Great Hercules stars cluster M13 is a globular star cluster that contains half million stars. Its about 150 light years across and mainly composed of red giant stars. The core of this region is believed to be very hot due to thousands of stars compacted in small region. Gear setup: Celestron edge HD 8 @ f/7, iOptron GEM45, ZWO 294C @0, unguided, Optolong L- Pro, Lights 165 x 30 sec, 6 Flats, 60 Darks, 50 Bias. Total exposure 82 minutes. Captured by APT & Processed by PI and PS. For image more details: www.astrobin.com/full/hl9p1w/0/

Messier 81 (also known as NGC 3031 or Bode's Galaxy) is a spiral galaxy about 12 million light-years away, in the constellation Ursa Major.

www.astrobin.com/338469

Technical card

Imaging telescopes or lenses: Altair Astro RC250-TT 10" RC Truss Tube, GSO RC8 Carbon Fiber

Imaging camera: ZWO ASI1600MM-Cool

Mount: Skywatcher AZ EQ-6 GT

Guiding camera: QHYCCD QHY5III174

Focal reducer: Astro-Physics CCDT67 - 0.67x Reducer

Software: Main Sequence Software Seqence Generator Pro, Pleiades Astrophoto PixInsight

Filters: Optolong CLS - CCD (V4) 36mm, ZWO red, ZWO blue

Accessories: MoonLite CSL 2.5" Focuser with High Res Stepper Motor, ZWO EFW, Baader Planetarium Steeltrack 2"

Resolution: 4536x3406

Dates: Dec. 31, 2016, March 15, 2018, March 18, 2018

Frames:

Optolong CLS - CCD (V4) 36mm: 82x120" (gain: 75.00) -20C bin 1x1

Optolong CLS - CCD (V4) 36mm: 18x180" (gain: 75.00) -20C bin 1x1

ZWO blue: 21x90" (gain: 139.00) -20C bin 1x1

ZWO green: 21x90" (gain: 139.00) -20C bin 1x1

ZWO red: 22x90" (gain: 139.00) -20C bin 1x1

Integration: 5.2 hours

Avg. Moon age: 10.19 days

Avg. Moon phase: 3.35%

Astrometry.net job: 1980110

RA center: 148.890 degrees

DEC center: 69.070 degrees

Pixel scale: 0.557 arcsec/pixel

Orientation: 87.401 degrees

Field radius: 0.439 degrees

Locations: Berga Resort, Berga, Barcelona, Spain

Equipo Principal: ZWO ASI 1600 mm-pro + SW Explorer 250pds + SW Coma Corrector 0.9x + EQ6-R-Pro + ZWO EAF + ZWO 7x2" EFW

Equipo guía: starguider 60/240 mm, ZWO ASI 120mm mini

*Gain 139, -25 º C, Ha 7nm 2" Optolong, 120x180"

*Gain 139, -25 º C, Oiii-CCD 6.5 nm 2" Optolong, 70x180"

*Gain 139, -25 º C, Sii-CCD 6.5 nm 2" Optolong, 30x180"

100 Darks

80 Flats por filtro

Polar Align: SharpCap 3.2

Adquisición: SGP 3.1

Procesado: Pixinsight 1.8.8, PS

Anche in questa occasione sono andato alla ricerca di segnale debole. Il DSO è stato la "Nebulosa Girino", indicata anche con la sigla "IC410" dentro la quale si trova l'ammasso aperto "NGC1893" nella costellazione dell'Auriga.

Ho volutamente decentrato la nebulosa per inserire nello stesso FOV il gruppo di stelle che si vedono a sinistra, il cui asterismo ricorda la costellazione della Lira. Così ho potuto anche fotografare i filamenti nebulari molto deboli che circondano la nebulosa principale.

L'uso del filtro a banda stretta, il cielo non sempre buono e l'inquinamento luminoso hanno ridotto il rapporto segnale-rumore (SNR) soprattutto delle nebulosità più deboli, ma mi ritengo comunque molto soddisfatto del risultato ottenuto.

_____________________

Also on this occasion I went looking for a weak signal. The DSO was the "Tadpole Nebula", also indicated with the acronym "IC410" within which the open cluster "NGC1893" is located in the constellation of Auriga.

I deliberately decentralized the nebula to include in the same FOV the group of stars that can be seen on the left, whose asterism recalls the constellation of Lyra. In this way I was also able to photograph the very faint nebular filaments that surround the main nebula.

The use of the narrow band filter, the not always good sky and the light pollution have reduced the signal-to-noise ratio (SNR) especially of the weaker nebulae, but I am still very satisfied with the result obtained.

Google translator

_____________

Optic: APO Refractor Askar 103APO + 0.6X

Camera: ZWO ASI533MC-Pro

Mount: Sky Watcher HEQ5 Synscan

Seeing: 4 (scala Antoniadi)

Filter: Narrowband Optolong L-eNhance 2" + SVbony UV-IR cut

-153x300s 121gain / 26 dark /21 flat / 18 darkflat /100 bias (L-eNhance 2")

-19x20s 121gain/ 20dark/ 100bias (UV-IR cut) for color of the stars

t° sensor: -10°C

Date: 18+29+30/12/2024, 02+05/01/2025

Integration: 12h 45min

Temperature: 5°C (media)

location for : Biancavilla -Catania-(Italy) 515m slm

Acquisition: NINA, PHDGuiding

Processing: DSS, SIRIL, PS, GraXpert.

