My goal with framing this shot was to include the Dumbbell Nebula (tiny, but bright, on the left), the asterism Brocchi's Cluster (lower right, AKA Coathanger) and some of the well-defined dark nebulae in the region (upper right). Emission nebulae are also fairly prominent near the center.

Acquisition details: Fujifilm X-T10, Samyang 135mm f/2.0 ED UMC @ f2.0, ISO 1600, 50 x 60 sec, tracking with iOptron SkyTracker Pro, stacking with DeepSkyStacker, editing with Astro Pixel Processor and GIMP, taken July 23, 2020 from Bortle 3/4 skies.

A galaxy group in Ursa Major and Camelopardalis, one of the nearest galaxy groups to the Local Group at approximately 3.6Mpc away.

The big obvious spiral is M81, Bode's Galaxy at about 12 Mly away, with a supermassive black hole about 70 million solar masses. The bright blue the spiral arms are star formation regions; the pink/red spots are nebulae.

The second-largest is M82, aka the Cigar Galaxy, also 12Mly away, home to the brightest pulsar yet known, M82-X-2. Tidal forces from interaction with M81 have caused massive star formation.

The wispy lines and areas are Integrated Flux Nebulae (IFN), bodies of gas and dust outwith the main body of the galaxy illuminated by the light of the galaxies themselves. You could say it's a bit faint - there are stars down to magnitude 16.1 in here, easily.

This is 8 hours' exposure on the Altair 26C using 3-min subs, gain 100, Neodymium filter.

One of the brightest stars in the night sky and a dwarf galaxy right next to it: Regulus and the dwarf galaxy Leo I are a fascinating pair that I've had on my to-do list for quite some time. However, my first attempt turned out to be a failure because, after stacking, it turned out that a spike from Regulus was going right through the Leo I galaxy. I hadn't considered the spikes at all during the preparation of the capture. Fortunately, a new opportunity arose four weeks later, and I rotated the tube of my Newtonian telescope so that Leo I was now located between the spikes.

In the final stack, Leo I was nicely clear, bright, and clearly visible, so I could keep the editing very simple. Thanks to the CNC machined secondary spider, Regulus' spikes were also nearly perfect and required no corrections at all. I wish every image would work out like this...

I hope you enjoy my version of this odd couple!

Some more facts:

Regulus is not really a single star, but a multiple star system. It consists of two pairs of stars. Regulus A, the primary component in the Regulus system, is a spectroscopic binary star composed of a blue-white main sequence star with the spectral classification B7 V and a companion believed to be a white dwarf. With a visual magnitude of 1.35, Regulus A is reponsible for the star system’s brightness and bluish colour. The system lies approximately 79 light years from the Sun.

Leo I is a dwarf spheroidal galaxy in the constellation Leo. At about 820,000 light-years distant, it is a member of the Local Group of galaxies and is thought to be one of the most distant satellites of the Milky Way galaxy.

Leo I is located only 12 arc minutes from Regulus. For that reason, the galaxy is sometimes called the „Regulus Dwarf“. Scattered light from the star makes studying the galaxy more difficult, and it was not until the 1990s that it was detected visually. Typical to a dwarf galaxy, the metallicity of Leo I is very low, only one percent that of the Sun. The galaxy may be embedded in a cloud of ionized gas with a mass similar to that of the whole galaxy.

Skywatcher 200 1000 @750mm f/3.75

Starizona Nexus Coma Corrector & Reducer

Secondary Spider by Backyard Universe

EQ6-R Pro

ZWO ASI 2600 MC Pro (Gain 100, Offset 18, -10°)

RGB (Baader UV/IR Cut Filter): 180 × 60″

Total: 3 h

Bortle 5

Darks, Flats, Darkflats, Dithering

N.I.N.A., Guiding: ZWO ASI 120MM & PHD2

Astropixelprocessor, Photoshop, Pixinsight

With my experience capturing and processing deep space objects continuing to grow, I wanted to revisit a few of my favorite celestial locations including the North America and Pelican Nebulae. I think this version shows improvement and I hope you like it too.

I captured this image (from my home in Colorado) using iTelescope.net's T20 telescope located in an observatory in Beryl Junction, Utah. I captured 69 images over 2 nights using both wideband and narrowband filters and processed them with Astro Pixel Processor, Photoshop, Star Xterminator, Star Spikes Pro, and Topaz Denoise/Sharpen. I found that Star Xterminator allowed me to separate the nebulae clouds from the stars - a step that helped a quite a bit.

