IC4628

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Exposure time: 181 minutes

Field of view: 90.4' x 59.4'

Date: 2021-08-06

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Full details: cosmicfocus.wordpress.com/2021/08/11/ic-4628-2/

IC 4628 Prawn Nebula 43 x 180sec subs stacked in DSS , shot with Canon 5DSr on a Sky Watcher Quattro 250 F4 with optolong L Enhance filter .

equipmnent: Sigma 28mmF1.4 DG HSM Art and Canon EOS 5Dmk2-sp2, modified by Seo-san on Takahashi EM-200FG-Temma 2Z-BL, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, Starlight Xpress Lodestar Autoguider, and PHD2 Guiding

exposure: 6 times x 15 minutes, 4 x 4 min, 8 x 1 minute at ISO 1,600 and f/3.5

site: 2,430m above sea level at lat. 24 39 52 South and long. 70 16 11 West near Cerro Armazones Chile

Atacama Desert just before Sunset July 2019

www.flickr.com/photos/hiroc/48588682472

The shape of Gegenschein looked not round but irregular.

Equipment: Sigma 35mmF1.4 Art, IDAS Clear Filter, and EOS R6-SP5, modified by Seo San on ZWO AM5n Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 174MM-mini, and PHD2 Guiding

Exposure: 10 times x 600 seconds, 9 x 240 sec, and 10 x 60 seconds at ISO 1,600 and f/3.2

site: 2,560m above sea level at lat. 24 23 21 South and long. 70 12 01 West near the peak of Cerro Ventarrones Chile

Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild, and guide error RMS was 0.73". Sky was dark, and SQML was 21.77 at the night.

Jupiter was in Scorpius then and bright in the left half on the frame. Zodiacal light was crossing obliquely near the center of the frame.

Here is a bit closer frame of the area, taken with 105mm lens.

www.flickr.com/photos/hiroc/48645404297

equipmnent: Sigma 40mmF1.4 DG HSM Art and Canon EOS 6D-sp4, modified by Seo-san on Takahashi EM-200FG-Temma 2Z-BL, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, Starlight Xpress Lodestar Autoguider, and PHD2 Guiding

exposure: 10 times x 15 minutes, 8 x 4 min, 4 x 1 minute at ISO 1,600 and f/4.0

site: 2,430m above sea level at lat. 24 39 52 South and long. 70 16 11 West near Cerro Armazones Chile

Equipment: Sigma 35mmF1.4 Art, IDAS NB12 Dual Narrowband Filter or Clear Filter, and EOS R6-SP5, modified by Seo San on ZWO AM5n Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 174MM-mini, and PHD2 Guiding

Exposure: 7 times x 1,200 seconds, 8 x 240 sec, and 10 x 60 seconds at ISO 6,400 and f/3.2 with Dual Narrowband Filter and 10 times x 600 seconds, 9 x 240 sec, and 10 x 60 seconds at ISO 1,600 and f/3.2 with Clear Filter

site: 2,560m above sea level at lat. 24 23 21 South and long. 70 12 01 West near the peak of Cerro Ventarrones Chile

Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild, and guide error RMS was 0.73". Sky was dark, and SQML was 21.77 at the night.

Prawn Nebula, IC 4628, is an emission nebula located in the Sagittarius Arm of the Milky Way, around 6,000 light-years from Earth in the constellation Scorpius. This images is 3 hours total integration time 1 hour each of Ha, Oiii and Sii. The Oiii did not pick up any nebulosity, and the Sii was very dim, It needs a lot more time on those channels.

The data for the Prawn was captured a few months ago when we had a run of clear nights in Melbourne. I was able to capture the Ha on one night, the Oiii on the next, but when trying for the Sii, got clouded out, and so never finished the SHO project. Hopefully I can add the the Sii next year and finish the SHO image.

Equipment Details:

• 6 Inch GSO Ritchey-Chretien (RC) F9 1370mm Focal length

• Skywatcher NEQ6 Mount

• ZWO ASI1600mm Cmos Camera cooled to -10'c

• ZWO EFW7 Filter Wheel

• Baader 36mm unmounted Ha, Oiii and Sii 7nm Filters

• Orion ST80 80mm Guide Scope

• ZWO ASI120mm mini Guide Camera

• ZWO ASIAIR Pro for full automation

• Processed in PixInsight

Exposure Details:

• Ha 59X180 seconds - Bin 1x1

• Oiii 60X180 seconds - Bin 1x1

• Oiii 60X180 seconds - Bin 1x1

Total Integration Time: 3 hours 57 minutes.