Also known as the Seven Sisters and M45, the Pleiades is one of the brightest and closest open clusters. The Pleiades contains over 3000 stars, is about 400 light years away, and only 13 light years across. Quite evident are the blue reflection nebulae that surround the brighter cluster stars.

Esprit 100mm APO refractor with Optolong L (IR/UV cut) filter and Canon 6Da. Combination of 30, 240, 360 and 600 second exposures. Total 10hr30m on 13+21 october and 6 november 2015. Average SQM:20.7

Stacked in DeepSkyStacker and (Re)Processed in PixinSight.

Full 5178x3298 resolution via the download option.

Knight Observatory Tomar

Press L (followed by F11) for the best view.

La nebulosa del Anillo (también conocida como nebulosa anular de la Lyra, nebulosa planetaria M57, Messier 57, M57 o NGC 6720) es una nebulosa planetaria prototípica situada en la constelación de Lyra. Se trata de una de las nebulosas más conocidas utilizada frecuentemente como ejemplo de este tipo de objetos astronómicos. Está situada a 0,7 kpc (2300 años luz) de la Tierra y fue descubierta por Antoine Darquier de Pellepoix en 1779.(wikipedia)

40 tomas de 180' - 2:00 de exposición.

Equipo:

Telescopio/Telescope: TS RC 6" - Focal 1370mm

Montura/Mount: Ioptron ieq45 PRO

Seguimiento/Guiding: tubo SV106+QHY5IILM

Camara/Camera: CCD QHY8PRO + filtro optolong L-pro.

19/7/2020- Markinez ,Álava

Two sessions combined to produce this shot. One was taken with the UHC filter and the other was taken with the Optolong L-eNhance filter. Total combined time is nearly 3.5 hrs. Not too bad considering the location where they were taken - a Bortle 8 red zone.

Televue TV-85 at F/5.6, QHY183c @ -15C and -20C. 2hrs with L-eNhance, 30 sec exposures and 1.48hrs in 15 sec exposures with UHC.

This is an emission nebula in the constellation of constellation of Cassiopeia 9,200 light years from earth. It's a huge region of glowing gas and dust 48 light years across.

Tools: Celestron C8, ASI294MC Pro, Optolong L-eNhance filter

Shot from the red zone suburbs, Bortle 6 skies

The alignment of some of the subs was off forcing a considerable crop of the final image.

33 subs @ 300s, 20 darks , 20 Flats

2h 45 minutes total exposure

Technical Information:

Telescope: AIRY APO 130T PrimaLuceLab

Mount: Paramount MyT - Software Bisque

Camera: QHYCCD QHY9

Filter: Optolong H-a 7nm, OIII 6.5nm

Frames: H-a: 49x900s -- OIII: 36x900s

Total Integration: 21,25 Hours

Software: SGP – TheSkyX – PHD2 – DSS – PixInsight – CS6

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

Environment Temperature: About 23°C

Relative Humidity: 89%

Date: 26.06.20 - 27.06.20 - 04.07.20 - 25.08.20 - 27.08.20

Taken from the AstroAtlas Observatory situated in Noventa di Piave, ITALY.

Here there is my Bi-Color version of NGC7000; I would say a small part of it! Honestly, I am absolutely happy of this result... I think this is one of my best image, in my humble opinion.

The improvment of the new Optolong NB filters is very nice; no more halos around the brigher stars and no more halos in the image.

I hope you like it and clear skies!

NOTE: The image was acquired from a polluted sky with high humidity - Bortle 5.

#astrophotography #astronomy #astroatlas #space #universe #cosmo #NGC7000 #north #america #nebula #bicolor

Telescopio: Tecnosky 110 mm f 7

Daystar Quark H-Alpha Chromosphere filter

Filter: Optolong IR-CUT 50,8 mm

Lunghezza focale: 3.311 mm

Camera di ripresa ZWO ASI 174 mono Cool

Montatura: iOptron CEM60

Data: 23 Marzo 2022 Ore: 11:05 Local Time

Pose: 375 sommate su 1.500 reiprese a 127 fotogrammi al secondo

Seeing: 2 Antoniadi Trasparenza del cielo 6

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.[1] The piece 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 (HD 206267) that is just to the east of IC 1396A. The entire IC 1396 region is ionized by the massive star, except for dense globules that can protect themselves from the star's harsh ultraviolet rays.

The Elephant's Trunk Nebula is now thought to be a site of star formation, containing several very young (less than 100,000 yr) stars that were discovered in infrared images in 2003. Two older (but still young, a couple of million years, by the standards of stars, which live for billions of years) stars are present in a small, circular cavity in the head of the globule. Winds from these young stars may have emptied the cavity.

The combined action of the light from the massive star ionizing and compressing the rim of the cloud, and the wind from the young stars shifting gas from the center outward lead to very high compression in the Elephant's Trunk Nebula. This pressure has triggered the current generation of protostars.

Equipment used

William Optics GT81 IV - 0.8x focal reducer

Optolong L Xtreme Filter

EQ6R Pro Mount

ASIAIR Pro

ZWO EAF

ZWO Mini Guidescope and Camera

ZWO 2600MC Camera Cooled to -10c

28 x 600 Second exposures

30 x flats

Stacked and processed in Pixinsight

Bortle 6 backyard

I love the blend of Hydrogen Alpha and Oxygen (red and blue) in this target.