Exposure Settings

• 69 - 5 minute exposures

○ Luminance: 18

○ Red: 8

○ Green: 8

○ Blue: 8

○ Hydrogen-Alpha: 9

○ Sulfur-II: 9

○ Oxygen III: 9

• Total Exposure Time: 345 minutes

Telescope Optics & Camera

• Optics: Takahashi FSQ-ED (T20)

• Focal Length: 530 mm

• Mount: Paramount ME

• CCD: SBIG STL-11000 - 10.7 mb

• Observatory Location: Beryl Junction, Utah

47 Tucanae (NGC 104) is a globular star cluster located about 13,000 light years away from Earth. The actual number of stars in this globular cluster is believed to be ~500,000 stars and the core is said to contain nearly 35,000! If planets could exist around the stars in the core of this cluster, one could only imagine what you would see in the day or night sky.

Some details about the image:

Unlike the last object; this image was created by capturing light in the red, green, blue wavelengths. A clear (luminance) filter was used to capture detail.

Filters and Exposures:

Lum bin 1x1; RGB bin 2x2

Lum = 23x120 sec; 30x60 sec

R = 26x120 sec

G = 26x120 sec

B = 25x120 sec

Total integration: ~3.9hrs

Telescope and Camera:

T31 (Planewave 20" (0.51m) CDK)

Camera = FLI-PL09000

Software: AstroPixel Processor, Photoshop

North America & Pelican Nebula (2-panel mosaic)

Celestron RASA 8

Celestron Motorfocus

IDAS NBZ Dualband Filter

EQ6-R Pro

ZWO ASI 2600 MC Pro (Gain 100, Offset 18, -10°)

25 x 240 secs for each panel

N.I.N.A., Guiding with ZWO ASI 462MC and PHD2

Astropixelprocessor, Photoshop, Pixinsight

Bortle 5

An underrated area of the Gamma Cygni nebula IC 1318 - vdB 134 is a reflection nebula, reflecting the light of ω1 Cygni about 869 ly distant.

Toward the bottom of the frame is planetary nebula PLN 86 + 5 1.

128 * 3min lights OSC data with a Skywatcher 8" Quattro and Neodymium filter, lots of biases, flats and darks processed in APP, PI and Affinity.

3 hours collected (2 min exposures). 2.8 hours integrated via AstroPixelProcessor. Last month's flats, bias,darks applied. RASA 8, 2600Duo, AM5. Guiding via WO 32 Uniguide. Processed in PI. Crop/sig in PScc. SCNR applied 3 times :)

NGC 7822, a region of active star formation toward the constellation Cepheus with some amazing details of pillars and dust lanes.

70 total exposures in three mosaic tiles, 6 min. each (total 7.5 hours). Explore Scientific ED102 102mm f/7 refractor, 0.8x reducer/flattener, ZWO ASI2600MM monochrome CMOS camera, 7nm H-alpha filter, iOptron CEM25P mount, ASIAir controller, auto-guided. Processed in Astro Pixel Processor and Lightroom

#deepsky #astrophotography

Comet C/2023 A3 (Tsuchinshan-ATLAS) October 16, 2024.

30 frames, 60 sec. each (30 min. total)

Explore Scientific ED102 102mm f/7 apochromat refractor, Stellarvue 0.8x reducer/flattener

ZWO ASI294MC Pro cooled color CMOS camera, gain 120, -18ºC, ZWO UV/IR cutoff filter

ZWO EAF autofocuser

iOptron CEM25P mount

ZWO ASIAir Pro controller

auto-guided, SVBONY SV2165 30mm f/4 guide scope, ZWO ASI120MM Mini guide camera

Processed in Astro Pixel Processor, Lightroom, Photoshop

Dati: 156 x 300 sec ( 13 ore) gain 5 @ -10° c + 70 dark + 30 flat e darkflat

Filtro: Astronomik UV/IR Block L2

Montatura: EQ6 pro

Ottica: Takahashi FSQ106

Sensore: QHY168C

Cam guida e tele: asi120mm su Scopos 62/520

Software acquisizione: nina e phd2

Software sviluppo: AstroPixelProcessor e Photoshop

Temperatura esterna: 18 ° C - Umidità 70%

Date: 0:20JST- May.10, 2021

Location: Amagi Highland, Shizuoka Pref., Japan

Optics: SIGMA 70mm F2.8 DG MACRO | Art (f/3.2)

Mount: RainbowAstro RST-135

Camera: Canon EOS 6D (mod/SEO-SP4)

ISO speed: 1600

Exposure: 15x120sec.x3panel

Processing: PixInsight, AstroPixelProcessor

10x300sec.

NGC 7023: The Iris Nebula in the constellation of Cepheus.

First run at this target on a 99% full moon night.

M: iOptron EQ45-Pro

T: William Optics GTF81

C: ZWO ASI1600MC-Cooled

F: No Filters

G: PHD2

GC: ZWO ASI120mini

RAW16; FITs

Temp: -20 DegC

Gain 139

104 x Exp 100s

Frames: 104 Lights; 2 Darks; 200 flats

95% Crop

Capture: SharpCap

Processed: APP; PS; Grad Exterminator.