Equipment: Sigma 35mmF1.4 Art, IDAS NB12 Dual Narrowband Filter, and EOS R6-SP5, modified by Seo San on ZWO AM5n Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 174MM-mini, and PHD2 Guiding

Exposure: 7 times x 1,200 seconds, 8 x 240 sec, and 10 x 60 seconds at ISO 6,400 and f/3.2

site: 2,560m above sea level at lat. 24 23 21 South and long. 70 12 01 West near the peak of Cerro Ventarrones Chile

Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild, and guide error RMS was 0.73". Sky was dark, and SQML was 21.77 at the night.

Emission nebulae got brighter and bigger thanks to the application of the dual narrowband filter, though reflection nebulae got fainter and smaller.

Gegenschein looked not round but irregular on the frame taken with clear filter, but the irregular parts of Gegenschein looked reddish a bit on this frame taken with dual narrowband filter. It means that the irregular parts were not Gegenschein but faint integrated flux nebulae containing hydrogen-alpha light from stars nearby.

Equipment: Sigma 35mmF1.4 Art, IDAS NB12 Dual Narrowband Filter, and EOS R6-SP5, modified by Seo San on ZWO AM5n Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 174MM-mini, and PHD2 Guiding

Exposure: 7 times x 1,200 seconds, 8 x 240 sec, and 10 x 60 seconds at ISO 6,400 and f/3.2

site: 2,560m above sea level at lat. 24 23 21 South and long. 70 12 01 West near the peak of Cerro Ventarrones Chile

Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild, and guide error RMS was 0.73". Sky was dark, and SQML was 21.77 at the night.

Capture details: www.astrobin.com/422493/

equipment: Sigma 105mmF1.4 DG HSM Art and Canon EOS 6D-sp4, modified by Seo-san on Takahashi EM-200FG-Temma 2Z-BL, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, Starlight Xpress Lodestar Autoguider, and PHD2 Guiding

exposure: 8 times x 15 minutes, 5 x 4 min, and 7 x 1 minute at ISO 1,600 and f/3.2

site: 2,430m above sea level at lat. 24 39 52 South and long. 70 16 11 West near Cerro Armazones Chile

The shape of Gegenschein looked not round but irregular.

Equipment: Sigma 35mmF1.4 Art, IDAS Clear Filter, and EOS R6-SP5, modified by Seo San on ZWO AM5n Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 174MM-mini, and PHD2 Guiding

Exposure: 10 times x 600 seconds, 9 x 240 sec, and 10 x 60 seconds at ISO 1,600 and f/3.2

site: 2,560m above sea level at lat. 24 23 21 South and long. 70 12 01 West near the peak of Cerro Ventarrones Chile

Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild, and guide error RMS was 0.73". Sky was dark, and SQML was 21.77 at the night.

This is a true/natural color image of the Prawn Nebula, IC 4628. Rarely imaged by amateur astronomers.

IC 4628 is an emission nebula located the constellation Scorpius and close to the Milky Way in the sky, and is around 6000 light-years from Earth.

This image was taken with a full spectrum modded DSLR through a 80mm refractor for a total exposure of 133.5 minutes.

IC4628 is located in the constellation of Scorpius around 6000 light years from earth.

(this is only a 'portion' of the actual nebula).

Shot from Newport area Sydney Australia.

Exposure Time: 10mins per exposure/shot equalling:

4hrs of Hydrogen Alpha.

Equipment used:

Telescope: William Optics 110Triplet

Mount : Paramount MYT

Camera: Atik One+ OAG

Filters: Astronomik HA 6nm

Software (Capture): The SkyX

Processing : Pixinsight.

I like this framing of summer southern milkyway.