Not bad for being an estimated 5000 lightyears from Earth (in the constellation Cygnus)

ZWO ASI533MC Pro

Optolong L-Extreme dual narrowband filter

Sky-Watcher Quattro 200P

Sky-Watcher Quattro Coma Corrector

Orion Atlas Mount EQ-G

ZWO ASI 120mm guide camera

Orion 50mm guide scope

ZWO ASIAir Mini

22 / 300sec exposures

10 Dark frames / 25 Flat frames

Bortle 6 skies

Processed with Pixinsight and Lightroom Classic

Equipo Principal: ZWO ASI 1600 mm-pro + SW Explorer 250pds + SW Coma Corrector 0.9x + EQ6-R-Pro + ZWO EAF + ZWO 7x2" EFW

Equipo guía: starguider 60/240 mm, ZWO ASI 120mm mini

*Gain 139, -25 º C, Ha 7nm 2" Optolong, 85x180"

*Gain 139, -25 º C, Oiii-CCD 6.5 nm 2" Optolong, 80x180"

*Gain 139, -25 º C, Sii-CCD 6.5 nm 2" Optolong, 80x180"

100 Darks

100 Flats por filtro

Polar Align: SharpCap 3.2

Adquisición: SGP 3.1

Procesado: Pixinsight 1.8.8, PS

The bright blue-white subgiant variable star Gamma Cassiopeia is surrounded by a gaseous disc: IC 59 and IC 63. Both are reflection nebulae, although IC 63 is considered to be an emission reflection nebula. The star Gamma Cassiopeia is 19 times more massive and 65 000 times brighter than our Sun. It also rotates at the incredible speed of 1.6 million kilometres per hour. The fast rotation causes eruptions of mass from the star into a surrounding disk. The radiation of Gamma Cassiopeiae is so powerful that it even affects IC 59- 63. The hydrogen is being bombarded with ultraviolet radiation from Gamma Cassiopeiae, causing its electrons to gain energy which they later release as hydrogen-alpha radiation — visible in red in this image.

This hydrogen-alpha radiation makes IC 63 an emission nebula, but we also see blue light in this image. This is light from Gamma Cassiopeiae that has been reflected by dust particles in the nebula, meaning that IC 63 is also a reflection nebula.

Camera: Moravian G2 8300

Filters: 31mm unmounted Optolong

Optic: Televue 102 f/7

Mount: Ioptron CEM60 HP

Autoguider: camera Magzero 5m on SW 70/500, Phd guiding

Frames Ha 7nm: 35X600sec - RGB: 8X600sec each - OIII 6.5nm: 15x600sec Bin1 -25°

Processing: Pixinsight, Photoshop

www.astrobin.com/375438

Sh2-119, or Sharpless 119, is a large complex of emission nebulosity in Cygnus constellation, about 2 degrees east of the North American Nebula.

It is located just around 68 Cygni, a quite bright star of magnitude 5. The nebula was catalogued by astronomer S. Sharpless in his famous "Catalogue of HII Regions", published in 1959. Sharpless described it as a large (have an apparent diameter of about 2 degrees) and "bright" nebula.

The nebula is crossed by several dark dust lanes and globules, especially on the southern part.

(description credits skyfactory.org)

Technical card

Imaging telescope or lens:Teleskop Service TS Photoline 107mm f/6.5 Super-Apo

Imaging camera:ZWO ASI1600MM-Cool

Mount:Astro-Physics Mach-1 GTO CP4

Guiding telescope or lens:Celestron OAG Deluxe

Guiding camera:QHYCCD QHY5III174

Focal reducer:Riccardi Reducer/Flattener 0.75x

Software:Main Sequence Software Seqence Generator Pro, Astro-Physics AAPC, Pleiades Astrophoto PixInsight

Filters:Astrodon B Gen.2 E-series 36mm, Astrodon G Gen.2 E-series 36mm, Astrodon R Gen.2 E-series 36mm, Astrodon HA 36mm - 5nm, Astrodon S-II 36mm - 5nm, Astrodon O-III 36mm - 5nm

Accessories:ZWO EFW, MoonLite NiteCrawler WR30

Resolution: 2286x1752

Dates:Sept. 23, 2018, Sept. 24, 2018, Oct. 5, 2018, Oct. 10, 2018

Frames:

Astrodon B Gen.2 E-series 36mm: 50x1" (gain: 200.00) -20C bin 1x1

Astrodon G Gen.2 E-series 36mm: 50x1" (gain: 200.00) -20C bin 1x1

Optolong Ha 7nm 36mm: 57x300" (gain: 200.00) -20C bin 1x1

Astrodon O-III 36mm - 5nm: 14x300" (gain: 200.00) -20C bin 1x1

Astrodon R Gen.2 E-series 36mm: 50x1" (gain: 200.00) -20C bin 1x1

Astrodon S-II 36mm - 5nm: 14x300" (gain: 200.00) -20C bin 1x1

Integration: 7.1 hours

Avg. Moon age: 13.59 days

Avg. Moon phase: 54.14%

Astrometry.net job: 2351882

RA center: 319.578 degrees

DEC center: 43.722 degrees

Pixel scale: 2.930 arcsec/pixel

Orientation: 89.941 degrees

Field radius: 1.172 degrees

Locations: Berga Resort, Berga, Barcelona, Spain

Data source: Backyard

49x240 seconds iso1600 with Esprit 100 f5.5 refractor with Optolong L filter and Canon 6Da. Stacked in DSS with 24 Flats and 174 biasframes. Simple workflow in Pixinsight. (DBE, background- color calibration, histogram, saturation, curves and scnr anti-green)

Added 24 more subs.

