Canon 1100D Fullspectrum CLS CCD Tecnosky 70/420 ED 1X; Skywatcher AZEQ5

ISO 1600 - Exp: 6h6' (61x6') ASI120MC guide; Darks & Flats & Bias

APP + PS (Astronomy Tools; Tonalitymasks) + LR

Siena, 14/06/2018

Uranus is the seventh planet in distance from the Sun and the least massive of the solar system’s four giant, or Jovian, planets, which also include Jupiter, Saturn, and Neptune.

Its moons are named after characters created by William Shakespeare and Alexander Pope. These include Oberon, Titania, Umbriel, Ariel and Miranda. All are frozen worlds with dark surfaces. Some are ice and rock mixtures. The most interesting Uranian moon is Miranda; it has ice canyons, terraces, and other strange-looking surface areas.

The bright star to the right is Omicron Arietis in Aries.

Telescope: Celestron C11-A XLT Schmidt Cassegrain OTA

Mount: SkyWatcher EQ6-R Pro

Controller: ZWO ASIAIR Pro

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 1 at 30 seconds, gain 100, temp -10C

Darks 20 at 30 seconds, gain 100, temp -10C

Flat 30 at 80.0ms, gain 100, temp -10C

Dark Flat 30 at 80.0ms, gain 100, temp -10C

Bortle 4 sky.

Integrated the saved frames in Astro Pixel Processor and adjusted in Photoshop CS4.

500 images of 30 seconds stacked in AstroPixelProcessor shoot with a Fuji X-T30 and the Samyang 135mm f/2 at ISO 800

Eagle nebula M16 NGC 6611 Omega nebula M17 NGC 6618; 12 x 300s; ISO 200. Farm Kiripotib, Namibia

© Julian Köpke

NGC 6888 nébuleuse du Croissant , Sony A7s 140x30s, 30 flats, 40 darks, 25 offsets, traitement AstroPixelProcessor, Pixinsight, et Photoshop CC, grosse galère car mon A7S souffre de "Banding" et très dur à atténuer.

IC 1848, known as the Soul Nebula (companion to the Heart Nebula).

November 4-5, 2021. 2x2 mosaic, each roughly 2 hours of total exposure. Explore Scientific FCD-100 102mm telescope, ASI294MC camera, dual narrow-band filter (H-alpha, [O III]), iOptron CEM25P mount, ASIAir controller, processed in Astro Pixel Processor and Lightroom.

Abell 1367 Galaxy Cluster, stitched together in Astropixelprocessor.

St-avg-0.0s-SC_1_2.0_none-x_1.0_LZ3-NS-full-eq-add-sc_BWMV_nor-AA-RL-MBB11_1stLNC_it2_scale curves denoise clone_bin2

The Sombrero Galaxy (M104), 04/18/2021

Like I said in my last photo, its galaxy season, lol. A few weeks ago, I took my gear up into the woods and was able to capture lots of images while in the dark skis. I have always wanted to photography this galaxy, but it is really small and far away (31 million light-year), but I did it anyways. This picture is cropped in a lot. The Sombrero Galaxy is almost perfectly edge on to our field of view, so the dust lanes really pop. It also contains one of the biggest super-massive black holes ever discovered.

Equipment:

RASA 8

iOptron GEM45

ZWO ASI294MC-Pro

ZWO Asiair

Optolong L-Pro filter

Details:

Location – Long Mire Campground

Bortle Class 2

167 30-second Lights (1.4 hrs.)

60 Darks

60 Dark flats

60 Flats

Astro Pixel Processor

Lightroom

Photoshop

#astrophotography #astronomy #comos #nightphotography #space #telescope #deepsky #asi294mcpro #amateurastronomy #backyardastronomy #asiair #asiairpro #celestronrasa #celestron #ioptron #ioptrongem45 #astropixelprocessor #optolong #telescope #astronomyphotography #deepskyobject #zwo #longexposurephotography #M104 #sombrerogalaxy

Nikon D5300 (unmodded)

WO GT81

SW HEQ-5Pro (unguided)

137 lights - 120sec

20 Darks

M81 è una bella galassia a spirale situata nella costellazione dell'Orsa Maggiore. Si tratta dell'oggetto n.81 del famoso catalogo Messier, ma è anche conosciuta come galassia di Bode.

Distanza dalla terra, 11.740.000 anni luce.

Setup SkyWatcher Heq5 goto, rifrattore Svbony SV503 102ed, camera Qhy183, impostata a -5 gradi, gain 11 offsett 30 filtro Svbony CLS, camera guida Asi 224mc teleguida 60/240.

Tot. Integrazione ore 16:00 risultato della somma di 192 Light da 300” più Dark, Flat e DarkFlat.