Sky: Full Moon, calm, no cloud, mild, good seeing.

NGC7023: 1.3 thousand light years distant.

This is a SHO version of my capture of this beautiful area in Cepheus, located between „Wizard Nebula“ and „Elephant's Trunk Nebula“. Very faint, but comprising spectacular objects like the emission nebulae Sh2-134 and Sh2-135, the open star cluster NGC 7261 and a bunch of LDNs and LBNs, it turned out as a very nice photo project.

Celestron RASA 8 f/2

Celestron Motorfocuser

EQ6-R Pro

ZWO ASI 2600 MC Pro (Gain 100, Offset 18, -10°)

Ha & OIII (IDAS NBZ Filter): 80 × 120″ (2h 40′)

TS 2600 MP Mono (Gain 100, Offset 50, -10°)

Ha: (Baader H-alpha Highspeed Ultra-Narrowband 3.5nm Filter): 70 x 120 (2h 20')

OIII: (Baader OIII Highspeed Ultra-Narrowband 4nm Filter): 140 x 120 (4h 40')

Total: 9 h 40‘

Flats, Darkflats, Dithering

N.I.N.A., Guiding with ZWO ASI 120MM and PHD2

Astropixelprocessor, Photoshop, Pixinsight

25x300s, 200-500mm f/5.6 @500mm

h + chi, the famous double cluster in the constellation Perseus. The object was already know to the greek astronomer Hipparchus 130 B.C.

Object: h + chi Persei (NGC 869 + NGC 884, Perseus Double Cluster)

Optics: GSO Newton 8" F4 + GPU

Mount: Celestron CGEM

Camera: ZWO ASI 1600MMC @-20°C, Gain=75, Offset=15

Filter: ZWO EFW 7x36mm, ZWO 36mm Filters

Exposure: total ~1h, R 40x30sec, G 40x30sec, B 40x30sec, L (mixed from RGB), 200 Bias, 40 Darks, 40 Flats per channel

Date: 2017-10-16

Location: Schwaig

Capture: Sequence Generator Pro

Guiding: Off-Axis, ASI120MM, PHD2

Image Acquisition: Stephan Schurig

Image Processing: Stephan Schurig

AstroPixelProcessor 1.070: Calibration, Registration, Normalization, Integration, Channel Combination, Background Flattening & Calibration, Star Colors Correction, Auto Digital Development

Photoshop 20.0.1: Levels, Curves, Exposure (Gamma, Offset, Exposure), Masked Nik Dfine 2 Denoise, Masked Dynamic (Dynamic, Saturation), Star Shrink, Masked HighPass Sharpening, Levels

22x100sec.

I captured this image of Albireo, one of the main, visible stars in the constellation of Cygnus. Actually, make that two as it is a double star. They stand out brightly against the glittering backdrop of the Cygnus Star Cloud.

Albireo A is the larger, amber star and Albireo B is the smaller sapphire blue star. If they are orbiting each other the orbital period is at least 75,000 years.

It turns out that Albireo A is itself a binary star with the components orbiting every 100 years. This whole system is a mere 380 light years away. You could almost touch it - if you had long arms.

The amber star is about 50 times the size of our sun and shines 950 times as bright. The little blue star is only 3 times the mass of our sun and only shines 190 times as bright.

