Telescopio: GSO RC14 F8

Camera Cmos: Player One Poseidon-M PRO

Montatura: IOptron CEM120EC

Guida Telescopio:PLAYER ONE FHD-OAG MAX Lodestar X2

Software: Voyager - PixInsight

Light: L 39X120S BIN 2X2 - R 24X120S BIN 2X2 -G 24X120S BIN 2X2 - B 24X120S BIN 2X2 - HA 20X300S BIN 2X2 - OIII 20X300S BIN 2X2 - 11 Dark 11 Flat 11 Bias

Filtri: Optolong L 50.8 – Optolong R 50.8 – Optolong G 50.8 – Optolong B 50.8 – Optolong HA 3NM 50.8 – Optolong OIII 3NM 50.8 – Optolong SII 3NM 50.8

Accessori: Pegasus Astro Ultimate Powerbox· Focheggiatore Elettronico FocusCube V2 Pegasus Astro

Data: 08-04-2025 10-04-2025 11-04-2025

Luogo di Ripresa: Gualdo Tadino(PG) Italia

Luna: 85% 96% 98%

Technical Information:

Telescope: AIRY APO 130T Reduced f/5.3

Mount: NEQ6-Pro

Camera : QHY168C -- GAIN:10 ; OFFSET:32 -- -20°C

Filter: Optolong 2" L-Pro

Frames: RGGB 150 x 240s

Total Integration: 10 Hours

Software: SGP – PHD2 – PixInsight – CS6

Location: Noventa di Piave (Venice) 4 meter above sea level – ITALY

Environment Temperature: About 15°C

Relative Humidity: 88%

Date: 19.04.18 - 20.04.18 - 21.04.18

NOTE: The image was acquired from a very polluted sky ( Red Zone - where I live ).

I am very happy with this result that I could get following (as always) Terry Hancock's instructions ! Thank you, teacher :)

I think that I could have arrived at the same result with 7/8 hours of exposure time, instead of 10.

As I did in the previous image, I wanted to propose the same NGC4565 in another position.

CCD Moravian G2 8300 - 135mm Samyang lens f/2 @f/3.5

Mount: AP GTO1200

Frames: RGB: 5X600 sec. each - H Alpha 7nm 15X600 sec. Bin1 -20°

Filters: 31mm unmounted Optolong

Autoguider: ZWO ASI290MM mini on ZWO 30 F/4, Phd guiding

Processing: Pixinsight, Photoshop

Equipo Principal: StellarVue SXV80-3SB + SFFX1 Flattener + QHY183M + ZWO EAF + ZWO 2" FD + SW EQ6-R-Pro

Equipo guía: QHY5iii-462c (UV/IR cut filter) + ZWO OAG

*Gain 10, -15 º C, Ha 7nm 2" Optolong, 88x300"

*Gain 10, -15 º C, Oiii-CCD 6.5 nm 2" Optolong, 85x300"

*Gain 10, -15 º C, Sii-CCD 6.5 nm 2" Baader, 50x300"

Tiempo total de integración: 18.6 h

100 Darks

50 Flats por filtro

50 Dark-Flats por filtro

Polar Align: SharpCap 4

Adquisición: SGP 3.1

Procesado: Pixinsight 1.9.3, PS, RC Astro plugins

Dedicada a mi perrita Canela, quien falleció hace 1 año.

Dedicated to mi dog Canela, who past away a year ago.

Discovered in December of 1948 by Moniru Honda, this comet is named after Minoru Honda, Antonín Mrkos, and Ľudmila Pajdušáková. The short period comet

Whale Galaxy and Hockey stick Galaxy visible at the top.

Camera: ILCE7S JTW modified

Optolong L-PRO MAX Luminosity Filter

Scope: Evostar 80ED DS-Pro w/ field flattener

mount: HEQ5Pro

Unguided

6 frames 1m9s each = 7m55s total exposure

Optolong L-Pro Deep Sky Clip filter

IC405 Flaming Star Nebula in SHO/HST processed colours. Scope: TSAPO65Q with TeleVue NVR-1073 0.8x Reducer. Camera: ZWO ASI294MC Pro with Optolong L-Pro. Mount: StellarDrive 6R. Guide: SkyWatcher EvoGuide with Altair 130M. 5x5mins Ha, 10x5minx Oiii, 15x5Mins Sii. Combined and Processed in APP. Finished in Adobe CC.

The Horsehead Nebula or Barnard 33, is a small dark nebula in the located in the constellation of Orion. The nebula is located close to the star Alnitak, far left in the middle of the image, in 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. It lies at a distance of around 1,375 light years.

A quick test to try out my Esprit 150mm refractor. Haven't used it for ages and found the inside of the objective to be very dirty so have tried my best to clean it.

EQ6-R-PRO

Esprit 150mm APO

QHY294C

Optolong L-eNhance filter

18 x 600sec subs

Processed using Pixinsight and Photoshop 6.

Before wrapping up this imaging session, I thought I'd try imaging the Moon with an H-alpha filter. That lengthened the exposure for each frame of the SER files, but narrowed the bandwidth to 7 nm. This is from two separate stacks using the best 19% of each stack. Processed in AutoStakkert, PixInsight, and Photoshop.

Clavius dominates the view here. There are even some interesting "runoff" featuers on one of the slopes of Rutherfurd crater (on the left, inside of Clavius). Above Clavius (and farther south on the Moon) is the crater Blancanus. The crater Scheiner is partially cut off in the top right corner of the pic.

The Moon was drifting a lot in the field of view while shooting this, so I omitted the areas that didn't get enough coverage from the frames included in those stacks.

Telescope: Celestron Edge HD 925

Camera: ZWO ASI 120MM

ZWO EFW with Optolong H-alpha filter and 2x Barlow

This is what I have slowly been working towards. This is a Narrow Band Photo of the Nebula But a RGB set of stars on top. RGB stars are in effect the normal stars you get when you take a photo with a one shot colour camera or a DSLR. the Narrow Band stars all very different colours whereas RGB stars look more natural. The other thing you can see the rainbow effect that the solid front spider gives to the flares on the star.

The key is to have all the files stack together so they are the same size work on the narrow band throw away the stars. Work on the RGB throw away the background combine the Narrowband Nebula and the RGB stars to make the final photos.

This has used all the filters to make the two photos to make one. The big advantage of this is the amount of detail that the Narrow band filters bring out than you get with a One shot colour camera. Is it all worth it on my screen it sure is but I also have more days clear than most to be able to do it.

QHY 183M -10c

QHYCFW 7 Filter wheel Seven ZWO 36mm unmounted astro filters.