Knight Observatory Tomar.

S.Q.M: 20.8

RC8 à 1088 mm de focale, ASI533MC + Optolong L-Pro.

7h par sub de 60", Pixinsight

ccd: Moravian G3-16200 with EFW + OAG

filters: Optolong LRGB and Astrodon 5-nm Ha/O3

telescope: FSQ 106N f/5

mount: 10Micron GM2000 QCI

guider: Lodestar X2

exposure: L 40x10min + RGB 20x5min (all 1x1)

location: Les Granges, 900 m (Hautes Alpes, France)

software: TheSkyX Pro, CCD Commander, Pixinsight, PS CC

date: 17 - 28 Mar 2020

Equipo Principal: ZWO ASI 1600 mm-pro + SW Explorer 250pds + SW Coma Corrector 0.9x + EQ6-R-Pro + ZWO EAF + ZWO 7x2" EFW

Equipo guía: ZWO M68 OAG, ZWO ASI 120mm mini

*Gain 139, -15 º C, Ha 7nm 2" Optolong, 80x180"

*Gain 139, -15 º C, Oiii-CCD 6.5 nm 2" Optolong, 50x180"

*Gain 139, -15 º C, Sii-CCD 6.5 nm 2" Optolong, 60x180"

100 Darks

80 Flats / 80 Darkflats por filtro

Polar Align: SharpCap 3.2

Adquisición: SGP 3.2

Procesado: Pixinsight 1.8.8, PS

Equipo Principal: ZWO ASI 1600 mm-pro + SW Explorer 200p + SW Coma Corrector 0.9x + EQ6-R-Pro + ZWO EAF

Equipo guía: guidescope 60/240 mm, camara guia ZWO ASI 120mm mini

*Gain 139, -20º C, Ha 7nm 2" Optolong, 70 Lights x 180"

*Gain 139, -15º C, Oiii-CCD 6.5 nm 2" Optolong, 60 Lights x 180"

*Gain 139, -20º C, Sii-CCD 6.5 nm 2" Optolong, 52 Lights x 180"

100 Darks

100 Flats/Filtro

Polar Align: SharpCap 3.2

Adquisición: SGP 3.1

Procesado: Pixinsight 1.8.8, PS

Westerhout 5 (Sharpless 2-199, LBN 667, Soul Nebula) is an emission nebula located in Cassiopeia. Several small open clusters are embedded in the nebula: CR 34, 632, and 634 (in the head) and IC 1848 (in the body). The object is more commonly called by the cluster designation IC 1848.

Small emission nebula IC 1871 is present just left of the top of the head, and small emission nebulae 670 and 669 are just below the lower back area.

The galaxies Maffei 1 and Maffei 2 are both nearby the nebula, although light extinction from the Milky Way makes them very hard to see. Once thought to be part of the Local Group, they are now known to belong to their own group- the IC 342/Maffei Group.

This complex is the eastern neighbor of IC1805 (Heart Nebula) and the two are often mentioned together as the "Heart and Soul".

EQ6R Pro Mount

William Optics GT 81V + .8 reducer

ASI 2600MC camera cooled to -10c

Optolong L Extreme Filter

ASIAIR Pro

Mini Guide Scope and camera

110 x 600 second exposures

30 x dark, flat & dark flat calibration frames

Stacked and processed in Pixinsight

NGC1499 nebulosa California

Dicembre 2023/Gennaio 2024

Località: San Romualdo - Ravenna

Askar 200 F/5 su Avalon M-Uno

Autoguida con QHY5III 174M su Celestron OAG

QHY294C raffreddata -15

Filtro Optolong L-Extreme - 77 immagini da 10 minuti.

Acquisizione: Astroart8 - Calibrata con Dark.

Elaborazione: Astroart8 e Paint Shop Pro2023.

www.cfm2004.altervista.org/astrofotografia/nebulose/ngc14...

14 x 300s using the QHY268C and Optolong L-eXtreme filter.

knew that the was a lot of red wisps around the Seagull nebula. this is my 105mm Nikon prime lens first try at Astro photography with the very same camera as the shot next to this, there is just so many stars out there you almost loose the faint red wisps. This was not auto focus but Bahtinov mask.

I had to call it quits as I am now clouded in but the idea of the wisps show very well. the very small white nebula that is in view just below the seagull is Thors Helmet the target that I wanted to do next but as its only 30 shots a night till the tree gets in the way I will leave for next year. the next week or so is clouded in so no point even starting to get more.

ZWOASI071MC -7c 39 shots 600 secs, over 2 night camera rotated 104 degrees.

ZWOEAF disconnected ,

Optolong LeNhance filter In filter draw,

Nikon 105MM F2.8 Lens,

Skywatcher NEQ 6 Pro Hypertuned

Guided PHD2, SGP

Pixinsight, Ps & Lr.