This is a combination of 62 ten-second exposures using my C11. Any longer and the bright stars would have been way over exposed, any less and the background stars would not have shown up.

~~~~~

Telescope: Celestron C11-A XLT Schmidt Cassegrain OTA

Mount: SkyWatcher EQ6-R Pro

Controller: ZWO ASIAIR Plus 256G

Main Camera: ZWO ASI533MC Pro at -10C

Filter: ZWO UV/IR Cut filter

Focuser: ZWO EAF

Guide Camera: ZWO ASI174MM Mini guidecam

Guide via: ZWO OAG

Stacked from:

Lights 62 at 10 seconds, gain 101, temp -10C

Darks 30 at 10 seconds, gain 101, temp -10C

Flat 30 at 570 ms, gain 101, temp -10C

Dark Flat 30 at 570 ms gain 101 temp -10C

Bortle 4 sky.

Integrated the saved frames in Astro Pixel Processor.

Processed in PixInsight

Added captions in Photoshop CS4

M44 IC4665 Summer Beehive Cluster

This is a first light from a revamped setup where the camera and mount have been upgraded. The conditions were not ideal, the wind was moderate with gusts up to 16mph and the ambient temperature was in the teens deg C.

Processing didn't go as smoothly as I had originally hoped, with Pixinsight failing to register red and green filter lights. AstroPixelProcessor struggled with the light pollution mainly contained within the luminescence frames, however I was pleased with the the inital performance of the ZWO ASI533MM Pro.

Frames taken on June 6, 2023

Mount: iOptron CEM40G

OTA Imaging: Skywatcher 120ED with x0.85 flattener, f6.35, 768mm

Camera:ZWO ASI533MM Pro, Cooled to -10 deg C

Filter Wheel: ZWO EFW Mini

Focuser: Primaluce Lab ESATTO

Rotator: Primaluce Lab ARCO

Guiding: iOptron iGuide, 120mm : 2.9um

Computer: Primaluce Lab Eagle Pro 2 + ECCO2 (Enviroment)

Light Exposures:

Luminescence .. 40 x 60 seconds

Red ........... 40 x 60 seconds (2 rejected)

Green ......... 40 x 60 seconds

Blue .......... 40 x 60 seconds (5 rejected)

Calibration files:

BIAS .......... 100

Dark .......... 25

Flat .......... 25 per filter

Dark flat ..... 25 per filter

Total integration time: 2.55 hours

Processing

AstroPixelProcessor -> Photosphop -> Topaz DeNoise AI -> Photoshop

Center (RA, Dec): (266.608, 5.724)

Center (RA, hms): 17h 46m 25.849s

Center (Dec, dms): +05° 43' 25.817"

Size: 50.5 x 50.5 arcmin

Radius: 0.595 deg

Pixel scale: 1.01 arcsec/pixel

Orientation: Up is -179.1 degrees E of N

It'd been awhile since I'd been astrophotographing - felt great to be out under the stars and a smokeless sky. Fall is a excellent time for widefield astrophotography in the western US - there's a decent amount of astronomic dark, plenty of clear nights, temperatures aren't too cold, and quite a few interesting widefield subjects are available.

My goal with this small mosaic (only 2 panels) was to capture both the Fireworks Galaxy (NGC 6946, tiny here, bottom left) and the Elephant Trunk Nebula (IC 1396) in the same extent, with all of the interesting nebulosity in between, most notably the dark nebula Barnard 150 (AKA the Seahorse Nebula) in the lower left, one of my favs.

Surprisingly, I didn't detect much of the red emission Flying Bat Nebula (Sh2-129, center), part of which actually appears bluish (?, at first I was excited that I might have detected the Giant Squid Nebula (OU4), but nope, the blue is not in the right place). Previously I had captured Sh2-129, albeit faintly, with this same set up in the same location.

Part of the reason for this is that I stopped my Samyang 135mm down a half stop to f 2.4 (which I usually shoot wide open at f 2), not to tighten up stars, but to flatten out the heavy vignetting a tad. It did make a difference, but I did also notice that the Elephant Trunk Nebula didn't show up as strongly as expected based on my previous imaging of it. I'm still undecided whether I'll stay with f2 or move to f2.4, might depend on the subject.

There is a decent amount of what appears to be blue reflection nebulosity around star HD 198793 in the upper left quadrant; looking at widefield images of others, I can also see this faintly, but I haven't been able to find any closer images of it yet and it isn't cataloged in my astronomy app (SkySafari 6 Plus). It's possibly a processing artifact although it doesn't appear to be one.

Acquisition details: Fujifilm X-T10; Samyang 135mm f/2.0 ED UMC @ f2.4, ISO 1600; tracking with iOptron SkyTracker Pro; two panel mosaic - 42 x 60 sec and 44 x 60 sec; stacking with DeepSkyStacker; editing and mosaicking with Astro Pixel Processor; and curves adjustment/star reduction/editing with GIMP; taken on Aug. 31, 2021 under Bortle 3/4 skies.