Software di acquisizione Ekos tramite dispositivo raspberry e OS StellarMate.

Software somma e elaborazione, AstroPixelProcessor e Pixinsight.

Bortle 7.2.

Cieli Sereni

Technical data:

Remote Observatory "FarLightTeam"

Team: Marc Valero, José Esteban, Jesús M. Vargas, Bittor Zabalegui.

Telescope: Takahashi FSQ106 ED 530mm f/5

CCDs: QSI683 wsg8

Filters: Baader Planetarium - LRGB

Mount: 10Micron GM1000 HPS

Imaging Software: Voyager

Processing Software: PixInsight-AstroPixelProcessor

Imaging Data:

Captured Between February 1 to April 30, 2022 in 6 sessions due to bad weather.

( Fregenal de la Sierra ) Badajoz, Spain.

Hosting "E-EYE Entre Encinas y Estrellas"

Image composed of:

Luminance 54 x 900" .....13,5 hours

RGB 28x300" on each channel ..... 7 hours

Total ....20,5 hours

Darks, flats, bias

Processed by: Jesús M. Vargas

Technical explanation of objects :

The Virgo cluster is a cluster of galaxies located approximately 59 ± 4 million light-years away in the direction of the constellation Virgo. It contains some 1,300 known galaxies, although there may be as many as 2,000, and forms the central region of the Local Supercluster, in which the Local Group is also found. Its mass is estimated to be 1.2×1015 MS up to about 8 degrees from the center of the cluster, which is equivalent to a radius of about 2.2 Mpc.3

Many of the bright galaxies in this cluster, including the giant elliptical galaxy Messier 87, were discovered in the late 1770s and early 1780s and later included in Charles Messier's catalogue. Described by Messier as starless nebulae, their true nature would not be discovered until the 1920s.

The cluster subtends a maximum arc of about 8 degrees centered on the constellation Virgo, and many of its galaxies can be seen with an amateur telescope. Its brightest member is the giant elliptical galaxy M49, but the most notable and famous is the galaxy M87, located in its center.

In the center of the image we show we have NGC 4435 and NGC 4438, also known as the Eye Galaxies or Arp 120, they are two galaxies in the Virgo Cluster, about 52 million light years from our galaxy, also visible with amateur telescopes.

NGC 4435:

NGC 4435 is a barred lenticular galaxy showing a ring of dust around the nucleus. Through studies carried out with the Spitzer telescope, a young stellar population has been detected in its center, which indicates that 190 million years ago it suffered a stellar outbreak perhaps caused by an interaction with NGC 4438, and almost all of its hot gas, according to studies. made in X-rays with the Chandra telescope, is concentrated in its central region. It also seems to have a long tail that was also thought to be produced by this event, but which is actually a system of dust clouds in our galaxy that is totally unrelated to NGC 4435.

NGC 4438:

NGC 4438 is a hard-to-classify galaxy that has been classified as both a spiral galaxy and a lenticular galaxy, which explains its inclusion in Halton C. Arp's Atlas of Peculiar Galaxies. It is one of the most notable galaxies in the cluster due to its highly distorted appearance, which shows that it is undergoing or has undergone gravitational interactions, and for the unknown mechanism that causes its central region to show activity, and that it has expelled opposing gas loops at one the other. A starburst, a black hole, or an active galactic nucleus has been thought of, and all possibilities are under investigation. It also shows a low content of neutral hydrogen, perhaps due to its friction with the hot gas that fills the intergalactic medium of Virgo or with the corona of hot gas that surrounds the nearby galaxy M86 and/or due to having been torn away by gravitational attraction. of some galaxy with which it was about to collide (perhaps M86 itself), in addition to a displacement of the different components of its interstellar medium (neutral hydrogen, molecular hydrogen, hot gas, and interstellar dust, which reaches up to a distance of 4-5 kiloparsecs from its disk) in the direction of NGC 4435 -which tends to be attributed, however, to friction with the aforementioned intergalactic medium-, and finally traces of having undergone several bursts of star formation.

A pair of interacting galaxies?

NGC 4435 and NGC 4438 have been and are considered by numerous authors to be a pair of interacting galaxies, having calculated that the two galaxies came close 100 million years ago to just 16,000 light years from each other. In any case, and despite the strong evidence in favor of an interaction between the two, other scientists have expressed doubts as to whether the two galaxies are actually interacting despite their apparent proximity, since their redshifts are different and NGC 4435 is barely visible. has suffered the effects of such interaction. It has also been speculated that NGC 4438 may actually be two galaxies merging, having nothing to do with NGC 4435, which has interacted in the past with M86 (to which it seems to be joined by filaments of gas and in which it is detected certain amount of interstellar dust and atomic and ionized hydrogen that seems to come from NGC 4438, which reinforces this possibility) causing the peculiarities observed in it, that the three mentioned galaxies have interacted with each other, and even that NGC 4438 may be being torn apart by the gravity (tidal forces) of M87, which is only 58 arcminutes away from it (and seems to have gotten as close as 300 kiloparsecs).

