracker
This is a 53 shot panorama of the Milky Way rising above The Pinnacles Desert, 2 hours north of Perth in Western Australia.
It's one of the first panos I have taken with a new Tamron Di USD 35mm lens, reported to be one of the best 35mm prime lenses available. So far it
has proven to do a great job of minimising edge distortion, which is always a plus for astrophotography. At f/1.4 it's also super fast. A bonus is that
the hydrogen alpha filter I bought for my 85mm lens also fits this one which I used to incorporate Ha data into this image. I tried something different with my process on this panorama, stopping down the ISO to minimise noise while compensating by having the aperture almost wide open.
Prominent in this image is the Seagull Nebula on the far right, just above the horizon. Above that is the huge red Gum Nebula and a little to the left is the pink Carina Nebula. Near the centre of the image is the Large Magellanic Cloud while the Small Magellanic Cloud can be seen peaking inbetween the two large pinnacles. To the far left is the Rho Ophiuchi Cloud Complex just above the core. Some dark clouds can be seen just above the horizon which slowly moved their way towards the area throughout the night, completely clouding over the sky by about 3am.
Piccolomini
24 september 2021
San Romualdo (RA)
Celestron C9.25 - Ioptron ieQ30pro
QHY5III 185C - Barlow Televue 2x
180" film a 24fps
Acquisizione Firecapture 2.7
Elaborazione: Autostakkert3, Astrosurface, Paint Shop Pro2021
www.cfm2004.altervista.org/astrofotografia/luna-hires/pic...
Nikon d810a - 50mm - ISO 4000 - f/1.8
Foreground: 12 x 13 seconds
Sky: 28 x 20 seconds
iOptron SkyTracker
This is a 40 shot panorama of the setting Milky Way and Comet C/2023 A3 (Tsuchinshan–ATLAS) at Lake Clifton, 1 hour south of Perth in Western Australia. Venus can also be seen shining very brightly near Rho Ophiuchi and enveloped in the Zodiachal Light.
Those who have followed me for long enough might notice the new metal railings on the jetty/boardwalk. These are a recent edition that was unfortunately forced upon the local council after absent minded photographers climbed down onto the ground below during a recent aurora event and trampled some of the thrombolites which the area is famous for.
M101 In the constellation of Ursa Major.
M: iOptron EQ45-Pro
T: William Optics GTF81
C: ZWO ASI1600MC-Cooled
F: IDAS D2
G: PHD2
GC: OAG & ZWO ASI120mini
RAW16; FITs
Temp: +4 DegC
Gain 250;
40 x Exp 400s
Frames: 40 Lights; 20 Darks; 20 flats
100% Crop
Capture: SharpCap
Processed: APP; PS; Gradient Exterminator
Sky: Waning 60%, Calm, No cloud, Mild; fair seeing.
20.87 million light years distant.
Nikon D800 (modified to record hydrogen light), 200-500mm f/5.6 @500mm, composite of 20 exposures each 60 sec., f/9, ISO 6400, iOptron CEM25P drive, processed in Lightroom, combined in Starry Sky Stacker.
This is my first test with iOptron SkyTracker. Photo was done in NYC.
Light pollution in the New York City is crazy; by naked eyes you can see only some brightest stars (see for example my previous NYC photo on the Flickr). I don’t expect that will be able to get such details of the Orion Nebula.
Original idea was tested tracking of iOptron SkyTracker. For this photo I used Canon 60Da with Canon Telephoto Lens EF 200mm f2.8 L II USM. For 15 second with this lens and fixed tripod I got star tracks. So I decided for testing use exposure 15 second. For this exposure and with such light pollution (and 3 / 4 Moon near Orion) I choose small ISO-320.
Total number of shots was 204 (total time 51 min). I stacked images using DeepSkyStacker, and for post-processing used Photoshop. iOptron SkyTracker pretty much can handle Canon 60Da with 200mm lens and result not even expected for such extreme astrophotography conditions.
The ionized gases of nebula are represented here using the Hubble Palette for color images. Sulphur II, Hydrogen Alpha & Oxygen III produce light in the red, red-orange and green wavelengths respectively. Here they are spread more fully across the visible spectrum for color contrast purposes to Red,Green & Blue. The variety of intermediate colors indicate the presence of multiple gases, but also the broadening of the very narrow bands (7nm wide) of captured data into, say, the 350 nm wide visible spectrum we think of from Red to Violet.