✨ Voyage au cœur de la constellation d'Orion ✨

Après 4 heures de prise de vue et près de 30 heures de travail, avec 4 versions différentes à la clé, voici le résultat de ma dernière session d'astrophotographie.

J’ai capturé une partie de la majestueuse constellation d’Orion avec mon 135mm, mettant en lumière les subtiles nébuleuses qui peuplent cette région de notre ciel hivernal.

Durant ces 4 heures d’acquisition, j'ai aussi réalisé une série d’images sous-exposées pour mieux révéler le cœur de la nébuleuse d’Orion. Un grand merci à mon ami Harry Collis pour ses précieux conseils, sans qui je n'aurais peut-être pas atteint ce résultat avec autant de facilité. 🙏

Orion, la star de l'hiver, n'arrêtera jamais de nous fasciner et de nous inspirer, nous les astrophotographes du monde entier. ✨

Technique :

Apn défiltré + star aventurer + Samyang 135mm f2

240 lights à 60sec, 1600 iso, f2.8, 30 lights à 15sec, 30, lights à 4sec & 30 lights à 1sec (même réglages pour la série sous exposée)

100 flats, 100 offsets

AstroPixelProcessor, GraXpert, Starnet++, Photoshop, LR (export)

Comet C/2020 F3 NEOWISE cruising thought the constellation Auriga and about to enter the Lynx constellation. It has an orbital period of roughly 6.800 years, which means it was last seen around 4.800 B.C. At its closest point to the Sun, it's only 44 million kilometers away from it. At its furthest point from the sun, which it will reach in about 3.400 years, it'll be 107 billion kilometers away from it. Currently the comet is a naked-eye comet, meaning you can spot it in the night sky without the aid of binoculars or telescopes.

Object Information

* First frame date : 12-07-2020

* First frame time (local): 03:11

* First frame time (UTC): 01:11

* Distance from Earth : 129.540.000km

* Distance from Sun : 58.558.000km

* Last frame date : 12-07-2020

* Last frame time (local): 03:19

* Last frame time (UTC): 01:19

* Distance from Earth : 129.515.000km

* Distance from Sun : 58.574.000km

Shooting Location :

* 51° N 3° E

* Noordstrand, Oostende

* bortle class 6 beach

Hardware

* Imaging Lens : Canon EF 70-200mm f/2.8 L II IS USM @ 200mm

* Imaging Camera : Canon EOS 6D Mark II

Exposures

* ISO speed : 1600

* Aperture setting : f/2.8

* Shutter speed : 2 seconds

* Light Frames : 77x

* Total Integration Time : 154 sec

Capture Software

* built-in intervalometer

Processing Software

* AstroPixelProcessor (Registration & stacking)

* PixInsight (Stretching)

* Topaz DeNoise AI (Noise reduction)

* Adobe Photoshop (Fine-tuning)

24x300sec.

Tried a new technique to capture Andromeda, 79 shots of 30 seconds exposure at ISO 10,000, stacked in Astro Pixel Processor. I would have taken more but the fog rolled in and crashed the party ;)

Nikon D500 - Nikkor 500mm f4 AI-P - Celestron CGEM

RA: 03h47m00.00s

Dec: 24°07'01.20"

Constellation: Taurus

Designation: M45

Image Details: 180x90S at Gain 0

Darks: 101 Frames

Flats: 101 Frames

Bias: 201 Frames

Acquisition Dates: Dec. 12, 2020 , Jan. 9, 2021 , Feb. 9, 2021 , Feb. 10, 2021

Total Capture time: 4.5 Hours

Equipment Details:

Imaging Camera: ZWO ASI Cameras ASI6200MC Pro 62mpx Full Frame OSC

Imaging Scope: Sharpstar Optics 15028HNT Hyperboloid Astrograph

Guide Camera: Starlight Xpress Ltd Lodestar X2

Guide Scope: 365Astronomy.com 280mm Guide Scope

Mount: Sky-Watcher EQ8 Pro

Focuser: Primalucelab Sesto Senso V2

Filter: Optolong Astronomy Filter L-Pro 2"

Power and USB Control: Pegasus Astro USB Ultimate Hub Pro

Acquisition Software: Main Sequence Software. Sequence Generator Pro 3.2

Calibration and Stacking: Astro Pixel Processor

Processing Software: PixInsight 1.8.8 and EZ Processing Suite for Star Reduction

Full Size Image

Astrobin: www.astrobin.com/1m3rgl

There’s no better time to reprocess images than during cold and cloudy winter nights. I briefly imaged the California Nebula In September 2019. I planned to add many more hours of time on this target before posting it, but life and cloudy nights got I. The way, for now. .

The California Nebula is located 1,000 lys from Earth. .

This image consist of 20 minutes of data taken with: Stellarvue sv80ed, Asi294mc-p, ioptron iEQ30, baader uv/ir filter.

Data acquisition: 20x60sec @200 gain, 10 offset, 0 degrees.