About 40 million years ago in a galaxy far, far away a White Dwarf and its binary companion fought their own Star War. The result was a spectacular supernova in that galaxy which outshone even the galactic core. It will have been a spectacular event for all of the citizens of the star systems in that galaxy.

This month, the light from this explosion eventually reached here, being first seen by citizens of good old planet Earth on 14 July 2025. And ten days later by me and my C11.

You can see the supernova in my photo. It is the bright spot to the right of the core of the galaxy. You can zoom in on the picture to see the detail for yourself.

For a more technical description:

The Deer Lick galaxy, NGC 7331, is an unbarred spiral galaxy located 39.8 million light-years away in the constellation Pegasus.

On 14 July 2025, a supernova, named SN 2025rbs, was discovered in this galaxy. It is a type Ia supernova: which typically takes place in binary star systems, in which one of the components is a white dwarf. The white dwarf receives a flux of matter from a more massive companion star, creating an accretion disk which collapses and eventually ends up in a supernova explosion.

Shorter exposures (3 seconds and 20 seconds) did not capture the detail of the galaxy. With longer exposures (120 seconds) the glow of the galaxy burned out the supernova. I compromised with 30-second frames).

The sky clouded over after about 20 minutes so the result is not as good as the picture I got of NGC7331 last year.

~

Telescope: Celestron C11-A XLT Schmidt Cassegrain OTA

Mount: SkyWatcher EQ6-R Pro

Controller: ZWO ASIAIR Plus

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

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

Flat 30 at 560 ms, gain 101, temp -10C

Dark Flat 30 at 560 ms, gain 101 temp -10C

Bortle 4 sky.

Integrated the saved frames in Astro Pixel Processor.

Processed in PixInsight

Cropped and captions added in Photoshop CS4

This is a composite of imaging performed on 4 consecutive nights of the conjunction of Comet C/2017 T2 (PANSTARRS) with the famous Double Cluster of Perseus (NGC 869 & NGC 884) during the nights of January, 26 - 29, 2020.

C/2017 T2 - NGC 869 - NGC 884

Imaging Telescope-- Skywatcher Esprit 121

Imaging Camera-- ASI1600mm

Mount-- Paramount MyT

Filters-- 20 X LRGB 30s, 4 nights

Total Integration-- 40min

Image Scale (arcsec/pixel)-- .90 as/px

Software-- AstroPixelProcessor, PixInsight,Photoshop

Date-- 1/26/2020 - 1/27/2020

Location-- Dark Sky, New Mexico

NGC6992 la grande dentelle du Cygne

Cette nébuleuse se trouve dans la constellation du Cygne et, comme son nom l'indique,

s'apparente à de la Dentelle avec ses filaments d'oxygène (bleu) et d'hydrogène (rouge) qui s'entrelacent.

Sony A7S astrodon + filtre deep sky + lunette Orion 80ED + réducteur 0.85

140x30s à 3200iso + 50 darks + 50 offsets + 40 flats

Traitement sous AstroPixel Processor et Pixinsight pour la réduction d'étoiles.

The Crescent Nebula (also known as NGC 6888, Caldwell 27, Sharpless 105) is an emission nebula in the constellation Cygnus, about 5000 light-years away from Earth. It is formed by the fast stellar wind from the Wolf-Rayet star WR 136 (HD 192163) colliding with and energizing the slower moving wind ejected by the star when it became a red giant. The result of the collision is a shell and two shock waves, one moving outward and one moving inward. The inward moving shock wave heats the stellar wind to X-ray-emitting temperatures.

It is a rather faint object located about 2 degrees SW of Sadr. For most telescopes it requires a UHC or OIII filter to see. [Courtesy of Wikipedia en.wikipedia.org/wiki/Crescent_Nebula ]

I don't have a UHC or OIII filter so I just used my UV/IR Cut filter. Being near Sadr, it is close to the centre of the Milky Way which is why the image is flooded with stars. Definition is lost on the stars at the edges since I don't have the Edge HD version of the C11. It costs about three times more than the scope I have.