William Optics Zenithstar 73 iii and 73a flattener, Ioptron CEM70NUC mount, Altair Tri-band filter, ASI2600MC Pro at -20C and ZWO focuser.
48 x 5 minute exposures (4 hours )
Gain 100, Offset 50, 50 dark frames, 50 flat fields and 50 dark flat frames.
Processed in Pixinsight, Photoshop and Topaz.
Imaged between 00:05 and 05:41 on the 29th of November 2022.
Poor seeing made guiding quite choppy.
At a distance of 3,000 light-years the NGC 1502 is an open star cluster of about 45 stars in #Camelopardalis.
Date: 10/02/2016
Location: #London (UK)
Altair #Astro RC 250TT
QHY9s Mono CCD
Chroma LRGB 3 x 300 seconds each filter
Iotpron CEM60 mount
● Object specifications:
► Designation: NGC 3726
► Other main object(s): Abell 1306, PGC 35783
► Object type: Galaxy
► Stellar coordinates (J2000.0):
-Ra: 11h 33m 20,15s.
-DEC: +47° 01′ 59.5″.
► Distance: ~71 MLy.
► Constellation: Ursa major.
► Magnitude: 11.20
● Gear:
► Telescope: SW 200/1000 F5
► Mount: IOptron CEM60-ec
► Camera: QHY294C
► Autoguiding: guidescope 50mm + ZWO asi
120mm
► Other optic(s): TS coma corrrector Maxfield 0.95X
► Filter(s): Optolong L-extreme 2" / Optolong L-pro 2"
● Softwares:
► Acquisition: Nina
► Autoguiding: PHD guiding 2
► Preprocessing: PixInsight
► Processing: PixInsight
● Data acquisition:
► total 11H05min
-Ha: 3H25min, 300s X 39, 05/03/2025
-RGB: 7H40min, 300s X 89, 02/03/2025 - 04/03/2025
Nikon d810a
85mm
ISO 4000
f/1.8
Foreground: 6 x 20 seconds
Sky: 23 x 20 seconds
iOptron SkyTracker
This is a 29 shot panorama of the Milky Way & comet C/2023 A3 (Tsuchinshan泡TLAS) setting above Sugarloaf Rock near Dunsborough, 3 hours south of Perth in Western Australia.
The comet was just visible to the naked eye (I had to look slightly away from it) but it was still quite bright in-camera. The airglow was pretty crazy too!
Via Lattea nel Sagittario
8 Agosto 2020
Località: Fontanelice (BO)
Ioptron ieQ30 - Obiettivo Canon 85mm chiuso a f/5
Canon 5D MarkII non modificata - 12 pose da 3 minuti - Iso 800
Elaborazione: MaximDL5, Paint Shop Pro 2020, plug-in Topaz e Nik.
www.cfm2004.altervista.org/astrofotografia/varie/vialatte...
Acquisition le 24 ,25 ,26 Mai 2020
160 x 300s soit 13h30
Acquisition avec NINA
nikon D610 stock
lunette TSQ71/347
Monture ioptron CEM120
traitement Pixinsight + CS7
Nikon d810a
50mm
ISO 6400
f/2.8
Foreground: 3 x 20 seconds
Sky: 9 x 30 seconds
iOptron SkyTracker
Hoya Red Intensifier filter
This is a 12 shot panorama of the Milky Way setting behind some wispy clouds at Wandering, 1.5 hours south east of Perth in Western Australia.
The cloud acted as a natural fog filter, diffusing the light of the stars and making them appear much larger while also enhancing the star's spectral colour.
Nikon d810a
50mm
ISO 3200
f/3.2
Foreground: 6 x 15 seconds
Sky: 25 x 30 seconds
H-Alpha: 8 x 60 seconds
iOptron SkyTracker
This is a 39 shot panorama of the Milky Way rising above a lone tree on a farm at Contine, 1.5 hours south east of Perth in Western Australia.
Prominent in this image are the Large & Small Magellanic Clouds to the right, small satellite galaxies of our own Milky Way. Just right of centre at the very top is the pink coloured Carina Nebula while just below that is the dark CoalSack Nebula with Crux (Southern Cross) to its immediate left.