NGC-1499

C6 @ f/2 (300mm) Hyperatar

Captured in ASIStudio 300sec 24 subs

ASIZWO071MC pro

Optolong L-eNhance Light Pollution Filter

EAF autofocuser

Guided with PHD2

AVT-70 guide scope

ASIZWO174mm Guide camera

Celestron CGX Mount

Austin, Texas

Technical Information:

Telescope: AIRY APO 130T

Mount: Paramount MyT

Camera: QHYCCD QHY9

Filter: Optolong H-a 7nm, OIII 6.5nm, SII 6.5nm

Frames: H-a: 40x900s -- OIII: 40x900s -- SII:32x900s

Total Integration: 28 Hours

Software: SGP – TheSkyX – PHD2 – DSS -PixInsight – CS6

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

Environment Temperature: About 19°C

Relative Humidity: 89%

Date: 24.03.20 - 06.04.20 - 09.04.20 - 10.04.20 - 20.05.20 - 26.05.20 - 27.05.20 - 11.06.20 - 12.06.20

Taken from the AstroAtlas Observatory situated in Noventa di Piave (ITALY), this is my version of NGC6888 processed in RGB using the Optolong HSO filters. I am very happy of this result!

I wanted to highlight the OIII that in my Hubble Palette version I did not do (especially in the upper right corner of the Nebula).

I hope you like it!

NOTE: The image was acquired from a polluted sky with high humidity - Bortle 5.

wikipedia:

La chaîne de Markarian est un ensemble de galaxies appartenant à l'amas de la Vierge. Elle doit son nom à Benjamin Markarian qui a découvert qu'elles avaient un mouvement commun. La chaîne comprend huit galaxies : M84 (NGC 4374), M86 (NGC 4406), NGC 4477, NGC 4473, NGC 4461, NGC 4458, NGC 4438 et NGC 4435 + M87

Markarian's Chain is a stretch of galaxies that forms part of the Virgo Cluster. When viewed from Earth, the galaxies lie along a smoothly curved line. Charles Messier first discovered two of the galaxies, M84 and M86, in 1781.

Acquisition:

Rising Cam IMX571 color + Zenithstar 73

iOptron CEM26 + iPolar

Filtre Optolong L-Pro

ZWO ASI224MC + WO Uniguide 120mm

NINA & PHD2

25 février & 12 mars 2023:

40 x 300 sec -- Gain 101 -- Offset 246

Refroidi -20oC

Traitement/processing :

Siril & Gimp

AstroM1

(rsi2x.2b)

Camera: Moravian G2 8300

Filters: 31mm unmounted Optolong

Optic: Televue 102 f/7

Mount: Ioptron CEM60 HP

Frames: RGB: 7+5+9X100sec Bin1 -35°

Processing: Pixinsight, Photoshop

60 tomas de dos minutos

f/4

Canon 70-200 a 200mm

Canon 6d Modificada

Filtro Optolong UHC

Montura Skywatcher Star Adeventure

Procesada con PixInsight y Photoshop

La Nebulosa del Coazón (IC 1805) y la Nebulosa del Alma (IC 1848) son dos nebulosas de emisión situadas en la constelación de Casiopea a 7500 años luz del Sistema Solar, en el brazo espiral de Perseo de la Vía Láctea.​ Ambas conforman la asociación estelar Cassiopeia.​

La distancia hacia estas dos nebulosas esta bien determinada, principalmente porque tienen un Cúmulo de estrellas en su centro (es mucho más fácil de determinar la distancia de una nebulosa si esto ocurre). Las nebulosas Corazón y Alma están ubicadas en el brazo de Perseo de nuestra galaxia a 7000 y 7500 años luz de nosotros. Esta parte del brazo tiene una gran actividad de formación de estrellas y hay muchos Cúmulo estelares jóvenes.

La nebulosa se caracteriza por su color rojo intenso y su configuración es resultado por la radiación que emana de un pequeño grupo de estrellas cerca de centro de la nebulosa que Ionizan el gas dándole ese color rojo. Este cúmulo abierto de estrellas conocido como Melotte 15 contiene algunas estrellas brillantes cerca de 50 veces la masa de nuestro Sol, y muchas estrellas más tenues que son sólo una fracción de la masa de nuestro Sol. El Cúmulo de la nebulosa contuvo un microcuásar que fue expulsado hace millones de años.

Abajo a la derecha se aprecian dos comulos dobles, NGC884(xPersei) y NGC869(hPersei).

A farewell to one of the most imaged objects in the night sky. A project I started in February on the Esprit 100ED telescope at the complex, but didn’t manage to get round to edit it until now. I used it to practice some new scripts in PixInsight for image blending. I am happy with the details in this image, the Esprit 100ED really is a great telescope for wide field imaging. The focal length of this image is 564mm after using the Skywatcher field flattener.

A much higher resolution image with imaging details can be found on my Astrobin page at: astrob.in/ev6jv9/0/

Thank you for looking.

Technical summary:

Captured: 9 Nights in February 2024

Location: Turismo Astronómico, Los Coloraos, Gorafe, Spain

Bortle Class: 3

Total Integration: 26h 54m

Filters: Baader Moon & Skyglow, Optolong L-Ultimate

Pixel Scale: 1.4 arcsec/pixel

Telescope: Skywatcher Esprit 100ED

Image Camera: ZWO ASI2600MC Pro

Mount: Skywatcher EQ 6R Pro

Capture software: NINA, PHD2

Editing software: PixInsight, Adobe Lightroom

Here is a shot of one of the most photographed objects in the night sky, the Horsehead Nebula. The Horsehead Nebula is a diffuse dark nebula in the constellation Orion. The Horsehead Nebula is also referred to as Barnard 33 and is located inside the emission nebula IC 434 (the reddish background), it lies about 1,500 light-years away. The bright star to the left of the Horsehead Nebula is actually the star Alnitak, the leftmost star in the belt of Orion.