Telescope: Celestron C11-A XLT Schmidt Cassegrain OTA

Mount: SkyWatcher EQ6-R Pro

Controller: ZWO ASIAIR Pro

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 23 at 300 seconds, gain 100, temp -10C

Darks 10 at 300 seconds, gain 100, temp -10C

Flat 30 at 80.0ms, gain 100, temp -10C

Dark Flat 30 at 80.0ms, gain 100, temp -10C

Bortle 4 sky.

Integrated the saved frames in Astro Pixel Processor and adjusted in Photoshop CS4.

NGC 281 - Pac Man Nebula

Data Acquisition:

11/14/2020 - Ha 5nm 40x300s

11/15/2020 - O3 3nm 25x300s

11/15/2020 - S2 3nm 24x300s

11/16/2020 - S2 3nm 36x300s

11/17/2020 - O3 3nm 38x300s

11/23/2020 - O3 3nm 48x300s

11/24/2020 - Ha 5nm 20x300s

11/25/2020 - S2 3nm 27x300s

11/26/2020 - Ha 5nm 20x300s

11/26/2020 - S2 3nm 24x300s

Total Integration 25hours and 50 minutes

iOptron CEM40EC

William Optics 1000mm Mortar Tri-pier

Askar FRA400 Quintuplet F/5.6

ZWOASI183MM-Pro

ZWO120MM Mini

ZWO OAG

ZWO ASIAir Pro

ZWO EAF

ZWO EFW

Chroma Filters

B9 Site in Miami

Stacked on AstroPixelProcessor

Processed on PixInsight and finished on Photoshop

20 Flats for each session

50 Dark Flats for each session

20 Darks

50 bias

It was clear last night so I was able to set up my C11, spend several hours setting up the mount and the scope, faffing about with focus and guiding and calibration frames and all that sort of guff.

Then I pointed at M92, a globular cluster of stars in the constellation of Hercules. A grand sight. For all of 15 minutes before the clouds rolled in. Oh well. At least I got enough data to build this image.

The cluster lies at a distance of 26,700 light years from Earth and has an estimated mass of up to 330,000 solar masses. With an estimated age of 14.2 billion years – almost the same age as the universe itself – M92 is one of the oldest clusters known and possibly the single oldest globular in the Milky Way

~~~~~

Telescope: Celestron C11-A XLT Schmidt Cassegrain OTA

Mount: SkyWatcher EQ6-R Pro

Controller: ZWO ASIAIR Plus

Main Camera: ZWO ASI533MC Pro at -10C

Filter: Optolong L-Pro filter 1.25"

Filter Wheel: ZWO EFW 5 Mini

Focal reducer: TS Optics 0.63x

Focuser: ZWO EAF

Guide Camera: ZWO ASI174MM Mini guidecam

Guide via: ZWO OAG

Stacked from:

Lights 15 at 60 seconds, gain 101, temp -10C

Darks 30 at 60 seconds, gain 101, temp -10C

Flats 30 at 220 ms, gain 101, temp -10C

Dark Flats 30 at 220ms gain 101 temp -10C

Bortle 4 sky.

Integrated the saved frames in Astro Pixel Processor.

Processed in PixInsight

Labels added in Photoshop CS4

ARP 286 is a small group of peculiar galaxies, NGC5560, 5566 and 5569 about 50-60 Mly away in Virgo.

They're gravitationally interacting and in particular the two spirals appear distorted.

189 minutes shot with the H294C and RC8, only very lightly processed in PI. Stacked in AstroPixelProcessor because DSS really didn't like the data - and who can blame it...

Heart Nebula (IC-1805), 07/10/2021

So on the second night of my last camping adventure to catch starlight I shot the Heart Nebula on a whim. Again, I have done this a few times before, but it was in a good location in the sky, and I wanted to try my new processing techniques on this one as well. This night went way easier than the night before and I was able to get some great data. It may be my favorite image to date and I’m pretty sure I will be making a big print for my wall.

The Heart Nebula is found in the constellation of Cassiopeia and is some 7500 light-years away. If you could see it with the naked eye, it would be almost ten times the size of the full moon in the night sky. The lower portion of the Heart Nebula has its own designation NGC 896 and is called the Fish Head Nebula.

Equipment:

RASA 8

iOptron GEM45

ZWO ASI294MC-Pro

ZWO Asiair Pro

Optolong L-eHhance filter

Details:

Location – Buck Creek Campground

Bortle Class 3

Gain 120

90 120-second Lights (3 hours total)

60 Darks

60 Bias

60 Flats

Astro Pixel Processor

StarNet++

Lightroom

Photoshop

#astrophotography #astronomy #comos #nightphotography #space #telescope #deepsky #asi294mcpro #amateurastronomy #backyardastronomy #asiair #asiairpro #rasa #celestron #ioptrongem45 #astropixelprocessor #optolong #deepskyobject #zwo #longexposurephotography #astronomyphotography #IC1805 #Heartlnebula #NGC896 #Fishheadnebula

Vdb-142 Elephant Trunk Nebula, nebulosa oscura nella Costellazione del Cefeo a 3.000 anni luce di distanza, galassia di appartenenza via Lattea.

Setup, Skywatcher Heq5 goto, Svbony 102ed, camera Asi2600mc pro, filtro Optolong L-extreme, camera guida Asi224mc teleguida 60/240

Light 47x600” tot. Integrazione : ore 7:50

Più Dark, Flat e DarkFlat.

Software di acquisizione Ekos su dispositivo Raspberry OS StellarMate.

Software di elaborazione AstroPixelProcessor e Pixinsight.

Bortle 7.2

Cieli sereni ✨✨✨

At the end of my stargazing session last night there was still a bit of dark sky remaining so I spent about three quarters of an hour on Messier 29.

M29, also known as NGC 6913, is sometimes called the Cooling Tower Cluster. It is a quite small, bright open cluster of stars just south of the central bright star Gamma Cygni in the constellation of Cygnus, the Swan.

I didn't have to spend hours capturing faint wisps of galactic spiral arms or fetching the folds and details of a nebula because the stars show up quickly against the dark sky.