Processed: #astropixelprocessor, pixinsight Lightroom, photoshop AND 1792 Bourbon.

Captured with: NINA.

Sharpless Sh2-10 is an emission nebula located in the constellation of Scorpius. It’s very rarely imaged despite being, so to speak, in plain sight between two of the most popular targets in Scorpio-The Lobster (aka The War and Peace ) Nebula and The Cat’s Paw Nebula. It is quite faint but presents interesting structure even when imaged with a small telescope.

This image was constructed with four hours of Ha data acquired with a Sharpstar Z4. 2 hours of colour data was acquired with a William Optics RedCat51. Ha and RGB data was stacked in AstroPixelProcessor. and the stacked images were registered and aligned in APP.

The registered and aligned images were cropped and processed in PixInsight

after gradient extraction with the SetiAstro ADBE script, the RGB image was plate solved and Spectrophotometrically Colour Calibrated.

Blur X was NOT applied on RGB- it was found to create " worms" -artefacts after stretching.

Stars were removed with StarNet ++ and the starless image was stretched with GHS.

A similar process was followed for the Ha data except Blur X was run twice, SPCC was not used (obviously)

After GHS stretching Dark Structure Enhance and Local Histogram Equalisation processes were run

starless RGB and Ha were combined using the combine Ha with RGB script

The resultant image was blurred with light deconvolution and a LRGB image was constructed using the combine LRGB script

Stars were processed using the SetiAstro star stretch script and added to the starless image with Pixelmath

Comet C/2017 K2 (PanSTARRS) continues to brighten but is still quite faint, though positioned fairly high in the sky overnight. It will likely get somewhat brighter as it approaches closest to Earth in July. Last night the comet appeared near the loose open cluster IC 4665 in the constellation Ophiucus as our streak of clear nights continues.

10 3-minute exposures, Explore Scientific ED102 102mm f/7 refractor, ZWO ASI294MC camera, UV/IR cutoff filter, iOptron CEM25P mount, ASIAir controller. Processed in Astro Pixel Processor, Lightroom, and Photoshop.

After adding 5 panels extra the "Volcano shape" with M81 at the volcano top is clearly visible. This is an annotated version.

The Integrated Flux Nebulae (or Galactic Cirrus) are high galactic latitude nebulae that are illuminated not by a single star (as most nebula in the plane of the Galaxy are) but by the energy from the integrated flux of all the stars in the Milky Way. These IFN are very faint and were discovered in 2005 by Steve Mandel. This mosaic shows sections of 2 main Nebula in the Mandel-Wilson Catalogue, the Volcano Nebula (MW3 near Messier 81/82) and the Angel Nebula MW2.

1583x300 second Luminance subs (132 hrs)

Image dates: 17 nov, 1,5,6,8,12,31 dec 2018, 1,2,3,4,5,6,7,8,9,10,11,12 jan 2019. 2,3,4,5,6,7 feb 2019.

Esprit 100 f5.5 APO refractor/ QHY16200 CCD @-20C.

Processed/calibrated/Mosaic: AstroPixelProcessor (APP), Final processing/annotation with Pixinsight.

en.wikipedia.org/wiki/Steve_Mandel

en.wikipedia.org/wiki/Integrated_Flux_Nebula

Photographing Space Image of the week: 4 Nov. 2019: photographingspace.com/iotw-nov-04-2019/

Knight Observatory, Tomar

Flickr Explore & Astrobin Image of the day 27 aug 2017:

www.astrobin.com/307683/D/?nc=iotd

Image of the week feb 5, 2018 on PhotographingSpace:

photographingspace.com/iotw-feb-5-2018/

Building further on the 48 (50) panel mosaic i added a row of 16 panels to include the Veil nebula Complex.The registration RMS error is only 0.1 pixel.......

As a basis for this Mosaic I used 70 separate stacks (also made with APP) with integration times between 45 and 345 minutes each depending on the object in the frame. An all new mosaic registration algorithm was used that is capable of truly sub pixel perfect registration of these large Mosaics. And the whole process is fully Automatic. The full size version is 29320x35386 pixels giving 1038 Megapixels).

That is not practicle for web use, but this upload is a 50% reduction and still a 120 Megabyte JPG.

You can download the 50% version by selecting the downloadlink here on Flickr.

Processing: only histogam stretch and curves adjustments, nothing else.

The Fits file size of the full version is 3.7 Gb.

Data collected between may 8 and july 31, 2017.

