Starship Asterisk*

Imagen reprocesada de la adquisición inicial aplicando colores con paleta HOO.

IC 2177 es una región de nebulosidad que se encuentra a lo largo del límite entre las constelaciones Monoceros y Canis Major . Es una región H II aproximadamente circular centrada en la estrella Be HD 53367 . [5] Esta nebulosa fue descubierta por el astrónomo aficionado galés Isaac Roberts y fue descrita por él como "bastante brillante, extremadamente grande, irregularmente redonda, muy difusa".

2.2Hrs de integración tomados el 25 de Enero para un total de 13x600sec
calibración con darks, flats, bias.

https://www.nasa.gov/mission_pages/WISE ... 13111.html

El remanente de supernova SNR G206.9+2.3 en la constelación de monoceros un objeto rara vez fotografiado dado su bajo brillo y filamentosa forma. aprovechando el tamaño y eficiencia del sensor de la #asi2600mc con la focal del #woptics #wogt81iv #fpl53 se puede lograr con un buen número de horas de exposición y buen manejo del procesado, objeto de emisión en las bandas O[III] y H-alfa capturada con filtro de banda estrecha #optolonglextreme en subs de 900segundos x 66 para un total de 16.5 hr que deja la imagen en igualdad de condiciones en cuanto a SNR.

De dificil encuadre aun con las coordenadas del objeto, en un ligth ni siquiera se asoma, la corta focal hace que ubicarse de acuerdo a las estrellas sea aun mas complicado y al apilar las tomas el vistazo inicial apenas si muestra los tenues hilos de la supernova.
Capturado los días 2-3-8-15-16 de febrero antes de que se asomora la luna creciente.

la imagen inicial se muestra bajo las líneas de emisión del filtro en Ha y Oiii, posteriormente se utilizó un falso color en paleta hubble SHO y muestra un poco mas de detalles tenues de la nebulosa; en la versión anotada del #pixinsigth no registra aun bajo ningún catálogo.

Las coordenadas de la SNR se dan en Simbad como: RA = 06 h 48 min 40,0 s y DE = +06° 26' 00". Sin embargo, el punto central de la elipse óptica está significativamente alejado de esto. .Utilizando el AdW, puede ser RA = 06 h 49 min 04 s y DE = +06° 20' 23". Esto da como resultado 54' x 37'. La eliminación de SNR G206.9+2.3 es muy inconsistente en la literatura. Esto se debe en parte a la baja intensidad del objeto, tanto en el rango óptico como en el de radio. Graham y cols. (1982) estiman de 3 a 5 kpc (9800 - 16 000 ly), mientras que Odegard (1986)
calcula sólo 400 pc (~1300 ly). Clark y Caswell (1976) afirman 2,6 kpc (~8500 ly). En cuanto a la edad, Leahey (1986) utiliza mediciones de rayos X para estimar la edad en 60.000 años.
#azeq6 #wogt81 #zwoasi2600mcpro #galaxies #pgccatalog #deepspace #ultradeep #longexposure #narrowbandimaging #optolonglextreme #qhy5iii178c #pixinsight #snr206923 #puppis #supernovaremnant

NGC 2736 (también conocida como Nebulosa del Lápiz ) es una pequeña parte del Remanente de Supernova de Vela, ubicada cerca del Pulsar de Vela en la constelación de Vela. La apariencia lineal de la nebulosa desencadenó su nombre popular. Reside a unos 815 años luz (250 pársecs) del Sistema Solar. Se cree que se formó a partir de parte de la onda de choque del remanente de supernova Vela más grande.

La Nebulosa del Lápiz se mueve a aproximadamente 644.000 kilómetros por hora (400.000 millas por hora). El 1 de marzo de 1835, John Herschel descubrió este objeto en el Cabo de Buena Esperanza y lo describió como "eeF, L, vvmE; un rayo extraordinario, largo y estrecho de luz excesivamente débil; posición 19 ±. Al menos 20' de largo, extendiéndose mucho más allá. los límites del campo...".
Esto concuerda perfectamente con la lista de ESO-Uppsala N2736 = E260-N14, una nebulosa con dimensiones de 30'x7', ángulo de posición de 20 y notas "Filamento luminoso". Harold Corwin añade que en la película de ESO IIIa-F esta nebulosa es la mancha más brillante de un enorme remanente de supernova (Nebulosa de Goma) cuyos delicados látigos cubren el campo. Una estrella relativamente brillante se encuentra sumergida en N2736 (mencionada por Herschel). #pencilnebula es una #nebulosa de emisión, fácil de encontrar por su brillo, los detalles profundos se logran solo con un mayor tiempo de integración.