Stars got trailed near the right upper corner due to differential atmospheric refraction near the horizon during the later part of the imaging sessions.

equipment: Sigma 40mmF1.4 Art and EOS 6D-SP4, modified by Seo-san on ZWO AM5 equatorial mount on the genuine tripod with counter weight 4.8kg, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, ZWO ASI 120MM-mini, and PHD2 Guiding

exposure: 8 times x 900 seconds, 3 x 240 sec, 4 x 60 seconds at ISO 1,600 and f/3.2

site: 2,434m above sea level at lat. 24 39 52 south and long. 70 16 11 west near Cerro Armazones in Sierra Vicuña Mackenna in Coast Range of Chile

Ambient temperature was around 10 degrees Celsius or 34 degrees Fahrenheit. Wind was mild. Sky was dark, and SQML reached 21.83 at the night.

This is a Narrowband (AKA SHO or Hubble palette) image of the Prawn Nebula, IC 4628. Rarely imaged by amateur astronomers.

IC 4628 is an emission nebula located the constellation Scorpius and close to the Milky Way in the sky, and is around 6000 light-years from Earth.

This image was taken with a full spectrum modded DSLR through a 80mm refractor for a total exposure time of 1160 minutes through SII, HAlpha and OIII filters.

Trumpler 24

Skywatcher HEQ5

WO Gran Turismo 71

ZWO ASI2600MC

RCW 114, SNR G343.0-6.0 is vast and faint here.

equipment: Sigma 105mmF1.4 Art and EOS 6D-SP4, modified by Seo-san on ZWO AM5 equatorial mount on the genuine tripod with counter weight 4.8kg, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, ZWO ASI 120MM-mini, and PHD2 Guiding

exposure: 5 times x 900 seconds, 5 x 240 sec, 7 x 60 seconds at ISO 1,600 and f/3.2

site: 2,434m above sea level at lat. 24 39 52 south and long. 70 16 11 west near Cerro Armazones in Sierra Vicuña Mackenna in Coast Range of Chile

Ambient temperature was around 10 degrees Celsius or 34 degrees Fahrenheit. Wind was mild. Sky was dark, and SQML reached 21.83 at the night.

Na grande constelação do Escorpião, situada entre as estrelas Zeta e Mu Scorpii encontra-se esta nebulosa de emissão, catalogada como IC 4628 e conhecida no meio astrofotográfico como Nebulosa do Camarão. A nebulosa é uma das regiões gigantes de hidrogênio brilhante que delineia os braços espirais em nossa galáxia [1]. Ao lado esquerdo da nebulosa, encontram-se estrelas azuis extremamente quentes de classes espectrais B. Estas estrelas fazem parte do aglomerado estelar aberto catalogado como Trumpler 24. O tamanho angular deste objeto no céu equivale ao tamanho de uma lua cheia.

Mas o que estaria moldando o formato inusitado desta nebulosa? Fora do campo desta imagem, no lado esquerdo, há um outro aglomerado estelar aberto jovem conhecido como NGC 6231, distante de nós 4077 anos-luz [2]. Estudos apontam que a nuvem molecular em que NGC 6231 se formou já se dissipou mas que no entorno ainda existem nuvens moleculares [3]. Uma dessas nuvens é justamente a nebulosa desta imagem. O formato de IC 4628 estaria relacionado com o surgimento de NGC 6231, que dispersou a nuvem molecular através da radiação ultravioleta das estrelas do aglomerado, ventos estelares e até mesmo por uma explosão de supernova que pode ter ocorrido há 3 milhões de anos atrás. Esta explosão inclusive lançou no espaço sua estrela companheira binária HD 153919, uma estrela de alta massa que encontra-se a 4° distante de NGC 6231.

Fontes:

[1] Stars and Planets - page 320, Pasachoff J. M. - Peterson Field Guides, Fourth Edition

[2] simbad.u-strasbg.fr

[3] The Structure of the Young Star Cluster NGC 6231. II. Structure, Formation, and Fate - Kuhn M. A., Getman K. V. et al - The Astronomical Journal, Volume 154, Number 6 - November, 2017

Registrei esta imagem durante três noites, em 15, 16 e 17 de julho de 2018 na comunidade rural Riacho do Mato - município de São Romão - Minas Gerais - Brasil. Um local com escala de Bortle entre 1 e 2.

Dados técnicos:

Gain: 0, Offset: 10, temperatura da câmera: -20°C, exposição total de 4h30m, darks, flats e dark flats aplicados.