Observation data: J2000.0 epoch

Right ascension: 05h 40m 59.0s

Declination: −02° 27′ 30.0"

Distance: 1,375±54 ly

Apparent magnitude (V): 6.8

Apparent dimensions (V): 8 × 6 arcmins

Constellation: Orion

Tech Specs: Sky-Watcher Esprit 120ED Telescope, ZWO AS2600mc-Pro running at -10C, Celestron CGEM-DX mount, 24 x 300 second guided exposures, darks from the library and flats at the end of imaging, Optolong L-eXtreme 2” filter, focused with a ZWO EAF, controlled with a ZWO ASIAir Pro. Processed using PixInsight and DSS. Image Date: February 13, 2023. Location: The Dark Side Observatory (W59), Weatherly, PA, USA (Bortle Class 4).

The Horsehead Nebula or Barnard 33 is a small dark nebula located in the constellation of Orion. Along with the Flame Nebulae or NGC 2024, an emission nebulae, they form one the most photographed regions in the sky. Estimations of distance put the Horsehead around 1,400 light years and the Flame anywhere between 900-1,500 light years. The bright region behind the Horsehead is a bright emission nebula designated IC 434 and just below the Horsehead is the emission and reflection nebula NGC 2023. The bright star above the Flame is the triple star system Alnitak one of the three main stars forming Orion's belt.

Finally a short break in the clouds to allow a brief imaging session.

This image was constructed using data imaged on 31st Jan 2024 using my fast Newtonian with a OSC camera and data from last year with the same camera and one of my APO's.

NEQ6PRO

Vixen R200SS with dedicated reducer/corrector @f/3.8

QHY294C Gain 290 -20C

Optolong L-eNhance narrowband filter

15 x 120sec

24 x 300sec subs

Acquisition time 150mins

NEQ6PRO

TSAPO130Q @f/5

QHY294C Gain 2900 -20C

STC Duo narrowband filter

16 x 180sec

14 x 900sec subs

Acquisition time 4hrs18mins

Total time 6hrs48mins

Processed using Pixinsight and Photoshop.

from old APOD: Scanning the skies for galaxies, Canadian astronomer Paul Hickson and colleagues identified some 100 compact groups of galaxies, now appropriately called Hickson Compact Groups. The four prominent galaxies seen in this intriguing telescopic skyscape are one such group, Hickson 44, about 100 million light-years distant toward the constellation Leo. The two spiral galaxies in the center of the image are edge-on NGC 3190 with its distinctive, warped dust lanes, and S-shaped NGC 3187. Along with the bright elliptical, NGC 3193 at the lower right, they are also known as Arp 316. The spiral in the upper left corner is NGC 3185, the 4th member of the Hickson group. Like other galaxies in Hickson groups, these show signs of distortion and enhanced star formation, evidence of a gravitational tug of war that will eventually result in galaxy mergers on a cosmic timescale. The merger process is now understood to be a normal part of the evolution of galaxies, including our own Milky Way. For scale, NGC 3190 is about 75,000 light-years across at the estimated distance of Hickson 44.

L:11h20m, R:2h, G:2h15m, B:2h10m Total time: 17hr 45min

Esprit 120, FL 870mm, QHY268M, Optolong LRGB filters, Ioptron CEM70 mount. Taken from Starfront Observatory, Texas.

This setup is pictured here on a Sky-Watcher EQ6Rpro mount.

This is the faint emission nebula designated as IC 1396 in the constellation Cepheus. This region is energized by the bright, bluish central multiple star HD 206267. You can see the Elephant’s Trunk Nebula, IC 1396A, on the lower edge of this image. This has been processed using false SHO (Hubble Palette) in PixInsight. From NASA APOD, “Stars could still be forming inside the dark shapes by gravitational collapse. But as the denser clouds are eroded away by powerful stellar winds and radiation, any forming stars will ultimately be cutoff from the reservoir of star stuff.”

Tech Specs: Williams Optics Redcat, Sky-Watcher EQ6R-Pro mount, ZWO ASI2600MC-P camera, 36 x 300 seconds at 0C with darks from the library and flats taken the next morning, guided using a ZWO 30mm f/4 mini guide scope and ZWO 120 Mini. Captured using ZWO AAP and processed using PixInsight. Autofocus using the ProAstroGear Black-CAT and ZWO EAF. Image date: August 5, 2021. Location: The Dark Side Observatory, Weatherly, PA, USA (Bortle Class 4 zone).

1st light for the optolong L- Ultimate filter.

3.6 hours shot through foggy skies. trying again tonight.