~~~~~

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 IR Cut filter

Focuser: ZWO EAF

Guide Camera: ZWO ASI174MM Mini guidecam

Guide via: ZWO OAG

Stacked from:

Lights 23 at 120 seconds, gain 101, temp -10C

Darks 30 at 120 seconds, gain 101, temp -10C

Flats 30 at 1.08 seconds, gain 101, temp -10C

Dark Flats 30 at 1.08 seconds gain 101 temp -10C

Bortle 4 sky.

Integrated the saved frames in Astro Pixel Processor.

Processed in PixInsight

Added captions in Photoshop CS4

51 exposures, 300 sec. each; 14 hours total exposure in the light of hydrogen. GSO 8" f/8 RC OTA, ZWO ASI2600MM Pro cooled monochrome CMOS camera, SVBONY H-alpha 7nm filter, Losmandy GM811G mount, ZWO ASIAir Plus controller, auto-guided. Processed in Astro Pixel Processor, Lightroom, Photoshop

Halpha: 3,2h; RGB:10,0h

Processed in @astropixelprocessor, PS and LR.

Equipment:

Camera/Telescoop: ZWO ASI533MC pro, William optics Zenithstar 73 w. adj flattner 73a,

Guide: ZWO ASI120MM mini + WO uniguide 50mm

Mount: Ioptron CEM 25p

NGC 2237 (et al.), the Rosette Nebula, a vast cloud of mostly hydrogen in the constellation Monoceros in the light of hydrogen.

6 frame mosaic, 5hr, 18min total exposure, 8" f/8 RC, ASI2600MM mono camera, processed in AstroPixelProcessor and Lightroom.

Located in constellation Casseiopeia and is a part of th Heart nebula.

Picture consists of:

16x600sec lights

some Darkframes and flatframes.

This all stacked in astropixelprocessor and post-processed in PS.

Equipment:

Camera/Telescoop: ZWO ASI533MC pro, William optics Zenithstar 73 w. adj flattner 73a,

Guide: ZWO ASI120MM mini + WO uniguide 50mm

Mount: Ioptron CEM 25p

Filter:

STE Duobandfilter

REc51/ZWO ASI 183 MC/ASIAIR/Uv/IR Filter/Bortle 6

Only 8 minutes of integration!-Cloud interrupted sesssion.

Stacked in AstroPixelProcessor, processed in Pixinsight,

Stack

Dynamic Crop ( didnt have darks, so lots of ampglow !)

Gradient Correction

Blind Solver script from SetiAstro

Image solver

SPCC

Blur X

NoiseX

Histogram Stretch

Vibrance adjustment in Photoshop CS6

took longer to process than collect the data!

Eastern Veil Nebula (NGC6992), 07/06/2020

Spent the night dodging clouds and I was able to grabs this image in the hour or so of clear skies. This is another part of the same super nova remnant I shot a couple of weeks ago. I had much better data to play with but spent way too much time processing it until I was happy with the results. Happy Astrophotographer is happy.