Ha O3 110 shots each filter 5 min over 4 night.

RGB 40 shots each filter 2 min each over one night.

MeLE Mini PC

Pegasus Astro Pocket Mini power box

Prima Luce Essato Focus

Optolong LeNhance filter,

Skywatcher 200 F4 PREMIUM PHOTO QUATTRO REFLECTOR OTA

Skywatcher F4 Aplanatic Coma Corrector

Skywatcher NEQ 6 Pro Hypertuned

SVbony 50MM Guide scope

QHY5L-II-M Guide camera

Guided PHD2, Nina

Pixinsight, Ps

I had totally overlooked processing this image as I didn't think it was that worthy of processing with only 8 x 5 min exposures each channel LRGB.

As this was to be one of the last images I captured from my former backyard observatory in Michigan using the new QHY16200 Mono CCD I decided to process it anyhow. It really is a wonderful target and one that I hope to capture again next season from my new home at www.grandmesaobservatory.com in Colorado.

The main feature of this image just below center is the Unbarred Spiral Galaxy NGC7331 the brightest member of the NGC7331 Group Of Galaxies and otherwise known as Caldwell 30 in the constellation Pegasus lying at a distance of approximately 40 Million Light Years, other members of this group also below the center of the image are labelled in the annotated version of the image include NGC7340 at 294 Million Light Years, NGC7337 at 348 Million Light Years, NGC7336 at 365 Million Light Years and NGC7335 at 332 Million Light Years distant, more galaxies belonging to the PGC catalogue are identified here with blue labelling.

Annotated view here www.flickr.com/photos/terryhancock/32640005101/in/datepos...

Total Integration time 2 hours and 40 minutes.

Technical Information

Location: DownUnderObservatory, Fremont, MI

Captured September 3rd 2016

Size: 4540x3630 pixels

QHY16200A monochrome CCD cooled to -20C

QHYOAG-M Off Axis Guider

LUM 40 min, 8 x 300 sec 2x2

RGB 120 min, 8 x 300 sec each 2x2

Filters by Optolong

Astro-Tech AT12RC with AP 2.7" Reducer @F6.2

Paramount GT-1100S German Equatorial Mount

Image Acquisition Maxim DL

Pre Processing and annotation in Pixinsight

Post Processing Photoshop CS6

Camera Asi 071

Filtre dual-band

Apo RedCat 51 f4.9

Guidage chercheur SW et Asi 174

Monture EM-200 Temma-2Z

29x300 sec (2h25)

51 DOF

Echelle de Bortle: 6-7

NGC 7380 - The Wizard Nebula

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I appear to have figured out how to edit the stars a bit better. Or at least reduce their all invading presence.

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Still more to do , but this is great for now. Pretty much one year since I got my "starter" kit from @firstlightoptics Aka, I could have bought a nice new bike.

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132*180s images

Askar 71f at 490mm

ZWO ASI533MC

Optolong eNhance filter

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#astropho #astrophotography_ #astrophotography #astrophotographer #deepskyimaging #deepskyobject

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@bbcskyatnightmag

Messier 15 Global Cluster in the Pegasus

Messier 15 or M15 (also designated NGC 7078) is a globular cluster in the constellation Pegasus. It was discovered by Jean-Dominique Maraldi in 1746 and included in Charles Messier's catalogue of comet-like objects in 1764. At an estimated 12.0 billion years old, it is one of the oldest known globular clusters.

M 15 is about 33,600 light-years from Earth, and 175 light-years in diameter. It has an absolute magnitude of −9.2, which translates to a total luminosity of 360,000 times that of the Sun. Messier 15 is one of the most densely packed globulars known in the Milky Way galaxy. (Wikipedia.org)

Technical Information for This Image

This image was taken with a William Optics Zenithstar 81 APO Doublet Refractor on an iOptron CEM25P mount. The main imaging camera, attached to the prime focus of the telescope was a ZWO ASI294MC Pro cooled camera which was cooled to -5C. An Optolong L-Pro filter was used on the camera. The exposures were 26x60 seconds at Bin 1x1. The gain was set to 120. All the settings for polar alignment, acquisition, cooling, exposures, guiding, previewing, and pretty much everything else, was done a ZWO ASIAIR Pro. This little box replaces my laptop computer, three software programs, and adds plate solving, and makes the whole night so much easier. Auto guiding was done using a William Optics 50mm guide scope with a 200mm FL. Attached to the guide scope was a ZWO ASI120MC Mini camera which was connected to the ASIAIR Pro. Capturing was done with the ASIAIR Pro while I sat in the car at a dark sky site and watched and controlled the entire process wirelessly over an iPad using the ASIAIR app. Post processing was done with Pixinsight software with finishing touches put in using Adobe Photoshop Creative Cloud.

Nome: Galáxias Antenas - NGC 4038 e NGC 4039

Tipo: Galáxias espirais barradas (SBm) [1]

Distância: ~68.000.000 anos-luz [2]

Magnitude (filtro V): 10,20 [1]

Constelação: Corvo (Corvus)

Esta imagem mostra a colisão das duas Galáxias Antenas. Durante o curso da colisão, bilhões de estrelas serão formadas. As regiões mais brilhantes e compactas desses berçários estelares são chamadas de superaglomerados de estrelas.[3]

As duas galáxias espirais começaram a interagir há algumas centenas de milhões de anos atrás, tornando as galáxias das Antenas um dos exemplos mais próximos e mais jovens de um par de galáxias em colisão. As manchas alaranjadas à esquerda e à direita no centro da galáxia são os dois núcleos das galáxias originais e consistem principalmente em estrelas antigas entrecruzadas por filamentos de poeira, que possuem tonalidades marrons na imagem. As regiões azuladas são formações de estrelas cercadas por gás hidrogênio brilhante, aparecendo na imagem em rosa e vermelho.[3]

Com a idade que data os aglomerados na imagem, os astrônomos descobrem que apenas 10% dos superaglomerados de estrelas recém-formados nas Antenas sobreviverão além dos primeiros 10 milhões de anos. A grande maioria dos superaglomerados de estrelas formados durante essa interação se dispersará, com as estrelas individuais se tornando parte do plano de fundo suave da galáxia. No entanto, acredita-se que cerca de cem dos aglomerados mais maciços sobreviverão para formar aglomerados globulares regulares, semelhantes aos aglomerados globulares encontrados em nossa própria galáxia da Via Láctea. As Galáxias Antenas recebem esse nome por causa dos longos "braços" parecidos com antenas que se estendem para longe dos núcleos das duas galáxias, mais bem vistos pelos telescópios terrestres. Essas "caudas de maré" foram formadas durante o encontro inicial das galáxias cerca de 200 a 300 milhões de anos atrás. Eles nos dão uma prévia do que pode acontecer quando nossa galáxia Via Láctea colidir com a vizinha Andrômeda em vários bilhões de anos.[3]

Fonte:

[1] - HyperLeda - Database for physics of galaxies - leda.univ-lyon1.fr/ledacat.cgi?o=ngc6744

[2] - The Tip of the Red Giant Branch Distances to Type Ia Supernova Host Galaxies. III. NGC 4038/39 and NGC 5584, Jang, In Sung; Lee, Myung Gyoon - The Astrophysical Journal

[3] - Nasa - www.nasa.gov/multimedia/imagegallery/image_feature_1086.html

Esta imagem foi registrada durante os dias 07, 08 e 20 de junho de 2019 na zona rural de Munhoz - Minas Gerais - Brasil. Local com escala de Bortle 4.