O filtro H-Alpha foi utilizado tanto para enriquecer o canal Vermelho como para o canal de luminância.

Diante disto a composição da imagem é dita como HaHaRGB.

Filtros

H-Alpha: 24 x 300s / Bin 1x1

Vermelho: 10 x 300s / Bin 1x1

Verde: 10 x 300s / Bin 1x1

Azul: 10 x 300s / 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

- Auto guiagem com câmera ZWO ASI120MM em OAG

- Roda de Filtros ZWO 8 posições

- Filtros Optolong 1,25" H-Alpha 7nm, 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

Resolução .............. 0.651 arcsec/px

Rotação ................ 90.474 deg

Distância focal .......... 1204.47 mm

Pixel size .............. 3.80 um

Campo de visão ........... 49' 49.5" x 37' 2.3"

Centro da imagem ............ RA: 16 56 56.286 Dec: -40 27 16.37

Equipment: Sigma 35mmF1.4 Art, IDAS NB12 Dual Narrowband Filter, and EOS R6-SP5, modified by Seo San on ZWO AM5n Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 174MM-mini, and PHD2 Guiding

Exposure: 7 times x 1,200 seconds, 8 x 240 sec, and 10 x 60 seconds at ISO 6,400 and f/3.2

site: 2,560m above sea level at lat. 24 23 21 South and long. 70 12 01 West near the peak of Cerro Ventarrones Chile

Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild, and guide error RMS was 0.73". Sky was dark, and SQML was 21.77 at the night.

equipment: Sigma 105mmF1.4 DG HSM Art and Canon EOS 6D-sp4, modified by Seo-san on Takahashi EM-200FG-Temma 2Z-BL, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, Starlight Xpress Lodestar Autoguider, and PHD2 Guiding

exposure: 8 times x 15 minutes, 5 x 4 min, and 7 x 1 minute at ISO 1,600 and f/3.2

site: 2,430m above sea level at lat. 24 39 52 South and long. 70 16 11 West near Cerro Armazones Chile

This is the final version of the series.

Equipment: Sigma 35mmF1.4 Art, IDAS NB12 Dual Narrowband Filter or Clear Filter, and EOS R6-SP5, modified by Seo San on ZWO AM5n Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 174MM-mini, and PHD2 Guiding

Exposure: 7 times x 1,200 seconds, 8 x 240 sec, and 10 x 60 seconds at ISO 6,400 and f/3.2 with Dual Narrowband Filter and 10 times x 600 seconds, 9 x 240 sec, and 10 x 60 seconds at ISO 1,600 and f/3.2 with Clear Filter

site: 2,560m above sea level at lat. 24 23 21 South and long. 70 12 01 West near the peak of Cerro Ventarrones Chile

Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild, and guide error RMS was 0.73". Sky was dark, and SQML was 21.77 at the night.

equipmnent: Sigma 40mmF1.4 DG HSM Art and Canon EOS 6D-sp4, modified by Seo-san on Takahashi EM-200FG-Temma 2Z-BL, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, Starlight Xpress Lodestar Autoguider, and PHD2 Guiding

exposure: 9 times x 15 minutes, 5 x 4 min, 5 x 1 minute at ISO 1,600 and f/4.0

site: 2,430m above sea level at lat. 24 39 52 South and long. 70 16 11 West near Cerro Armazones Chile

Emission nebulae got brighter and bigger thanks to the application of the dual narrowband filter, though reflection nebulae got fainter and smaller.

Gegenschein looked not round but irregular on the frame taken with clear filter, but the irregular parts of Gegenschein looked reddish a bit on this frame taken with dual narrowband filter. It means that the irregular parts were not Gegenschein but faint integrated flux nebulae containing hydrogen-alpha light from stars nearby.

Equipment: Sigma 35mmF1.4 Art, IDAS NB12 Dual Narrowband Filter, and EOS R6-SP5, modified by Seo San on ZWO AM5n Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 174MM-mini, and PHD2 Guiding

Exposure: 7 times x 1,200 seconds, 8 x 240 sec, and 10 x 60 seconds at ISO 6,400 and f/3.2

site: 2,560m above sea level at lat. 24 23 21 South and long. 70 12 01 West near the peak of Cerro Ventarrones Chile

Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild, and guide error RMS was 0.73". Sky was dark, and SQML was 21.77 at the night.