Equipment:

RASA 8

CGEM-dx mount

ZWO ASI294MC-Pro

ZWO Asiair Pro

Optolong L-eHhance filter

Details:

Location – My back yard in Tacoma WA

Bortle Class 8

Gain 120

60 60-second Lights

60 Darks

60 Bias

60 Flats

Astro Pixel Processor

Lightroom

Photoshop

#astrophotography #astronomy #comos #nightphotography #space #telescope #deepsky #asi294mcpro #amateurastronomy #backyardastronomy #asiair #rasa #celestron #astropixelprocessor #optolong #telescope #astronomyphotography #deepskyobject #zwo #longexposurephotography #ngc6992 #veilnebula

M97 en M108, Uilnevel en Surfbord

GSO Newton telescope 800 / f4 on EQ6-R-Pro

Camera Canon Eos 80d not modified, filter : Optolong L-pro

20 April 2020, ISO 800, 16 x 468 sec (+darks,flats,bias)

25 maart 2022, ISO 800, 35 x 600 sec (+darks,bias,flats, darkflats)

Total exposure: 7u 55 min

AstroPixelProcessor + Photoshop

The Elephant's Trunk Nebula is a concentration of interstellar gas and dust within the much larger ionized gas region IC 1396 located in the constellation Cepheus about 2,400 light years away from Earth.

The central part of the nebula shown here is the dark, dense globule IC 1396A; it is commonly called the Elephant's Trunk nebula because of its appearance at visible light wavelengths, where there is a dark patch with a bright, sinuous rim. The bright rim is the surface of the dense cloud that is being illuminated and ionized by a very bright, massive star which lies near its centre.