Dados técnicos:

Gain 139, offset 10, Bin 1x1, temperatura da câmera -20°C, exposição total de 7h01m (129 subs), darks (40), flats (180) e darks flats (80) aplicados.

Filtros:

H-Alpha 17 x 300s

Luminância (IR/UV Cut) 60 x 180s

Vermelho 21 x 180s

Verde 17 x 180s

Azul 14 x 180s

Equipamento:

- Montagem Equatorial Orion Atlas EQ-G

- Telescópio GSO Ritchey-Chretien 8" F8 Fibra de Carbono

- Câmera ZWO ASI1600MM Cooled

- Redutor focal Astro-Physics 67 CCDT

- Auto guiagem com câmera ZWO ASI120MM em OAG

- Roda de Filtros ZWO 8 posições

- Filtros Optolong 1,25" H-Alpha 7nm, Luminance, Red, Green, Blue

Softwares

- Captura: APT - Astro Photography Tool 3.50

- Processamento: PixInsight 1.8 e Adobe Photoshop CS5

- Guiagem: PHD2

- Controle: EQMOD e SkyTechX

Name: Antennae Galaxies - NGC 4038 e NGC 4039

Type: Spiral barred galaxies (SBm) [1]

Distance: ~68.000.000 light-years [2]

Magnitude (filtro V): 10,20 [1]

Constellation: Corvus

This image shows a merging pair of galaxies. During the course of the collision, billions of stars will be formed. The brightest and most compact of these star birth regions are called super star clusters.[3]

The two spiral galaxies started to interact a few hundred million years ago, making the Antennae galaxies one of the nearest and youngest examples of a pair of colliding galaxies. The orange blobs to the left and right of image center are the two cores of the original galaxies and consist mainly of old stars criss-crossed by filaments of dust, which appears brown in the image. The two galaxies are dotted with brilliant blue star-forming regions surrounded by glowing hydrogen gas, appearing in the image in pink and red.[3]

By age dating the clusters in the image, astronomers find that only about 10 percent of the newly formed super star clusters in the Antennae will survive beyond the first 10 million years. The vast majority of the super star clusters formed during this interaction will disperse, with the individual stars becoming part of the smooth background of the galaxy. It is however believed that about a hundred of the most massive clusters will survive to form regular globular clusters, similar to the globular clusters found in our own Milky Way galaxy. The Antennae galaxies take their name from the long antenna-like "arms" extending far out from the nuclei of the two galaxies, best seen by ground-based telescopes. These "tidal tails" were formed during the initial encounter of the galaxies some 200 to 300 million years ago. They give us a preview of what may happen when our Milky Way galaxy collides with the neighboring Andromeda galaxy in several billion years.[3]

Source:

[1] - HyperLeda - Database for physics of galaxies - leda.univ-lyon1.fr/ledacat.cgi?o=ngc6744

[2] - The Tip of the Red Giant Branch Distances to Type Ia Supernova Host Galaxies. III. NGC 4038/39 and NGC 5584, Jang, In Sung; Lee, Myung Gyoon - The Astrophysical Journal

[3] - Nasa - www.nasa.gov/multimedia/imagegallery/image_feature_1086.html

This image was captured at days 7th, 8th and 20th June 2019 in rural zone of Munhoz - Minas Gerais - Brazil. Bortle Scale 4.

Technical data:

Gain 139, offset 10, Bin 1x1, sensor's temperature -20°C, total exposition of de 7h01m (129 subs), darks (40), flats (180) and darks flats (80) applied.

Filters:

H-Alpha 17 x 300s

Luminance (IR/UV Cut) 60 x 180s

Red 21 x 180s

Green 17 x 180s

Blue 14 x 180s

Equipments:

- Equatorial Mount Orion Atlas EQ-G

- GSO Ritchey-Chretien Telescope 8" F8 Carbon Fiber

- ZWO ASI1600MM Cooled

- Focal reducer Astro-Physics 67 CCDT

- Guided with ZWO ASI120MM using OAG

- ZWO Filter Wheel (8 x 1.25")

- Filter Optolong 1.25" H-Alpha 7nm

- Filter Optolong 1.25" Luminance

- Filter Optolong 1,25" Red

- Filter Optolong 1,25" Green

- Filter Optolong 1,25" Blue

Softwares

- Capture: APT - Astro Photography Tool 3.50

- Processing: PixInsight 1.8 and Adobe Photoshop CS5

- Guiding: PHD2

- Control: EQMOD and SkyTechX

⭐️⭐️SH2-200⭐️⭐️

Sh2-200 est une nébuleuse planétaire dans la constellation de Cassiopée, le grand W dans le ciel.

20h42min de temps de pose à Dounoux, dans les Vosges.

astrob.in/hqxhgy/J/

Elle est située dans la partie orientale de la constellation, à environ 3 ° nord-est de la grande nébuleuse IC 1848. La période la plus propice à son observation dans le ciel du soir tombe entre les mois de septembre et février et elle est considérablement facilitée pour les observateurs situés dans les régions de l'hémisphère boréal, où elle est circumpolaire jusqu'aux régions tempérées chaudes.

C'est un objet mal étudié, qui a été initialement catalogué comme une région HII. Ce n'est qu'en 1983 que sa nature de nébuleuse planétaire a été reconnue, dans une étude de quelques nébuleuses d'apparence inhabituelle. Sa distance a été estimée à environ 1 100 pc (∼3 590 al), sur le bord extérieur du bras d'Orion

Instrument Optique D'Imagerie

TS-Optics N-AG12 Newtonian Astrograph

Caméras D'Imagerie

ZWO ASI6200MM Pro

Montures

Sky-Watcher EQ8-R Pro

Accessoires

Primaluce Lab SESTO SENSO 2 · ZWO EFW 7 x 2″ · ZWO OAG M68

Images:

Optolong Blue 2": 39×180,″(1h 57′)

Optolong Green 2": 47×180,″(2h 21′)

Optolong H-Alpha 3nm 2": 29×600,″(4h 50′)

Optolong OIII 3nm 2": 58×600,″(9h 40′)

Optolong Red 2": 38×180,″(1h 54′)

Acquisition:

20h 42′

[FR version above / EN version below]

Bienvenue en Californie !