Esprit 100 Triplet APO f5.5 telescope and QHY16200 CCD Camera cooled to -20 C with Baader 6nm H-alpha filter.

Mosaic settings APP with version 1.0521 (Experimental version to test new Algorithm):

3) Analyse stars

min size: 4

Clip Prof: 0.1

Filter profile: off

Kappa: 3 (set to detect 3000-5000 stars)

4) Register

Pattern recognition: pentagons

scale start: 5

scale stop: 10

use dynamic distortion corr: on

same camera and optics: off

Distortion margin: 0.02

# of overlapping frames: 9

registration mode: mosaic

registration model: projective

6) Integrate

composition mode: full

LNC degree: 4)

LNC it: 3

enable MBB: on

MBB%: 5

No under/overshoot on

Integrate set scale 1.0

The Astro Pixel Processor website: www.astropixelprocessor.com/

More versions and information on : www.astrobin.com/307683/C/

Knight Observatory, Tomar.

(Explore)

10 x 150 sec iTelescope T2 a 150 mm Takahashi refractor

Although small, NGC 2266 is a nice cluster, it has stars of diverse colors that not as well presented with short exposure necessary due to the comet's motion requiring only a few minutes of capture. The different colors of the stars within the cluster is quite apparent even with short integration time. Aligned on stars, the comet although slow moving against the background is a little elongated from motion. AstropixelProcessor and Photoshop processed.

Dati: 64 x 300 sec a gain 5 e offset 25 @ -15° c + 117 dark + 30 flat e darkflat

Filtro: Astronomik UV/IR Block L2

Montatura: EQ6 pro

Ottica: Takahashi FSQ106

Sensore: QHY168C

Cam guida e tele: magzero mz5-m su Scopos 62/520

Software acquisizione: nina e phd2

Software sviluppo: AstroPixelProcessor e Photoshop

Temperatura esterna: 12 ° C - Umidità 37%

TELESCOPE-Z4

CAMERAS; ZWO ASI 533 MC AND 533 MM @-10 DEGREES C

FILTERS; ANTLIA TRIBAND FOR RGB; ANTLIA 3 NM HA

INTEGRATION: 45 MINUTES IN RGB; 240 MINUTES IN HA

MOUNT; HEQ5 PRO

LOCATION: BORTLE 7.6

PROCESSING

STACKING IN ASTROPIXELPROCESSOR

PROCESSING IN PI-

ALIGNMENT

DYNAMIC CROP

ADBE

BLUR X CORRECT

BLURX SHARPEN

MAS

STARX

HARGB COMBINE RGB AND HA STARLESS

GHS

DARKSTRUCTURE ENHANCE

LOCALHISTOGRAM EQUALISATION

CURVES TRANSFORMATION

The Cygnus Loop (a.k.a. Veil Nebula) in the constellation Cygnus, the remnants of a supernova explosion in which a star blew itself apart after exhausting its primary nuclear fuels.

A mosaic of 72 exposures, 300 sec. each in six overlapping fields in the light emitted by hydrogen gas. Explore Scientific ED102 0.1m f/7 refractor, Stellarvue 0.8x reducer/flattener, ZWO ASI294MC camera, 7nm H-alpha filter, iOptron CEM25P mount, ASIAir controller, autoguided. Processed in Astro Pixel Processor and Lightroom.

Dati: 58 x 300 sec a gain 5 e offset 25 @ -15° c + 117 dark + 30 flat e darkflat

Filtro: Astronomik UV/IR Block L2

Montatura: EQ6 pro

Ottica: Takahashi FSQ106

Sensore: QHY168C

Cam guida e tele: magzero mz5-m su Scopos 62/520

Software acquisizione: nina e phd2

Software sviluppo: AstroPixelProcessor e Photoshop

Temperatura esterna: 11 ° C - Umidità 50%

This image was a cooperation with Mabula Haverkamp (the maker of astropixelprocessor) who was imaging M106 at the same time as I did. We shared our data to look what we could get out.

This is the result with a resolution of 1.36"/pixel and a limit of a magnitude of around 22.5.

We were quite happy with this result!

Mabula:

Telescope: Takahashi TSA102

Camera: ASI 1600mm-c

B: 33x120s, 97x300s 9,2h

G: 33x120s, 57x300s 5,9h

R: 33x120s, 85x300s 8,2h

Ha: 20x900s 5h

L: 20x120s, 198x300s 17,2h

Andre:

Telescope: TMB92ss

Camera: QSI583ws

L: 130x300s 10,9h

Total: 56,4 h

LDN 673 (upper right quadrant) is one of those dark nebula that I often stopped to admire when surfing astroimages. I was excited to find that I could capture some of its structure at 135mm, and that it would fit nicely in the same 135mm extent with the more frequently imaged Barnard's E. This shot has been planned for awhile but took me awhile to get to.

Acquisition details: Fujifilm X-T10; Samyang 135mm f/2.0 ED UMC @ f2.0, ISO 1600; tracking with iOptron SkyTracker Pro; 36 x 60 sec; stacking with DeepSkyStacker; editing with Astro Pixel Processor; and curves adjustment/star reduction/editing with GIMP; taken on Sept. 2, 2021 under Bortle 3/4 skies.

I shot this area with this exact framing last December, but wanted to improve my image. This time my focus was better (I didn't have a Bahtinov mask then), I shot and processed raw (jpeg last time), and I used Astro Pixel Processor tools for processing.