Technical Info:

Optics: SGO 6" f/4 Imaging Newtonian @ 610mm FL

Explore Scientific 2" HR Coma Corrector

Camera: Canon 6D

Filter: 2" Optolong L-Pro

Mount: Losmandy GM8

Guiding: QHY Mini Guide Scope + PHD 2

Acquisition: Sequence Generator Pro

Exposure: Light (ISO 1600) - 171 subs @ 1 Minute

Calibration: Flats, Darks

​Processing : Sequator, Adobe Photoshop

The Cygnus wall cropped from the North America (NGC7000) in a HOO palette from a dual bandpass narrowband filte from Joppa, Texas, taken 2021-09-05 06:30 UT.

WO RedCat 250/51mm telescope, Optolong L-eNhance NB Filter, ZWO ASI533 MC Pro cooled camera at -5C, SW AZ-EQ5 Pro mount, ZWO ASIAIR controller. About 2 hours of exposure with 42 3min images stacked . Processed in a HOO palate in PixInsight with RC-Astro Noise/Blur/StarXTerminator plugins. Final exposure and crop in PS.

January 26th 2023 924pm 217am

Bortle 8.5 Sky. Waxing Cresent Moon, 4.93 days old and 30.07%.

Camera cooled to -4 with a gain of 110.

Lights: 79 subs for 275 minutes or 4.58 hours.

30 x 60-sec EXP - with Optolong L-Ultimate 3nm Dual Band

49 x 300-sec EXP - with Optolong L-Ultimate 3nm Dual Band

Telescope: WO RC 51

The Veil Nebula captured recently using the new QHY600 60 Megapixel Full Frame Monochrome CMOS camera mounted on the Takahashi 130 FSQ that we have the honor of testing for QHYCCD.

In this Hubble Palette version (SHO) the H-Alpha is mapped to green, SII is mapped to red and OIII is mapped to the blue channel. while the colors in this image are not the true colors, the narrowband filters used in the making of this Hubble Palette image reveal much more of the hidden gasses not visible in a broadband image, covering an area over 3 x 2 degrees of sky of are the Eastern Veil Nebula NGC6992 to the Western Veil Nebula NGC6960 (Witch’s Broom) far right with “Pickering’s Triangle” in between at the top of the image as well as “The Funnel” just below and the many knot’s and strands visible here and within this beautiful Supernova remnant.

View in High Resolution on Astrobin: www.astrobin.com/j8x7uw/

This new setup is available immediately for people wanting to subscribe to Grand Mesa Observatory's system 1.

Captured over 5 nights in July and August for a total acquisition time of 8.8 hours.

Technical Details

Captured and processed by: Terry Hancock

Location: GrandMesaObservatory.com Purdy Mesa, Colorado

Dates of Capture July 30, August 6th, 8th, 11th and 13th 2020

HA 210 min 21 x 600 sec

OIII 140 min 14 x 600 sec

SII 180 min 18 x 600 sec

Narrowband Filters by Optolong

Camera: QHY600 Monochrome CMOS Photographic version

Camera Details and Specs www.qhyccd.com/index.php?m=content&c=index&a=show...

Gain 60, Offset 76 in Read Mode Photographic 16 bit

Calibrated with dark, Bias and Flat Frames

Optics: Walter Holloway's Takahashi FSQ 130 APO Refractor @ F5

Image Scale: 1.19 arcsec/pix

Field of View: 3d 7' 41.0" x 2d 3' 5.3 (127.3 x 190.1 arcmin)

EQ Mount: Paramount ME

Image Acquisition software Maxim DL6 Pre Processing in Pixinsight Post Processed in Photoshop CC

ccd: Moravian G3-16200 with EFW + OAG

filters: Optolong LRGB and Astrodon 5-nm Ha/O3

telescope: TEC 140 f/7

mount: 10Micron GM2000 QCI

guider: Lodestar X2

exposure: L 19x20min + RGB 8x12min + Ha 12x30min (all 1x1)

location: Les Granges, 900 m (Hautes Alpes, France)

software: TheSkyX Pro, CCD Commander, Pixinsight, PS CS5

date: 29 Apr - 22 Jun 2019

Equipo Principal: ZWO ASI183MC-pro / ZWO ASI1600mm-pro + Askar ACL200 + EQ6-R-Pro + ZWO EAF + ZWO 7x2" EFW

Equipo guía: Hercules 32/130 mini guidescope, ZWO ASI 120mm mini

ASI183MC-pro:

*Gain 111, -15 º C, Optolong L-Enhance 2", 100x180"

ASI1600mm-pro:

*Gain 139, -20 º C, Sii-CCD 6.5 nm 2" Optolong, 67x180"

100 Darks

100 Flats / 100 Darkflats por filtro

Polar alignment: N.I.N.A

Adquisición: SGP 3.2

Procesado: Pixinsight 1.8.9, PS

Aglomerado aberto NGC 6704

Constelação de Scutum

Magnitude: 9,2

Descoberto pelo astrônomo alemão Friedrich August Theodor Winnecke em 1854.

Nebulosas escuras: Barnard 104, B110-B113 complex

Campo com um amplo complexo escuro. São várias as nebulosas nesse espaço de céu,

em sua maioria Nebulosas Escuras.

Geralmente esses maciços e grandes regiões de gás e poeira são berços formadores de

estrelas.

As nebulosas escuras não são iluminadas por estrelas próximas, daí a coloração

escura de sua matéria.

As nebulosas escuras são cruciais para o ciclo de vida do universo porque

fornecem as matérias-primas para a próxima geração de estrelas e planetas.

Pode parecer que você está olhando para o nada, mas nada poderia estar mais

longe da verdade.