I used an h-alpha filter to highlight the various red coloured hydrogen alpha emitting regions, most prominent in and around the core area on the left.
A wide field image of Centaurus A (C77 and NGC5128) taken at Waikari (Bortle 2) in Canterbury New Zealand over the night of 29 to 30 March 2025. The dust lane through the galaxy has led to it being called the Hamburger Galaxy. Visible also are the smaller surrounding galaxies down to 14th magnitude.
Centaurus A, in the constellation of Centaurus, is the fifth-brightest galaxy in the sky. Located 11 million light-years from earth and spanning over 60,000 light-years across, our view of Centaurus A is the result of a collision of two galaxies. The centre of the galaxy contains a massive black hole.
The galaxy was discovered in 1826 by Scottish astronomer James Dunlop from his home in Australia, and is only visible from the southern hemisphere and low northern latitudes.
In total 150 frames of 3 minutes each were taken between 9.00 pm and 5.15 am for a total of 7.5 hours of data. 132 frames were stacked for this image as the last frames were discarded as a thin layer of cloud came in.
ZWO ASI2600MC camera with EAF focuser, Askar FRA400 refractor on iOptron CEM40 mount. No guiding. Capture greatly helped by ZWO ASIair Pro which allowed me to monitor over WIFI while I was warm in the camper. Processed using Deep Sky Stacker, GraXpert, Siril, and Photoshop. Cropped slightly to give a field of view 3 degrees x 2 degrees.
Thank you for choosing this photo for Explore on April 1, 2025.
Thanks also to everyone that has viewed, faved, and commented on this image.
Took this image of Milky Way and a shooting star with Sony NEX-5 and Rokinon 12mm f/2.0 at Bhupatipalem Reservoir, East Godavari, Andhra Pradesh. Single exposure, sky tracked on iOptron Skytracker for 503 seconds. Mars and Saturn planets visible in the picture.
EXIF:
Sony NEX-5,
Aperture: f/2.8
Shutter speed: 503 seconds, 120 seconds (foreground)
ISO: 800
Focal length: 12mm
Nikon d810a
35mm
ISO 3200
f/1.8
Foreground: 12 x 20 seconds
Sky: 26 x 30 seconds
H-Alpha: 8 x 60 seconds
iOptron SkyTracker
This is a 46 shot panorama of the summer Milky Way arch above Cowcowing Lakes, 2.5 hours north east of Perth in Western Australia.
The red areas are hydrogen alpha emitting regions captured using a 20nm narrow band filter. The airglow this evening was particularly strong while the Large Magellanic Cloud can be seen in the top right corner.
A 6 pane mosaic from Friday night. Was going to be part of a full moon mosaic, but unfortunately I missed a bit :-(
The California Nebula, NGC 1499, a cloud of gas and dust in the constellation Perseus, named for its resemblance to the shape of California. I was surprised at the amount of detail and color separation, which results from the combination of exposures in the light of hydrogen (green), sulfur (red), and oxygen (blue). This is a mosaic of three frames with a total exposure of 9 hours with the dual hydrogen+oxygen filter and 6 hours with the sulfur filter.
Explore Scientific ED102 102mm f/7 refractor, ZWO ASI294MC Pro camera, dual narrow-band filter (Hα,[O III]), [S II] filter, iOptron CEM25P mount, ASIAir controller. Processed in Astro Pixel Processor and Lightroom
#astrophotography #deepskyphotography #nebula
Hi Folks,
Finally! After so many months... 3 wonderfully clear, Moon-free, Smoke-Free nights!
I was able to capture photons on three projects for the whole extended period. This is the first and only time I have shot this year when smoke was not an issue.
This is SH2-112 - a diffuse Emission Nebula located 5,600 light-years away in the cancellation Cygnus. This was the result of 15.7 hours of SHOrgb data.
This object does not have any fancy names and, in fact, is relatively unknown. I tried to research the background of this object - as I do for all of my targets - but I found relatively little!
It is just not well known - which is very surprising to me as it is a beautiful target with rich color and dust lane detail.
I was able to capture some RGB data along with the narrowband data so the stars are actually RGB versions of the stars, while the nebulosity is all narrowband data in the SHO Hubble Palette.
The full details of this imaging project - along with a detailed step-by-step processing walkthrough can be seen here:
cosgrovescosmos.com/projects/sh2-112
Thanks for looking!