La nébuleuse Californie (NGC 1499), ça faisait vraiment longtemps que je voulais la faire, depuis que j'avais réussi à vaguement la sortir en même temps que les pléiades (ma cible de choix de l'époque) alors que je m'essayais à l'astrophotographie avec un Lumix G7 non défiltré et un vieil objectif Canon 50 mm f/1.4 (de qualité ceci dit). Cette fois, ça y est ! Profitant d'une superbe nuit étoilée sans lune à l'occasion d'un bivouac dans nos champs d'oliviers près de Montfort dans les Alpes de Haute Provence, je l'ai photographiée entre 20h14 et 5h36 du matin. Ce sont 600 photos de 45 secondes de pose unitaire que j'ai ainsi gardée (parmi 676, ce qui est excellent vu le vent très fort qui a soufflé toute la nuit, menaçant sans cesse de faire trembler ma monture ou mon appareil ; finalement, lester avec un énorme caillou, ça marche !).

La photo (ici annotée : nova.astrometry.net/annotated_full/7379180 ) monte donc une nébuleuse en émission (gaz ionisés dont l'excitation par la lumière des étoiles proches provoque la réémission de lumière à de plus grandes longueurs d'ondes, principalement dans la raie alpha de l'hydrogène dans le cas de NGC 1499) de 70 années lumières (AL) de long, dont la forme évoque celle de l'état qui fut tout de même dirigé par un Terminator. Cette nébuleuse est distante de 1500 AL ; la lumière qui nous parvient aujourd'hui et que j'ai fixée sur mon appareil est partie de là bas l'année où le sanctuaire de Zeus à Olympie subissait un terrible tremblement de terre le ravageant. Dans le ciel, elle est énorme : elle occupe la même surface que 5 fois la pleine Lune, dans sa longueur, et 1 fois dans sa largeur. Elle n'est cependant pas observable à l'œil nu, sa magnitude se situant aux alentours de 6.

Sur cette même photo, on voit qu'elle se situe dans la constellation de Persée, et se trouve juste à côté d'une étoile juste visible à l'œil nu, xi persei (Menkib). C'est cette étoile de 40 masses solaires, très chaude (température de surface : 37000 Kelvins) qui éclaire et échauffe les gaz de la nébuleuse. Cette dernière se situe aussi à proximité immédiate de 2 autres étoiles bien visibles, zeta persei (Atik) et omikron persei (Alatik). A sa gauche, non visible ici, se trouve une 4ème étoile très brillante, epsilon persei. Ces 4 étoiles permettent de repérer aisément sa position et son orientation et ainsi de la cibler pour faire de belles photos.

Il y a d'autres objets d'intérêt sur cette photo, notamment IC 348, une région de formation d'étoiles qui entoure omikron persei. Ce nuage distant de 1000 AL abrite un amas de 400 étoiles jeunes (2 millions d'années).

L'annotation de la photo par nova.astrometry.net fait ressortir une galaxie lenticulaire (NGC 1465) effectivement visible sur la photo. C'est une galaxie distante de 188 millions d'AL et mesurant 105000 AL de diamètre (un peu moins que la voie lactée).

Quatre nébuleuses planétaires (IC351, IC2003, IC2005 et IC2027 (à peine visible)) ont aussi été acquises, bien qu'elles ne s'apparentent là qu'à des points, comme des étoiles.

Pour la technique, j'ai travaillé avec mon Canon 1200D dp Photomax, un filtre Optolong L-Enhance, un objectif Samyang 135 mm f/1.4 ouvert @f/2.8, iso 800, poses de 45 sec espacées de 5 sec. Le suivi était assuré par une Star Adventurer 2i. J'ai fait 676 photos et j'en ai gardé 600, soit 7h30 de cumul. J'ai fait 40/40/40 DOF.

Pour le traitement, j'ai galéré vu la quantité de photo, les traitements lourds tels l'alignement requérant plus de 120 Go de disque ! Il m'a fallu au total 15h de traitement et post-traitement. J'ai utilisé Siril pour tout le traitement. Sous Siril, j'ai réalisé d'une part un empilement des photos en couleurs RGB (RVB = Rouge, Vert, Bleu) (voir la première version de cette photo: flic.kr/p/2o1XZuk ), d'autre part une extraction Ha et OIII (Hydrogène alpha dans les rouges, Oxygène III pour les bleus et verts) puis recombinaison pour en faire une image HOO.

Pour le post-traitement, j'ai réalisé une starless (image sans étoiles) avec StarNet V2 de l'image RGB et une autre de l'image HOO. J'ai ensuite utilisé Gimp pour le post-traitement. J'ai extrait par soustraction les étoiles de l'images RGB. Ensuite, j'ai utilisé plusieurs calques pour recombiner les 2 starless (RGB et HOO), la version full RGB et les étoiles seules, la photo utilisant plusieurs duplicatas de ces images pour renforcer certaines ombres ou couleurs.

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Welcome to California!

The California Nebula (NGC 1499) was something I had been wanting to capture for a long time, ever since I managed to vaguely capture it along with the Pleiades (my target of choice at the time) while experimenting with astrophotography using an unmodified Lumix G7 and an old Canon 50mm f/1.4 lens (which was of good quality, by the way). But this time, I finally did it! Taking advantage of a stunning moonless night while bivouacking in our olive fields near Montfort in the Alpes de Haute Provence (South of France), I photographed it from 8:14 p.m. to 5:36 a.m. I kept 600 photos out of the 676 taken, which is excellent considering the very strong wind that blew all night, constantly threatening to shake my mount or my camera; eventually, I managed to stabilize it with a huge stone.

The annotated photo can be found here: nova.astrometry.net/annotated_full/7379180

NGC 1499 is an emission nebula, where ionized gases, excited by the light of nearby stars, re-emit light at longer wavelengths, mainly in the alpha band of hydrogen in the case of NGC 1499. The nebula spans 70 light-years in length and its shape evokes that of the US state that was once governed by a Terminator. It is located 1500 light-years away, and the light captured by my camera began its journey the same year when the sanctuary of Zeus in Olympia was devastated by a terrible earthquake. In the sky, the nebula is enormous, occupying the same surface area as 5 full moons in length and 1 full moon in width. However, it is not visible to the naked eye, as its magnitude is around 6 (244 times less bright than the star Vega).