Veil Nebula / Cygnus Loop Bi-Colour Standard HOO Palette. Multi-Session, Cropped. ASI6200MC Pro. Optolong L-eNhance. SharpStar 76EDPH + 0.8x Reducer. ASI1600MM Pro. Antllia 3.5nm NB. SharpStar 107PH. Captured in NINA. Processed in APP. Finished in Adobe CC.

This was unceremoniously cut short with a two weeks of rain and clouds so It was case of stack and the result came out very well none the less.

QHY183C -10c 52 shot 10 min

Prima Luce Essato Focus, Focus on the hour ,

Optolong LeNhance filter,

Skywatcher Black DiamondED80 OTA Rotated 53 degrees

Skywatcher NEQ 6 Pro

Guided PHD2, SGP

Pixinsight, Ps.

Equipo Principal: SW Explorer 200p + SW Coma Corrector 0.9x + ZWO ASI 1600 mm-pro + ZWO EAF + ZWO 7x2" EFW + SW EQ6-R-Pro

Equipo guía: ZWO M68 OAG + camara guia ZWO ASI 120mm mini

*Gain 139, -20 º C, Ha 7nm 2" Optolong, 80x180"

*Gain 139, -20 º C, Oiii-CCD 6.5 nm 2" Optolong, 80x180"

100 Darks

55 Flats por filtro

100 Dark-Flats por filtro

Polar Align: SharpCap 4

Adquisición: SGP 3.1

Procesado: Pixinsight 1.8.9, PS

Equipo Principal: ZWO ASI 1600 mm-pro + Long Perng S400G + LP Field Flattener + EQ6-R-Pro

Equipo guía: Guidescope Hercules 32/130 mm, camara guia ZWO ASI 178mc

*Gain 139, -25º C, Ha 7nm 2" Optolong, 172 Lights x 180"

*Gain 139, -25º C, Oiii-CCD 6.5 nm 2" Optolong, 92 Lights x 180"

*Gain 139, -25º C, Sii-CCD 6.5 nm 2" Optolong, 100 Lights x 180"

100 Darks

Adquisición y Procesado: APT v3.70, Pixinsight 1.8.6, PS

Reedición de cero aplicando muchas cosas aprendidas

The Baby Eagle is "looking" at the Seven sisters of the Plejades (M45) just outside this field of view at the lower-left corner. The dark dusty nebulosity of the Taurus Moleculair cloud is enhanced by the 10 hour exposure time. Esprit 100 f5.5 APO refractor/ Canon 6Da/ Optolong L filter. 20x120 iso 400, 78x300 and 44x240 iso1600. Stacked in DSS (2 stacks) and processed in Pixinsight (with HDR composition)

European Astronomy Picture of the day eapod.eu/6-december-2016-baby-eagle/

Knight Observatory, Tomar

Shot this at gain 200 and 4 minute exposures.... both firsts for me with the 533. I think I'll need another 90 minutes to remove all the noise on the outside of the image.

#Sh2-171 #ngc7822

#astrophotography #astrobackyard #losmandy #losmandygm8 #zwo #asi533mcpro #optolong #l-enhance

Technical Info:

Optics: SGO 6" f/4 Imaging Newtonian @ 610mm FL

Explore Scientific 2" HR Coma Corrector

Camera: ZWO ASI533MC Pro

Filter: 2" Optolong L-Enhance

Mount: Losmandy GM8

Guiding: QHY Mini Guide Scope + PHD2 Software

Acquisition: Sequence Generator Pro

Exposure: Light (Gain 200) - 23 subs @ 240 Seconds (92 Minutes)

Calibration: 50 Bias, 30 Darks, 50 Flats

​Processing: Deep Sky Stacker, Adobe Photoshop, Topaz Denoise AI, Astronomy Action Set plug in for PS, Astro Flat Pro plug in for PS

This was not a target I was after but this was away from the moon light. The filter does a good job of removing the moon light as long as you are looking AWAY from the moon. So as my real targets are right next to the rising moon I have to do a few away.

This is the closest view of Carina I have taken this now means I have used all my camera's and Lens to capture this huge Nebula to get differing views. . The learning curve also extends to the Editing process as well that is an on going learning curve. Enjoy the Jewel of the Southern hemisphere. this is the one visible Nebula if you are away from the city lights you can see with your naked eye if someone shows you where it is.

QHY 183C -10c 68 shots each night 5 min each over Two nights.

MeLE Mini PC

Pegasus Astro Pocket Mini power box

Prima Luce Essato Focus

Optolong LeNhance filter,

Skywatcher Black DiamondED80 OTA

Skywatcher NEQ 6 Pro

SVbony 50MM Guide scope

QHY QHY5L-II-M Guide camera

Guided PHD2, Nina

Pixinsight, Ps .

NGC2403

OTA: Celestron Edge 11 F/2 Hyperstar

Mount: Celestron CGE-Pro

Camera: Canon T2i, modified by Hap Griffin, IDAS D1 filter, Optolong L-eNhance filter

Guided by: Stellarvue SV60EDS and Starshoot Autoguider, PHD2.6

21 frames of 240 Sec at ISO800 With D1 filter

40 frames of 360 Sec at ISO1600 with Optolong filter

Captured with Images Plus Camera Control 6.0

Processed with Images Plus 6.5, Photoshop CS6.1