The only thing that wasn't better this time around was my tracking - I only used 50% of my subs, many of which still had slightly trailed stars; I think my balance was off. I would have liked more integration time, but still got a result I'm happy with using only 35 minutes of data.

Fujifilm X-T10, Samyang 135mm f/2.0 ED UMC @ f2.0, ISO 1600, 35 x 60 sec, tracking with iOptron SkyTracker Pro, stacking with DeepSkyStacker, editing with Astro Pixel Processor and GIMP, taken on Oct. 6, 2019 under Bortle 3/4 skies.

Jan 7 2020 edit: A very slight re-edit - I monkeyed with the original stack a bit less this time - I like the Horsehead Nebula better in this version.

This Supernova remnant at 1470 Lightyears distance is imaged here in RGB color. The reddish and Blue-Green Emission Nebula shows the colours of H-Alpha and [OIII]. This image is a small section of a Veil Nebula Complex Mosaic i am working on.

Imaged with an Esprit 100 f5.5 refractor/QHY16200 CCD @-20C.

Integration time 10.8 Hr.(43x300 sec Red, 42x300sec Green, 44x300sec Blue)

Imaged on 17,18,19 Apr+ 13,14,15,16 May 2018.

Processed in Astropixelprocessor (Using 2x Drizzle) and Pixinsight.

Knight Observatory, Tomar

en.wikipedia.org/wiki/Veil_Nebula

A colour take on the California Nebula (NGC1499).

The California Nebula is an emission nebula located in the Northern constellation of Perseus, approx 1300 light years distant.

Taken through Luminance/Red/Green/Blue filters on a monochrome astrocamera. The result is a 4 panel mosaic of 36 minute (9 x 240s) exposures on each filter, and each of four panels. That's around 9.6 hours total exposure (2.4 hours on each panel).

T: William Optics 81GTF.

C: ZWO ASI533MM-Pro.

M: Pegasus NYX-101.

G: OAG & ZWO ASI220MM.

R: Pegasus Falcon V2.

EFW: ZWO Electronic Filter Wheel (2" LRGB only).

EF: Pegasus FocusCube 3.

S: NINA to Capture and APP & Photoshop to process.

Dati: 52 x 300 sec a gain 5 e offset 25 a -10° c + 70 dark + 30 flat e darkflat

Filtro: Astronomik UV/IR Block L2

Montatura: EQ6 pro

Ottica: Takahashi FSQ106

Sensore: QHY168C

Cam guida e tele: magzero mz5-m su Scopos 62/520

Software acquisizione: nina e phd2

Software sviluppo: AstroPixelProcessor e Photoshop

Temperatura esterna: 18 ° C - Umidità 68%

This is one of those astronomy targets where I cannot quite make out the relationship between the name and the visual appearance of the object, but nevertheless this is SH2-132 or commonly known as The Lion Nebula.

I think the dark lines near the two dark areas may represent the lions mouth like an upside down Y, but who knows. This region is rich in HII, but also very rich in OIII as you can see by the blue in the image. I have produced both the HOO (Hydrogen Alpha+Oxygen III + Oxygen III as RGB) and the Hubble Palette SHO (Sulphur Dioxide II + Hydrogen Alpha + Oxygen III as RGB)

Image Details:

Acquisition Dates: Aug. 9, 2022 · Aug. 20, 2022 · Sept. 17, 2022 · Sept. 19, 2022 · Sept. 25, 2022 · Sept. 28, 2022 · Nov. 4, 2022 · Nov. 17, 2022 · Nov. 19, 2022

Frames:

Baader H-alpha Highspeed(f/2) 50 mm: 101×150″(4h 12′ 30″) (gain: 100.00) -10°C bin 1×1

Baader O-III Highspeed(f/2) 50 mm: 101×150″(4h 12′ 30″) (gain: 100.00) -10°C bin 1×1

Integration: 8h 25′

Darks: 51

Flats: 51

Bias: 201

Equipment:

Imaging Camera: ZWO ASI Cameras ZWO Astronomy CamerasASI6200MM Pro Gain 100 -10C

Imaging Scope: Sharpstar Optics 20032PNT F3.2 Paraboloid Astrograph

Filters: Baader Planetarium Ultra Fast, Ultra Narrow Ha, OIII and SII 50.4mm filters

Filterwheel: ZWO ASI Cameras ZWO Astronomy Cameras 7x EFW

Guide Camera: ZWO ASI Cameras ZWO Astronomy Cameras ASI290MM

Mount: Sky-Watcher EQ8 Pro German Equatorial Mount

Auto Focuser: Primalucelab Sesto Senso2

Environmental conditions: Primalucelab ECCO2

Observatory Control: PrimaLuceLab Eagle Eagle 4 Pro

Roof Control: Talon RoR

Image Acquisition: Main Sequence Software Sequence Generator Pro

Image Calibration and Stacking: Astro Pixel Processor

Image Processing: PixInsight, EZ Processing Suite and StarExterminator

auch als "Siebengestirn" bekannt. 43 Aufnahmen (12xL, 11xR, 10xG, 10xB, zur Hälfte jeweils 30sec und 60sec). 32 Minuten Gesamtbelichtungszeit. Aufgenommen mit T14 von iTelescope.net in Mayhill, New Mexico. Bearbeitet mit AstroPixelProcessor, Photoshop, AstronomyTools, Lightroom.