The nebula is located in the constellation of Perseus and is situated right next to a star that is barely visible to the naked eye, Xi Persei (Menkib). This star has a mass of 40 solar masses and is very hot, with a surface temperature of 37,000 Kelvin. It illuminates and heats the gases of the nebula. The nebula is also in close proximity to 2 other visible stars, Zeta Persei (Atik) and Omicron Persei (Alatik). A fourth very bright star, Epsilon Persei, is to the left, but it is not visible in this photo. These 4 stars make it easy to determine the position and orientation of the nebula and target it for beautiful photos.

In addition to NGC 1499, there are other objects of interest in this photo, including IC 348, a star-forming region that surrounds Omicron Persei (upper right of the photo). This distant cloud, located 1000 light-years away, houses a cluster of 400 young stars (only 2 million years old).

For the technical details, I used my Canon 1200D with a partially defiltered Photomax, an Optolong L-Enhance filter, a Samyang 135mm f/1.4 lens opened at f/2.8, ISO 800, and exposures of 45 seconds (with 5 seconds in between). I used a Star Adventurer 2i for tracking. Out of the 676 photos taken, I kept 600, resulting in a total of 7 hours and 30 minutes of cumulative exposure. I used 40/40/40 darks, offsets, and flats for preprocessing.

The processing was challenging due to the large number of photos, and heavy treatments such as alignment requiring over 120 GB of disk space! It took a total of 15 hours for processing and post-processing. I used Siril for all the processing. Under Siril, I stacked the RGB color photos (see the first version of this photo here: flic.kr/p/2o1XZuk), and separately extracted Ha and OIII (hydrogen alpha in the reds, oxygen III for the blues and greens) and recombined them to create an HOO image.

For post-processing, I generated two starless images (using StarNet V2), one for the RGB image and another for the HOO image. I then used Gimp for post-processing. I extracted the stars from the RGB images by subtraction. I used several layers to recombine the two starless images (RGB and HOO), the full RGB version, and the stars alone, utilizing multiple duplicates of these images to enhance certain shadows or colors.

M31 - 57 x 240s and 2 x 900s over several nights in November 2022. SkyWatcher Esprit 100ED, ZWO ASI294MC Pro cooled to -10, Optolong L-Pro filter, Astro Pixel Processor, StarTools and GIMP.

M101 is a large face-on spiral galaxy located 22 million kight-years away in the cinstellation of Ursa Major. At magnitude +7.9, it can be glimpsed in binoculars or small telescopes from dark sites. However, this galaxy suffers from low surface brightness and in bad seeing conditions or light polluted areas is sometimes difficult to spot even with 200mm (8-inch) scopes. M101 is best seen from the Northern Hemisphere during the months of March, April and May.

M101 is also known as the Pinwheel galaxy and was discovered by Pierre Méchain on March 27, 1781. He described it as "nebula without star, very obscure and pretty large, 6' to 7' in diameter, between the left hand of Boötes and the tail of the great Bear." He communicated this to Charles Messier, who verified its position and then included it in his catalogue as one of the final entries.

Locating the part of sky where M101 is positioned is easy, since it's close to the handle of the bowl that forms the Plough or Big Dipper asterism of Ursa Major. The Pinwheel galaxy is located at one corner of an equatorial triangle formed with second magnitude stars Mizar (ζ UMa - mag. +2.2) and Alkaid (η UMa - mag. +1.8). M101 is 5.5 degrees east of Mizar (the celebrated naked eye double star) and 5.5 degrees northeast of Alkaid.

This image was taken over 5 nights in early to mid March 2020. its a combination of over 32 hours of total exposure time using Hydrogen Alpha and LRGB filters.

astrob.in/7xn45n/q/

LBN 472 si individua nella costellazione di Cefeo , ha una vaga somiglianza come nebulosità e colori alle Pleiadi , la stella che si vede al centro è 6 Cepheus di magnitudine visuale 5.19 e dista circa 1079 anni luce , Telescopio Skywatcher Newton 200/1000 @950, camera Qhy 294c pro Mont. Eq6r pro light 216 da 120" tot. 7h e 12 minuti filtro utilizzato Optolong Astronomy Filter L-QEF software di acquisizione N.I.N.A.

Somma DSS elab. PixInsight e Photoshop.

SQM 19.48

Ripresa il 15 e 16 Luglio 2024

Banda estrecha con DSLR y los filtros de Optolong Astronomy Filter

Combinación Paleta Hubble SHO

IC1805 and IC1848 - The Heart and Soul Nebulae

Canon 6D + ImagingStar71

15x900" H - ISO3200

5 x 900" O - ISO 3200

5 x 900" S - ISO 3200

Narrow band with DSLR and Optolong Astronomy Filter

Hubble Palette SHO Combination

IC1805 and IC1848 - The Heart and Soul Nebulae

Canon 6D + ImagingStar71

15x900 " H - ISO3200

5 x 900 " O - ISO 3200

5 x 900 " S - ISO 3200

#optolong #astronomy #astrophotography #skywatcher #EQ6r #narrowbanding #canon #astronomy #teamcanon #findyourpark #nationalpark #stars #constellation #galaxy #milkyway #skyscapejournal #longexposure #lpro #core #dso #space #darksky #idadarksky #photoshop #lightroom #adobe #nebula #nebulae #deepspace #stars #stargazing #galaxy #galaxies #nasabeyond #cosmos #space #spaceart #outerspace #particles #physics #universe #astronomy #astronomie #animation #nightsky #vfx #vfxartist #houdini #3dartist #skywatcher #science #render #digitalart #artofvisuals #inspiration #creativeart

Heart and Soul nebulae in the constellation of Cassiopeia, IC1805 and IC1848.