I like this framing of summer southern milkyway.

equipment: Sigma 40mmF1.4 Art and EOS 6D-SP4, modified by Seo-san on ZWO AM5 equatorial mount on the genuine tripod with counter weight 4.8kg, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, ZWO ASI 120MM-mini, and PHD2 Guiding

exposure: 8 times x 900 seconds, 3 x 240 sec, 4 x 60 seconds at ISO 1,600 and f/3.2

site: 2,434m above sea level at lat. 24 39 52 south and long. 70 16 11 west near Cerro Armazones in Sierra Vicuña Mackenna in Coast Range of Chile

Ambient temperature was around 10 degrees Celsius or 34 degrees Fahrenheit. Wind was mild. Sky was dark, and SQML reached 21.83 at the night.

equipmnent: Sigma 40mmF1.4 DG HSM Art and Canon EOS 6D-sp4, modified by Seo-san on Takahashi EM-200FG-Temma 2Z-BL, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, Starlight Xpress Lodestar Autoguider, and PHD2 Guiding

exposure: 9 times x 15 minutes, 5 x 4 min, 5 x 1 minute at ISO 1,600 and f/4.0

site: 2,430m above sea level at lat. 24 39 52 South and long. 70 16 11 West near Cerro Armazones Chile

equipmnent: Sigma 28mmF1.4 DG HSM Art and Canon EOS 5Dmk2-sp2, modified by Seo-san on Takahashi EM-200FG-Temma 2Z-BL, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, Starlight Xpress Lodestar Autoguider, and PHD2 Guiding

exposure: 6 times x 15 minutes, 4 x 4 min, 8 x 1 minute at ISO 1,600 and f/3.5

site: 2,430m above sea level at lat. 24 39 52 South and long. 70 16 11 West near Cerro Armazones Chile

Atacama Desert just before Sunset July 2019

www.flickr.com/photos/hiroc/48588682472

The shape of Gegenschein looked not round but irregular.

Equipment: Sigma 35mmF1.4 Art, IDAS Clear Filter, and EOS R6-SP5, modified by Seo San on ZWO AM5n Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 174MM-mini, and PHD2 Guiding

Exposure: 10 times x 600 seconds, 9 x 240 sec, and 10 x 60 seconds at ISO 1,600 and f/3.2

site: 2,560m above sea level at lat. 24 23 21 South and long. 70 12 01 West near the peak of Cerro Ventarrones Chile

Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild, and guide error RMS was 0.73". Sky was dark, and SQML was 21.77 at the night.

i could enjoy imaging of the object during the residual time at the last night in Atacama Desert Chile. Ring-shaped vast hydrogen-alpha emission was clear near the center like Flag of Turkey.

Equipment: Sigma 35mmF1.4 DG HSM Art, IDAS NB12 Dual Narrow Band Filter, and EOS R6-SP5, modified by Seo San on ZWO AM5 Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 120MM-mini, and PHD2 Guiding

Exposure: 4 times x 60 seconds, 3 x 240 sec, and 4 times x 1,080 seconds at ISO 6,400 and f/3.2

site: 2,430m above sea level at lat. 24 38 55 South and long. 70 16 52 West near Cerro Armazones Chile

SQML was 21.55 at the night. Ambient temperature was around 6 degrees Celsius or 43 degrees Fahrenheit.

Jupiter was in Scorpius then and bright in the left half on the frame. Zodiacal light was crossing obliquely near the center of the frame.

Here is a bit closer frame of the area, taken with 105mm lens.

www.flickr.com/photos/hiroc/48645263811

equipmnent: Sigma 40mmF1.4 DG HSM Art and Canon EOS 6D-sp4, modified by Seo-san on Takahashi EM-200FG-Temma 2Z-BL, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, Starlight Xpress Lodestar Autoguider, and PHD2 Guiding

exposure: 10 times x 15 minutes, 8 x 4 min, 4 x 1 minute at ISO 1,600 and f/4.0

site: 2,430m above sea level at lat. 24 39 52 South and long. 70 16 11 West near Cerro Armazones Chile

i could enjoy imaging of the object during the residual time at the last night in Atacama Desert Chile. Ring-shaped vast hydrogen-alpha emission was clear near the center like Flag of Turkey.