This image is from integrating nearly two hours worth of two minute exposures using my ZenithStar 81 telescope. If there had not been so many clouds I would have been able to collect four or five hours of data which would have made the image even sharper and more detailed.

~~~~~

Telescope: William Optics ZenithStar 81 APO

Mount: SkyWatcher EQ6-R Pro

Controller: ZWO ASIAIR Plus 256G

Main Camera: ZWO ASI533MC Pro at -10C

Filter: Optolong L-eNhance filter

Focuser: ZWO EAF

Guide Camera: ZWO ASI174MM Mini guidecam

Guide via: ZWO OAG

Stacked from:

Lights 53 at 120 seconds, gain 101, temp -10C

Darks 30 at 120 seconds, gain 101, temp -10C

Flats 30 at 9seconds, gain 101, temp -10C

Dark Flats 30 at 9 seconds gain 101 temp -10C

Bortle 4 sky.

Integrated the saved frames in Astro Pixel Processor.

Processed in PixInsight

Added captions in Photoshop CS4

M81 en M82 Sigaar en Bodestelsel

GSO Newton telescope 800 / f4 on EQ6-R-Pro

Camera Canon Eos 80d not modified, filter : Optolong L-pro

23 en 24 Maart 2022, ISO 800, 39 x 600 sec

Total exposure: 6u 30 min

AstroPixelProcessor + Photoshop

The Horsehead Nebula (also known as Barnard 33) is a small dark nebula in the constellation Orion. The nebula is located just to the south of Alnitak, the easternmost star of Orion's Belt, and is part of the much larger Orion Molecular Cloud Complex. It appears within the southern region of the dense dust cloud known as Lynds 1630, along the edge of the much larger, active star-forming H II region called IC 434. which you can see in the bottom left corner of this image

The Horsehead Nebula is approximately 1,400 light-years from Earth. It is one of the most identifiable nebulae because of its resemblance to a horse's head.

Telescope: Celestron C11-A XLT Schmidt Cassegrain OTA with 0.63x flattener/reducer.

Mount: SkyWatcher EQ6-R Pro

Controller: ZWO ASIAIR Pro

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 12 at 300 seconds, gain 100, temp -10C

Darks 10 at 300 seconds, gain 100, temp -10C

Flat 30 at 80.0ms, gain 100, temp -10C

Dark Flat 30 at 80.0ms, gain 100, temp -10C

Bortle 4 sky.

Integrated the saved frames in Astro Pixel Processor and adjusted in Photoshop CS4.

NGC 2903 en NGC 2916

GSO Newton telescope 800 / f4 on EQ6-R-Pro

Camera Canon Eos 80d not modified, filter : Optolong L-pro

21 Febr 2021, ISO 800, 26 x 300 sec (+darks,flats,bias)

27 maart 2022, ISO 800, 13 x 600 sec (+darks,bias,flats, darkflats)

Total exposure: 4u 20 min

AstroPixelProcessor + Photoshop

Dirk Van Luyten – Zoersel – Belgium

The Fishhead nebula (NGC 896 / IC 795) is an emission nebula in the constellation Cassiopeia. A star forming region, the intense red colour comes from hydrogen photon emissions. Also visible in this nebula are dark lanes of obscuring dust. The nebula is approximately 6000 light years distant. The brighter region of the nebula is catalogued as NGC 896.

This nebula is a part of a much larger complex of nebulosity including the Heart Nebula (IC 1805).

Telescope: Celestron C11-A XLT Schmidt Cassegrain OTA

Mount: SkyWatcher EQ6-R Pro

Controller: ZWO ASIAIR Pro

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 23 at 300 seconds, gain 100, temp -10C

Darks 10 at 300 seconds, gain 100, temp -10C

Flat 30 at 80.0ms, gain 100, temp -10C

Dark Flat 30 at 80.0ms, gain 100, temp -10C

Bortle 4 sky.

Integrated the saved frames in Astro Pixel Processor and adjusted in Photoshop CS4.

GSO Newton telescope 800 / f4 on EQ6-R-Pro

Camera ZWO ASI294MC pro, met OAG, filter :Optolong LPro

25 sep 2022, Gain 120, at -20°, 19 x 300 sec (+darks,bias, flats)

Total exposure: 1u 35 min

AstroPixelProcessor + Photoshop

Dirk Van Luyten – Molezon – France

Used Nikon D7500 w/ a Nikkor 55-200 VR lens from 2009

3307 lights at 1 seconds each, and 300 Darks, 50 Flats, and 50 Biases

Used AstroPixelProcessor for Stacking, Background Calibration, and Star Color Calibration

Used Siril for Background Removal, Green Noise Removal, Color Calibration, Star Removal, Star Reconstruction, and Histogram stretching.

Used Topaz Photo AI for Denoising and Sharpening on the starless version.

Photo was taken outside my house in Dallas County, TX. Bortle Class 9

NGC-7635 la Bubble Nebula, nella costellazione di Cassiopea al confine con il Cefeo, dista a 11.000 anni luce dalla Terra, Galassia di appartenenza Via Lattea.

La sua caratteristica principale è una "bolla" di vuoto circondata da una nebulosa, visibile con potenti strumenti nella zona meridionale dell'oggetto, causata dal vento stellare della giovane stella centrale, di magnitudine 8,7.

In basso più a sx si trova l'ammasso aperto M-52.

Setup SkyWatcher eq5 goto, rifrattore Svbony SV503 80ed f/7 camera Asi2600 mc-pro, filtro Optolong L-Enhance, spianatore Tecnosky 1x, teleguida 60x240 camera guida Asi120mm

Light 69x600" più Dark Flat DarkFlat e Bias

Tot. Integrazione ore 11:30

Acquisizione: tramite dispositivo Raspberry, os Stellarmate, software Kstars.

Software: Somma tramite AstroPixelProcessor, elaborazione tramite Pixinsight.

Bortle 7.2

Cieli sereni.

From my October, 2019 trip to Cosmic Campground. New Mexico. 30 x 3 minute exposures with ASI294 camera; SV80 Access on Losmandy GM811G mount. Processed with Astropixelprocessor with tweaks from Startools and ACDSee.

Compare with the image from earlier this summer with a different camera (Olympus OMD-EM1 Mark ii). The ASI pretty well blows the Olympus away--not surprisingly, because the ASI is a dedicated astrocamera and the Oly isn't.

Ha 5nm - About 10 hours

S2 3nm - About 9:5 hours

Channel combination

R = 0.7*Ha + 0.3*S2

G = Faux Hb

B = Faux Hb

Faux Hb = 0.3*Ha

iOptron CEM40EC

William Optics 1000mm Mortar Tri-pier

Askar FRA400 Quintuplet F/5.6

ZWOASI183MM-Pro

ZWO120MM Mini

ZWO OAG

ZWO ASIAir Pro

ZWO EAF

ZWO EFW

Chroma Filters

B9 Site in Miami

Stacked on AstroPixelProcessor

Processed on PixInsight

20 Flats for each session

50 Dark Flats for each session

20 Darks

50 bias

IC1805 is part of a large complex of nebulosity in the constellation of Cassiopeia. The name Heart Nebula clearly comes from its shape. It is about 7500 light years away. The open cluster of stars in the centre is catalogued as Melotte 15. The red colour of the Heart Nebula is driven by the radiation from Melotte 15. This cluster contains a few bright stars nearly 50 times the mass of our Sun.

It was a clear night last night and this image was from thee and a half hours observation with my ZenithStar 81 telescope.

In this picture are: Heart Nebula, LBN 655, LDN 1366, LBN 648, LBN 650, LBN 647, LDN 1369, LDN 1367, LDN 1372, LDN 1368, LDN 1364, CL TOMBAUGH 4, LDN 1361, LDN 1363, LDN 1365, LDN 1371, CED 7 and LDN 1362

~~~~~

Telescope: William Optics ZenithStar 81 APO

Mount: SkyWatcher EQ6-R Pro

Controller: ZWO ASIAIR Plus 256G

Main Camera: ZWO ASI533MC Pro at -10C

Filter: Optolong L-eNhance filter

Focuser: ZWO EAF

Guide Camera: ZWO ASI174MM Mini guidecam

Guide via: ZWO OAG

Stacked from:

Lights 68 at 180 seconds, gain 101, temp -10C

Darks 30 at 180 seconds, gain 101, temp -10C

Flats 30 at 14.6 seconds, gain 101, temp -10C

Dark Flats 30 at 14.6 seconds gain 101 temp -10C

Bortle 4 sky.