Tamron 100-400 lens, ASI294MC Pro, Optolong L-eNhance filter

Shot from the red zone suburbs, Bortle 6 skies

33 subs @ 300s, 20 darks , 20 Flats

Orion Short Tube 80

QHY5-II Mono

Barlow 2x

Prisma de Herschel (by Ledezma Optics)

SvBony ND3 + Optolong UV/IR + Baader Solar Continuum

Celestron AVX

Frames: 1000 (Stack 15%)

Captura: Firecapture

Procesado: Autostakkert + Registax + Pixinsight 1.8

Guillermo Cervantes Mosqueda

Observatorio Astronómico Altaïr

Poncitlán Jalisco México

Telescope: WO ZenithStar 81 Refractor

Mount: Losmandy GM811G

Imaging Camera: ZWO ASI 2600MC Pro

Filter: Optolong L-Extreme Filter

Site: Elk Grove, California, USA

Calibration Files: None

Guiding: ZWO ASI 174mm mini/Orion 60mm Guidescope/PHD2

No of Frames: 76

Sub Exposure Time: 240sec

Integration Time: 5h 4m

Bortle Zone: Class 6

Date Taken: Dec 9, 2021

Telescopio: GSO RC14 F8

Camera Cmos: Player One Poseidon-M PRO

Montatura: IOptron CEM120EC

Guida Telescopio:PLAYER ONE FHD-OAG MAX Lodestar X2

Software: Voyager - PixInsight

Light: L 44X300 BIN 2X2 - OIII 23X300 BIN 2X2 - R 12X300 BIN 2X2 -G 12X300 BIN 2X2 - B 12X300 BIN 2X2 - 11 Dark 11 Flat 11 Bias

Filtri: Optolong L 50.8 – Optolong R 50.8 – Optolong G 50.8 – Optolong B 50.8 – Optolong HA 3NM 50.8 – Optolong OIII 3NM 50.8 – Optolong SII 3NM 50.8

Accessori: Pegasus Astro Ultimate Powerbox· Focheggiatore Elettronico FocusCube V2 Pegasus Astro

Data: 05/04/25 12/04/25

Luogo di Ripresa: Gualdo Tadino(PG) Italia

Luna: 57% 99%

This 360° view of Mt Wilson's 60-inch Telescope was taken during a public viewing night on 7/29/2016. After construction of the 60-inch completed and it saw first light on December 8, 1908 it went on to become one of the most productive and successful telescopes in history. Most notably it was used to pioneer spectroscopic analysis, parallax measurements, nebula photography, and photometric photography. As this image illustrates now it is mostly used for public outreach, and luckily I can now tell you from experience the views through it are impressive to say the least.

For information about Mt Wilson's public viewing nights follow their facebook page:

www.facebook.com/Mount-Wilson-Observatory-313237138799112...

Check out their website which is full of information about the history and current goings on at the observatory:

www.mtwilson.edu/

Technical Info:

27 image panorama, 10" @ 3200 ISO

Camera: Canon 6D Hutech Mod

Filter: Optolong UHC

Lens: Rokinon 14mm at f4

Panorama Processing: PTGui Pro

Final Processing: Photoshop CC

Date: 7/29/2016

Location: Mount Wilson Observatory

The Andromeda Galaxy.

I've photographed this one so many times but it never gets old.

244 X 90 second subs for a total exposure of 6hrs 6 min

Camera: ZWO ASI294MC Pro, 120 gain, cooled to -10C

Scope: William Optics Redcat 71 f4.9

Filter: Optolong UV/IR cut

Guiding: William Optics 50mm scope with ZWO 120mm mini camera

Mount: Sky-Watcher EQ 6 R Pro

Control: ZWO ASIair pro

Shot from a Bortle 2 location in Ontario, Canada

Processed using DSS and Photoshop

Orion Nebula under the City area

with Multi-exposed, 13x120s, 19x60s, 22x30s. Total integration 56 minute with UHC Filter.

Imageing Detail:-

Telescopes: SKY ROVER 110ED

Imaging cameras: Pentax K-r (Mod)

Mounts: iOptron ZEQ25GT

Guide-camera: QHY5L-Ii-C

Focal reducers: x0.8 (F5.6)

Integration: 0.9 hours (full calibration)

Filter: Optolong UHC Filter

Locations: William's Balcony Observatory (JB), Johor Bahru, Johor, Malaysia

www.astrobin.com/225693/

www.facebook.com/william226

Messier 109 Barred Spiral Galaxy

84 Million Light Years Distant

Messier 109 (also known as NGC 3992) is a barred spiral galaxy exhibiting a weak inner ring structure around the central bar approximately 83.5 ± 24 million light-years away in the constellation Ursa Major. M109 can be seen south-east of the star Phecda (γ UMa). Messier 109 was discovered by Pierre Méchain in 1781. In 1783 Charles Messier catalogued NGC 3992 as his 109th object.

Between the 1920s through the 1950s, it was considered that Messier objects over 103 were not official, but in later years the additions became more widely accepted. David H. Levy mentions the modern 110 object catalog while Sir Patrick Moore gave the original to 104 but has M105-M109 listed as an addendum. By the late 1970s all 110 objects are commonly used among astronomers as they still are today.

In March 1956, supernova 1956A was observed in M109. SN 1956A was a type Ia supernova in the south-east part of the galaxy, glowing at magnitude 12.8 to 12.3 at its maximum. SN 1956A has been the only supernova observed in M109 since its discovery. It is also by far the most distant object in the Messier Catalog, followed by M91.

M109 has three satellite galaxies (UGC 6923, UGC 6940 and UGC 6969) and possibly might have more. Detailed hydrogen line observations have been obtained from M109 and its satellites. M109's H I distribution is regular with a low-level radial extension outside the stellar disc, while at exactly the region of the bar, there is a central H I hole in the gas distribution. Possibly the gas has been transported inwards by the bar, and because of the emptiness of the hole no large accretion events can have happened in the recent past.

Technical Information for Image

Telescope: William Optics Zenithstar 81 Refractor

Mount: iOptron CEM25P

Imaging Camera: ZWO ASI294MC Pro. Gain 120 at -5C.

Filter: Optolong L-Pro

Guiding: William Optics 50mm, 200mm FL, ASI290MC camera

Exposures: 21 x 180s each Bin 1x1

Capture: ASIAIR Pro

Guiding: ASIAIR Pro through ASI290MC camera

Polar Alignment: ASIAIR Pro

Site: Borrego Springs, CA USA, Bortle 4

Processing: Pixinsight with Touch up in Corel PaintShop Pro.

This is a comparison of the stacking with and without the images taken with the Optolong UHC filter. I did two sets of exposures, one with the filter in and one without, each set is ISO 400 and f2.5, 2x 4 minutes, 2x 2 minutes, and 2x 1 minute exposures. Stacked with Deep Sky Stacker and edited with PixInsight and Photoshop. Shot from a Bortle 4/5 zone at Rockport Reservoir, Utah.

The image on the left is the set without the Optolong stacked, the image on the right is with and without the filter stacked together. I tried to edit them as similar as possible.

Canon 6Da (ISO800) + Optolong LPro + Sigma Art 1.4/50 (f4.0)

Skywatcher Esprit 80/400 (première lumière !), ASI183MM-Pro et filtres Optolong LRVB sur monture AZEQ6, guidage en parallèle avec mini-guide ZWO 30/120 et ASI290.