Equipment: Sigma 35mmF1.4 DG HSM Art, IDAS NB12 Dual Narrow Band Filter, and EOS R6-SP5, modified by Seo San on ZWO AM5 Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 120MM-mini, and PHD2 Guiding

Exposure: 4 times x 60 seconds, 3 x 240 sec, and 4 times x 1,080 seconds at ISO 6,400 and f/3.2

site: 2,430m above sea level at lat. 24 38 55 South and long. 70 16 52 West near Cerro Armazones Chile

SQML was 21.55 at the night. Ambient temperature was around 6 degrees Celsius or 43 degrees Fahrenheit.

This is the Prawn Nebula, classification IC 4628.

It's an Emission Nebula about 6,000 light years from Earth in the constellation of Scorpius.

Taken with an ED100 Refractor and an unmodified Canon 70D. 4x240 seconds at ISO 1600.

Image of IC 4628, an emission nebula in the constellation Scorpius. First light with my new GSO 203mm f/4 reflector. Light frames taken during a full moon.

187x180s

QHY8L

GSO 203mm f4 reflector

Sky-Watcher NEQ6-Pro

Optolong L-Enhance filter

Equipment: Sigma 35mmF1.4 Art, IDAS NB12 Dual Narrowband Filter, and EOS R6-SP5, modified by Seo San on ZWO AM5n Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 174MM-mini, and PHD2 Guiding

Exposure: 7 times x 1,200 seconds, 8 x 240 sec, and 10 x 60 seconds at ISO 6,400 and f/3.2

site: 2,560m above sea level at lat. 24 23 21 South and long. 70 12 01 West near the peak of Cerro Ventarrones Chile

Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild, and guide error RMS was 0.73". Sky was dark, and SQML was 21.77 at the night.

Sometimes called the Prawn, Banana or Waterfall nebula. This spectacular nebula has only one official title and that is it's Index Catalog designation, IC4628.

The shape of Gegenschein looked not round but irregular.

Equipment: Sigma 35mmF1.4 Art, IDAS Clear Filter, and EOS R6-SP5, modified by Seo San on ZWO AM5n Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 174MM-mini, and PHD2 Guiding

Exposure: 10 times x 600 seconds, 9 x 240 sec, and 10 x 60 seconds at ISO 1,600 and f/3.2

site: 2,560m above sea level at lat. 24 23 21 South and long. 70 12 01 West near the peak of Cerro Ventarrones Chile

Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild, and guide error RMS was 0.73". Sky was dark, and SQML was 21.77 at the night.

The Prawn Nebula in Hydrogen -Oxygen-Oxygen

Imaged close to full moon September 2021

just under three hours of integration. One and a half hours in OIII and one hour and twenty minutes in H alpha. Both imaging sessions cut short by cloud.

Bortle 6 location. Moon phase 87% when imaging in H alpha and 93% when imaging in OIII

Equipment details:

EQ6/ ED 80/ AstroTech 1:1 Flattener/Baader 7 nm H alpha Filter/SvBony 7 nm OIII filter

Software:

N.I.N.A/ PhD2/ AstroPixel Processor/ Photoshop CS6 with camera RAW plug in/Topaz AI

RCW 114, SNR G343.0-6.0 is vast and faint here.

equipment: Sigma 105mmF1.4 Art and EOS 6D-SP4, modified by Seo-san on ZWO AM5 equatorial mount on the genuine tripod with counter weight 4.8kg, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, ZWO ASI 120MM-mini, and PHD2 Guiding

exposure: 5 times x 900 seconds, 5 x 240 sec, 7 x 60 seconds at ISO 1,600 and f/3.2

site: 2,434m above sea level at lat. 24 39 52 south and long. 70 16 11 west near Cerro Armazones in Sierra Vicuña Mackenna in Coast Range of Chile

Ambient temperature was around 10 degrees Celsius or 34 degrees Fahrenheit. Wind was mild. Sky was dark, and SQML reached 21.83 at the night.

The shape of Gegenschein looked not round but irregular.