Integrated the saved frames in Astro Pixel Processor.

Processed in PixInsight

Added captions in Photoshop CS4

Canon 1100D Fullspectrum (astronomik L filter uv/ir cut) Tecnosky 70/420 ED 1X; Orion Starshot Autoguider; Skywatcher AZEQ5

ISO 1600 - Exp: 9h (90*6'); Darks & Flats & Bias

APP + PS (Astronomy Tools; Tonalitymasks) + LR

Siena, 20-21/02/2020

GSO Newton telescope 800 / f4 on EQ6-R-Pro

Camera ZWO ASI294MC pro, met OAG, filter :Optolong LPro

30 sep 2022, Gain 120, at -20°, 2 x 60 sec en 14 x 300 sec (+darks,bias, flats)

Total exposure: 1u 02 min

AstroPixelProcessor + Photoshop

Dirk Van Luyten – Molezon – France

This is my second image of B33, the Horsehead Nebula; the earlier one can be found below.

This image can be thought of as a "closeup" of the Horsehead. It was obtained with a scope with a focal length of 1860 mm; the earlier pic was obtained with a scope with half that focal length, 900 mm.

The Horsehead is a vast and dense cloud of dust, behind which is a vast, red emission nebula., IC 434. To the lower left of the Horsehead is a blue reflection nebula known as NGC 2023. The Horsehead is about 1500 light years away.

All of these objects are part of a region known as the Orion B molecular cloud, a star-forming region in the Milky Way.

Tech data:

Tech data:

Vixen VMC260L scope with .62x reducer (~1860mm f/l)

Risingcam IMX571 camera 73 x 120 sec.

Avalon Linear mount

Processed with Astropixelprocessor, Startools, ACDSee, Topaz

Cosmic Campground, Mogollon, NM, March 1, 2022

Messier 66 (M66), the brightest and largest member of the Leo Triplet of galaxies, is an intermediate spiral galaxy located in Leo constellation. The galaxy lies at a distance of about 36 million light years from Earth and has an apparent magnitude of 8.9. It has the designation NGC 3627 in the New General Catalogue.

Messier 66 has a diameter of about 95,000 light years. It can be seen in the same field of view as its neighbours M65 and NGC 3628. M66 is separated from M65 by only 200,000 light years.

The Leo Triplet can be found between the stars Theta and Iota Leonis, or along the line from the bright star Denebola to Regulus, the brightest star in Leo.

In this picture M66 is the leftmost of the two Messier galaxies in the group.

The Leo Triplet is also known as the M66 Group, which consists of M66, M65, NGC 3628 and possibly two other galaxies. M66 is notable for its outstanding dark dust lanes and bright starburst regions along the spiral arms.

Gravitational interaction with the nearby galaxies Messier 65 and NGC 3628 has significantly affected M66. The galaxy’s past encounter with NGC 3628 has resulted in an extremely high central mass concentration, asymmetrical spiral arms and an interstellar cloud composed of neutral atomic hydrogen – removed from one of the galaxy’s spiral arms. As a result, the galaxy appears to have a conspicuous and unusual structure of spiral arms and dust lanes. The distorted, hooked spiral arms appear displaced above the plane of the galaxy’s disk.

Equipment Used

Telescope: William Optics Zenithstar 81 APO

Mount: SkyWatcher EQ6-R Pro

Controller: ZWO ASIAIR Plus

Main Camera: ZWO ASI533MC Pro at gain 101, temperature -10C

Filter: Optolong L-Pro filter

Focal reducer: William Optics 0.8x 2.00"

Focuser: ZWO EAF

Guide Camera: ZWO ASI290MM Mini guidecam

Guide Scope: William Optics 50mm

Stacked from:

Lights 25 at 300s, gain 101, temp -10C

Darks 30 at 300s, gain 101, temp -10C

Flats 30 at 850ms, gain 101, temp -10C

DarkFlats 30 at 850ms, gain 101 temp -10C

Bortle 4 sky.

Stacked in AstroPixelProcessor and adjusted in Photoshop CS4 and Topaz DeNoise AI