Capture par brutes unitaires de 60" à gain 53/offset 25 : 126 L, 37 R, 31 V et 33 B (3h47 cumulées).

Sirilic, Pixinsight et Topaze Denoise.

Quelques réglages à peaufiner, back focus et tilt...

Takahashi FS60C, Nikon D810a, Optolong filter

Messier 3 is a globular cluster of stars in the constellation Canes Venatici. It was the first Messier object to be discovered by Charles Messier himself. It is about 33,920 ly from earth, 11.4 billion years old, and approximately 180 ly in diameter. Also seen in the image (lower left) is the star HD 119081, a red giant with a diameter 11 times greater than our sun. The spiral galaxy NCG 5263 can be seen in the lower right of the image.

Rio Rancho NM Bortle 5/6 zone

April 6-7, 2022

William Optics Redcat 51

ZWO 183mc pro

ZWO 30mm f/4 mini guide scope and ZWO 120 Mini

Optolong L-Pro filter

ZWO ASI Air Pro

Sky-Watcher HEQ5

119 X 300s lights; with darks bias dithering

Gain 111 at -10C

Processed in DSS and PS

Globular cluster M14. When the moon is full and there are only a few hours of anything vaguely resembling darkness (and most of that time under clouds), options for targets are somewhat limited. But globular clusters are nice, bright objects that can be captured quickly, and there are still a few we haven't imaged yet. This one had so far evaded being imaged and now it's another Messier object I can tick off the list.

[From Wikipedia] Messier 14 (also known as M14 or NGC 6402) is a globular cluster of stars in the constellation Ophiuchus. It was discovered by Charles Messier in 1764.

At a distance of about 30,000 light-years, M14 contains several hundred thousand stars. At an apparent magnitude of +7.6 it can be easily observed with binoculars. Medium-sized telescopes will show some hint of the individual stars of which the brightest is of magnitude +14.

The total luminosity of M14 is in the order of 400,000 times that of the Sun corresponding to an absolute magnitude of -9.12. The shape of the cluster is decidedly elongated. M14 is about 100 light-years across.

15/07/2022

014 x 180-second exposures at Unity Gain (139) cooled to -10°C

015 x dark frames

015 x flat frames

100 x bias frames

Binning 1x1

Total integration time = 42 minutes

Captured with APT

Guided with PHD2

Processed in Nebulosity and Photoshop

Equipment:

Telescope: Sky-Watcher Explorer-150PDS

Mount: Skywatcher EQ5

Guide Scope: Orion 50mm Mini

Guiding Camera: Zwo ASI 120 MC and SVBONY SV105 with ZWO USBST4 guider adapter

Imaging Camera: ZWO ASI1600MC Pro with anti-dew heater

Baader Mark-III MPCC Coma Corrector

Filter: Light Pollution filter and Optolong L-Pro

Ps. English version just below

Registrei esta imagem em 25 de julho de 2020 às 18h40m hora local na zona rural de Munhoz - MG. Local com escala de Bortle 4. É minha primeira imagem de um cometa. Processamento bem trabalhoso para conseguir alinhar as estrelas. A imagem tem vários problemas por causa do pouco tempo de exposição. De qualquer forma, gostei do resultado. Valeu pelo registro e aprendizado!

Dados técnicos:

Gain: 0, Offset: 10, temperatura da câmera: -15°C, exposição total de 19m40s, bias, darks, flats e dark flats aplicados.

Filtros

Luminância: 30 x 10s / Bin 1x1

Vermelho: 30 x 10s / Bin 1x1

Verde: 28 x 10s / Bin 1x1

Azul: 30 x 10s / Bin 1x1

Equipamento:

- Montagem Equatorial Orion Atlas EQ-G

- Telescópio GSO Ritchey-Chretien 8" F8 Fibra de Carbono

- Câmera ZWO ASI1600MM Cooled

- Redutor focal Astro-Physics 67 CCDT

- Sem guiagem

- Roda de Filtros ZWO 8 posições

- Filtros Optolong 1,25" Luminance, Red, Green, Blue

Softwares

- Captura: NINA 1.10

- Processamento: PixInsight 1.8 e Adobe Photoshop CS5

- Controle: Green Swamp Software e Cartes du Ciel

-----------------------------------

This image was captured at 25th July 2020 21:40 UTC in rural zone of Munhoz - Minas Gerais - Brazil. Bortle Scale 4. This is my first picture of a comet. The alignment of stars was very difficult because of tiny expose.

Technical data:

Gain 0, offset 10, Bin 1x1, sensor's temperature -15°C, total exposition of de 19m40s, bias, darks, flats and darks flats applied.

Filters:

Luminance 30 x 10s

Red 30 x 10s

Green 28 x 10s

Blue 30 x 10s

Equipments:

- Equatorial Mount Orion Atlas EQ-G

- GSO Ritchey-Chretien Telescope 8" F8 Carbon Fiber

- ZWO ASI1600MM Cooled

- Focal reducer Astro-Physics 67 CCDT

- No Guided

- ZWO Filter Wheel (8 x 1.25")

- Filter Optolong 1.25" Luminance

- Filter Optolong 1,25" Red

- Filter Optolong 1,25" Green

- Filter Optolong 1,25" Blue

Softwares

- Capture: NINA 1.10

- Processing: PixInsight 1.8 and Adobe Photoshop CS5

- Control: Green Swamp Software and Cartes du Ciel

Crescent Nebula

Telescope: William Optics GTF81

Mount: Losmandy G11

Camera ZWO ASI 294 MC PRO -10ºc Gain 120

Filter: Optolong L-Enhance

Integration: 57 x 300 "

APT

Elaboration with Pixinsight

The cluster in the center of the image is, Messier 11, the Wild Duck Cluster, an open cluster in the constellation of Scutum the Shield. This open cluster contains nearly 3000 stars and is roughly 6200 light-years away. It was discovered in 1681 by Gottfried Kirch.

Orion ED 102T & QHY163M- 15x180sec

AstroTech AT65EDQ & QHY128C- 5x300sec

Williams Optics Redcat 51 & QHY268C-8x300sec

Telescopio: Meade 115 6000 Series

Camara: ZWO ASI1600MM-C

Filtros: Optolong Ha y OIII 12nm

Guiado: Orion Starshoot Autoguider + Orion Short Tube 80

Montura: Celestron CGEM

Ha: 60x300s

OIII: 24x300s

Bin: 1x1

Temperatura: -10°C

Paleta: L: Ha+OIII / HOO

Observatorio Astronómico Altaír

Poncitlán Jalisco México

Guillermo Cervantes Mosqueda

----------------------------------

Telescopio: SW100ED,FR 0.85x, F7.5

Camara: Atik 383L plus, EFW2, Enfocador Lunatico Seletek,

Guider 60x200 doble helicoidal, QHY5 IIL Mono, PHD2 2.6.4

Montura: CGE PRO.