Equipment: Sigma 35mmF1.4 Art, IDAS Clear Filter, and EOS R6-SP5, modified by Seo San on ZWO AM5n Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 174MM-mini, and PHD2 Guiding

Exposure: 10 times x 600 seconds, 9 x 240 sec, and 10 x 60 seconds at ISO 1,600 and f/3.2

site: 2,560m above sea level at lat. 24 23 21 South and long. 70 12 01 West near the peak of Cerro Ventarrones Chile

Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild, and guide error RMS was 0.73". Sky was dark, and SQML was 21.77 at the night.

Equipment: Sigma 35mmF1.4 Art, IDAS NB12 Dual Narrowband Filter or Clear Filter, and EOS R6-SP5, modified by Seo San on ZWO AM5n Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 174MM-mini, and PHD2 Guiding

Exposure: 7 times x 1,200 seconds, 8 x 240 sec, and 10 x 60 seconds at ISO 6,400 and f/3.2 with Dual Narrowband Filter and 10 times x 600 seconds, 9 x 240 sec, and 10 x 60 seconds at ISO 1,600 and f/3.2 with Clear Filter

site: 2,560m above sea level at lat. 24 23 21 South and long. 70 12 01 West near the peak of Cerro Ventarrones Chile

Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild, and guide error RMS was 0.73". Sky was dark, and SQML was 21.77 at the night.

This is the final version of the series.

Equipment: Sigma 35mmF1.4 Art, IDAS NB12 Dual Narrowband Filter or Clear Filter, and EOS R6-SP5, modified by Seo San on ZWO AM5n Equatorial Mount, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 174MM-mini, and PHD2 Guiding

Exposure: 7 times x 1,200 seconds, 8 x 240 sec, and 10 x 60 seconds at ISO 6,400 and f/3.2 with Dual Narrowband Filter and 10 times x 600 seconds, 9 x 240 sec, and 10 x 60 seconds at ISO 1,600 and f/3.2 with Clear Filter

site: 2,560m above sea level at lat. 24 23 21 South and long. 70 12 01 West near the peak of Cerro Ventarrones Chile

Ambient temperature was 11 degrees Celsius or 52 degrees Fahrenheit. Wind was mild, and guide error RMS was 0.73". Sky was dark, and SQML was 21.77 at the night.

Nikon D7100

Focal Length: 50mm

2 6-image-stacks (median) stitched in Photoshop

Optimize Image: Normal

Color Mode: aRGB

Long Exposure NR: Off

High ISO NR: Off

2016/03/13 03:03:48.2

Exposure Mode: Manual

White Balance: Direct sunlight

RAW lossless compressed (14-bit)

Metering Mode: Multi-Pattern

AF Mode: Manual

5 sec - F/2

Flash Sync Mode: Not Attached

Exposure Comp.: 0 EV

Sharpening: Normal

Lens: 50mm F/1.4 D

Sensitivity: ISO 1600

Image Comment: (c) Gerard Prins (+56) 22758 7209

Sii 38x300s

Ha 64x300s

Oiii 42x300s

Bortle 8 urban sky

TS Photoline 80 F6 + ASI1600mm

Left part taken in July 2018

Right part taken in July 2016

38x300" + 8x600"

QHY8L

Sky-Watcher Equinox 80 ED

Hard-to-photograph nebula :(

via Facebook ift.tt/2hbi8oy

An attempt to image IC 4628 with the camera QHY21 and the telescope Sky-Watcher Equinox 80 ED.

ED80

CG5

QHY8

6 x 10 minutes

Baader 7 nm H alpha filter

first quarter moon

problems with guiding in DEC caused me to abandon the imaging run, was hoping to collect 4 hours or more of data

CG5 now needs some TLC there is just unacceptable backlash

From Lobster Nebula to Dragons of Ara, these nebulae lie from the center to the south side of the milkyway arm, they are beautiful emission nebulas that I plan to photograph each one individually in the future.

📌Anápolis - Goiás, Brazil. 07-19-22 and 07-20-22

📷Canon 600d Astromod

🔍Canon EF 50mm f/1.8 II

🔭Fixed Tripod

☄️@novaastrophotos

📋 Exif: 64,7 minutes of total exposure.

19-07

Lights: 419x4" 3200 f4

Darks: 100x4"

Bias: 51x1/4000s

20-07

Lights: 552x4" 3200 f3.2

Darks: 100x4"

Bias: 51x1/4000s

Stacking and Processing done with Pixinsight and Photoshop.