Clear Skies,
Pat
24 @ 300 seconds in HA
Scope: AT65EDQ
Mount: iOptron iEQ45
Camera: ZWO ASI183M non cooled
Guide camera: QHY5Lii
Guide Scope: Stellarvue 60mm
Orion 5 position manual filter wheel
Schuler HA 9nm,
MyFocuer Pro v2 (Robert Brown)
Bahtinov mask
Software: APT, PHD2, Sharpcap, CdC, Pixinsight, Photoshop, Google Chrome Remote
My first attempt at the Orion nebula.
Shot with the Fujifilm XT3 using the William Optics ZS61 mounted on iOptron Skyguider pro.
Nikon d810a
50mm
ISO 6400
f/2.8
Foreground: 26 x 25 seconds
Sky: 72 x 20 seconds
H-Alpha: 9 x 60 seconds
iOptron SkyTracker
This is a 107 shot panorama of the summer Milky Way arch and Comet G3 (ATLAS) above The Pinnacles Desert, 2 hours north of Perth in Western Australia.
As the comet was rapidly setting, I started with a six image stack of that then proceeded to take the rest of the panorama as I normally do, combining the images later using MS ICE. I had initially planned on using
an 85mm lens but soon realised that it would take far too long and the summer band of the Milky Way would be well past zenith by the time I had finished, which is not ideal for a number of reasons. Still quite happy
with the way this turned out.
Comet G3 is just above the horizon on the far right, its tail was quite huge spanning around 15 degrees. The Southern Hemisphere summer arch is to the left with hydrogen alpha regions highlighted in red, captured using a special filter. Inbetween the arch and comet are the Large & Small Magellanic Clouds.
Comet C/2017 T2 (PanSTARRS) is seen near the Pinwheel Cluster (M36) in Auriga. The comet was about magnitude 11.0 to 11.5 on this date. The image was taken on October 27, 2019. The photo was made of a stack of 42 twenty second exposures taken with a Canon 80D and a Canon 200 mm f/2.8L II lens. (ISO 1000, f/3.5)
Nikon d810a
35mm
ISO 3200
f/2.0
Foreground: 8 x 15 seconds
Sky: 41 x 25 seconds
H-Alpha: 6 x 60 seconds
iOptron SkyTracker
This is a 55 shot panorama of the summer Milky Way above a grain silo at Kondut, 2.5 hours north east of Perth in Western Australia.
This is the first time I have captured the fourth Southern Hemisphere arch of the Milky Way. Yes, we have four arches! This is the second of the summer arches, the more common one has both the Magellanic Clouds and Orion outside the arch, this has them inside the arch. There's only a small window of opportunity in which to capture it so I settled on a wider 35mm lens rather than my usual 50mm or sometimes 85mm panoramas which can take well over an hour to finish, but this took just 27 minutes. Much like the setting MW, this is taken while looking towards the west, well, more like south west.
These grain silos, aka grain receival points, are all over the Wheatbelt in WA, at almost every town along the rail lines. The only other building in this town was a house that probably belongs to the caretaker of this particular silo.
Most prominent in this image are a number of red hydrogen alpha emitting regions including the Gum Nebula, pretty much at zenith when I captured this pano which is why it looks so huge. Orion can be seen to the right and the Crux & Carina region to the left.
M: iOptron EQ45
T: WO GTF81
C: ZWOASI1600MC
G: OAG ASI120MM
Lights: 60% best of 250 x 60s
Gain: 139
Temp: -15 DegC
Darks and Flats to suit.
In all about 2.5 hrs of Data.
Capture: SharpCap
Processed in Astro Pixel Processor & PS to tweek.
Nikon d810a
35mm
ISO 2000
f/1.6
Foreground: 10 x 15 seconds
Sky: 32 x 20 seconds
H-Alpha: 6 x 60 seconds
iOptron SkyTracker
This is a 48 shot panorama of the Milky Way above the Stirling Ranges, 4 hours south east of Perth in Western Australia.
This was taken the same night as my previous posted image of the Lily Windmill, a night where I saw the strongest airglow I have ever witnessed. This is mainly due to the solar maximum we're currenlty experiencing which not only produces more intense aurora events but also more intense airglow.
The red areas in the image are hydrogen alpha emitting regions, from Zeta Ophiuchi on the far left to the Gum Nebula on the far right.