30x600 + 11x300 SII Baader 8.5nm

Playa del Carmen, Quintana Roo

México

Federico Cederstrom

Octubre 2018

22x200s

ASI071MC-Cool, WO SpaceCat 51, Optolong L-enhance, CGX

Omegon 96 mm F5.5 Triplet Apo

ZWO ASI 2600 MC

Optolong L-Pro

23 x 300 sec expoure time

Horse Head and Flame Nebula, 1500 Light years away from earth.

4,5h mit Optolong L Enhance filter.

Equipment used: modified Canon EOS 750D with Canon 400mm F5.6L on a iOptron Skyguider with iPolar Alignment.

It is difficult in general to image faint objects in the high star population density area in Milkyway. SNR G65.3+5.7 locates in such area. Narrow-band pass filter is helpful here. We can not find such objects on the frame taken without such filters.

right half:

equipment: Askar FMA180 Pro, Optolong L-Ultimate Dual 3nm Filter, and Canon EOS R6-SP5, modified by Seo-san on ZWO AM5 Equatorial mount, autoguided at a star nearby with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 120MM-mini, and PHD2 Guiding on Genuine Tripod

exposure: 9 times 1,800 seconds at ISO 6,400 and f/4.5

Frames of latter half were taken under 50% illuminated moon.

site: 680m above sea level at lat. 36 59 01 North and long. 140 32 05 East in Kanotsunodaira Fukushima 福島県 鹿角平. Ambient temperature was around 10 degrees Celsius or 34 degrees Fahrenheit. Wind was mild, and SQML was up to 21.16 before moonrise. Seeing was bad, and guide error RMS was around 1".

left half:

equipment: Sigma 40mmF1.4 Art and Canon EOS 6D-sp4, modified by Seo-san on Vixen AXD Equatorial Mount, auto guided at a star nearby with Fujinon 1:2.8/75mm C-Mount Lens, ZWO ASI 120MM-mini, GPUSB, and PHD2 Guiding

exposure: 4 times x 900 seconds, 3 x 240 sec, and 7 x 60 seconds at ISO 1,600 and f/3.5

First exposure started at 15:32:52UTC July 2, 2022.

site: 1,410m above sea level at lat. 37 45 03 North and long. 140 06 25 East in Shirabu pass at the border of Fukushima and Yamagata 福島山形県境白布峠.

Sky was dark and clear. SQML was 21.34. Wind was almost none. Ambient temperature was around 17 degrees Celsius or 63 degrees Fahrenheit. It was superb night.

150/750 PDS, canon 1100d modificada, filtro UHC optolong, 80x600"+7x1200", autoguiado con buscador 9x50+spc900nc, procesada con pixinsight, Photoshop y lightroom.

No me convence el filtro UHC, parece que complica bastante el procesado

Saturn, taken with a ZWO ASI120MM camera and Optolong CCD RGB filters and a Celestron Edge HD 925 telescope from my backyard in Long Beach, CA.

The best 48% of frames from 45 s SER videos with each of the filters were stacked in AutoStakkert. This created 8 images in each of the three color filters. Those images were sharpened in PixInsight. All images with the same color filter were derotated and combined in WinJUPOS, then the R, G, and B stacks were derotated and combined to create the color image. I used Registax to get the color balance right, that did some small final touches in Photoshop.

CM longitudes:

System I: 80.3°

System II: 330.1°

System III: 356.8°

Image acquisition Narrowband:________________

103 Light Frames

40 Dark Frames

40 Flat Frames

40 Offset/Bias Frames

Exposures 300 Sec

ISO-1600

Equipment:__________________

Telescope: ES ED102CF FCD-100 F7-714mm

Orion .8x focal reducer

ZWO ASIAir Plus

Mount: ZWO AM5

Camera: Nikon D7000 Stock

Optolong L-Enhance Dual Narrowband Filter

Image acquisition-Full Color image:________________

98 Light Frames

40 Dark Frames

40 Flat Frames

40 Offset/Bias Frames

Exposures 300 Sec

ISO- 800

Equipment:__________________

Telescope: ES ED102CF FCD-100 F7-714mm

Orion .8x focal reducer

ZWO ASIAir Plus

Mount: ZWO AM5

Camera: Nikon D7000 Stock

Baader Moon & Sky Glow filter

Auto Guiding:____________________

ASIAir PHD guiding

Camera: ZWO ASI178MM

Guide Scope: SVBony 60mm x 240mm

Post Processing:_________________

Sirilic V-1.15.2

Siril V-1.2.4

GIMP V-2.10.38

Total Exposure Time: 16Hrs. 45Mins.

Messier 106 (also known as NGC 4258) is spiral galaxy in the constellation Canes Venatici, the Hunting Dogs. It was discovered by Pierre Méchain in 1781. M106 is at a distance of about 22 to 25 million light-years away from Earth.

Telescope: William Optics ZenithStar 81 Refractor

Mount: Losmandy GM811G

Imaging Camera: ZWO ASI 2600MC Pro

Filter: Optolong L-Pro Filter

Site: Elk Grove, California, USA

Calibration Files: None

Guiding: None

Integration Time: 3h 36m

No of Frames: 216

Sub Exposure Time: 60 seconds

Bortle Zone: Class 6

Date Taken: February 25, 2021

The Horsehead Nebula (also known as Barnard 33) is a small dark nebula in the constellation Orion.

Shot with a Modified Olympus E-M10 Mark II and the Sky-Watcher Esprit 100 ED.

This was shot from the city with a Optolong h-alpha 7nm filter.

42 one minute exposures, Darks, Flats and Bias added.

www.alexmcclurephotography.com/

A favourite cluster of mine, the double cluster in perseus.

Luminance data from the QHY163M, with an old DSLR image used for colour.

ED80/QHY163M - Optolong filters. DSLR Canon 350D.

Heaven

IC 410 & in Auriga

La Jonquera, Sant Quirze de Colera, Albanya - Girona - Spain

Equipment used :

Canon 6D mod - TS Imaging Star71 - WO SpaceCat 51

RGB 25 x 600" ISO 3200 - Optolong L-eNhance filter

12 x900" ISO 3200 - Optolong H-Alpha filter

12 x900" ISO 3200 - Optolong SII filter

12 x900" ISO 3200 - Optolong OIII filter

Sky Watcher EQ6 Mount

Guide camera QHY5

Flats, Darks & Bias