capturado desde mi patio trasero el 21 de febrero bajo luna casi llena con filtros de banda estrecha durante aproximadamente 7hr en sub de 600seg x 38, los detalles gracias a mi refractor #wogt81iv, los datos con la #asi2600mcpro.
F:50 DF:50 D:80 L:38

Un campo similar fue tomado por la ESO en https://www.eso.org/public/spain/images/eso1236c/ --> Visión de amplio campo del cielo que rodea a la Nebulosa del Lápiz @esoastronomy
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#azeq6 #wogt81 #flat6aiii #galaxies #velasupernovaremnant #deepspace #longexposure #narrowbandimaging #optolonglextreme #qhy5iii178c #pixinsight #ngc2736

bystander wrote: ↑Sat Mar 16, 2024 9:48 pm

Tiziano.caliandro wrote: ↑Sat Mar 16, 2024 9:20 pm comet and other…
https://flic.kr/ps/t43XBNx

https://www.instagram.com/p/C4lyKtHNBmm ... cwZDR3cGE=

Single shot processed with Lingtroom: “Bagno Vignoni” SI Tuscany, Italy. Saturday 16 March 2024 at 7.35pm. Andromeda galaxy, ISS, plane (intruder), meteorite and comet bottom left “12P/Pons-Brooks”.
Nikkor 85 F1.4 (1.8) on Nikon z6 1600 iso 10s

https://flic.kr/ps/t43XBNx is not a good url

Page Not Found

Sorry, the link
https://www.flickr.com/photos/200255489 ... ed-public/

Great aurora's activiy in the Lapland sky

Hi !
I'm french and I hope that you will excuse my poor English.
I went North during the last maximum of solar cycle to see auroras (northern lights), at Tromso (Norway) in October 2013 and Iceland in February 2015. For the new maximum, I planned a week in Lapland (Finland), at Sirkka, at the begining of march. Despite a cloudy weather during February and a very poor auroral activity, I was very lucky to have on the second night there (sunday 3rd of march) both a clear sky (30km north-east of Sirrka, near the Jeisjärvi lake) and a forecast of great activity (Kp about 5, density of solar wind at 18 particules/cm3, interplanetary magnetic field oriented south). The show was really great ! In fact, during this night auroras were seen even from France : https://www.cieletespace.fr/actualites/ ... ce-de-2024.
Among hundreds of pictures made to build time-lapses, I selected this one to submit :
The view is about north-west and cover almost half the sky (from trees to zenith and more). Near the top there is a part of the Great Bear. Near center Castor and Pollux. Right the Lion and left Auriga (charioteer ?).

Technical datas : Canon EOS 6D mark 2 with a fisheye lens Zenitar 16mm on a tripod, 3s at 2.8 and 6400 ISO. A very ligth treatment : auto-contrast with PhotoShop.

Here is a beta version of a time-lapse including this picture : http://www.mfavret.fr/Astro/Aurores/202 ... S1beta.mp4

Abell 1367 Leo Galaxy Cluster
https://observatorioelche.blogspot.com/ ... -alla.html
Copyright: Juan Lozano de Haro

9.65 million years ago. The light from this galaxy, NGC2403, travelled for almost 10 million years. At that time, the Earth was with the continents already formed as we know them today and was populated by apes, chimpanzees and gorillas (the ancestors of the first humans who would appear only about 7-8 million years later).
This galaxy is located in the constellation of the Giraffe and is an intermediate spiral galaxy, i.e. a gigantic cosmic pinwheel, with a diameter of about 80,000 light years (our own Milky Way has a diameter of about 105,000 light years). The presence of a large number of nebulae (mostly reddish in colour) contributes greatly to the processes that lead to the birth of new stars, and it is in fact a galaxy very rich in young, hot stars.
At the bottom right of the photo you can find a tiny white galaxy called UGC3898 300 million light years away from us that is receding at a speed of 6800 km/s.

The photo is a sum of about 24 hours of exposure time with:
Camera: ZWO ASI 6200 mono
Telescope: Tecnosky fast 300 mm - 12''
Filters: Cchromatechnology HaRGB
Chroma Blue 50 mm: 20×900″(5h)
Chroma Green 50 mm: 19×900″(4h 45′)
Chroma H-alpha 3nm Bandpass 50 mm: 32×900″(8h)
Chroma Red 50 mm: 24×900″(6h)
Mount :Ioptron CEM 120

The picture was taken between February 2nd 2024 and February 17th 2024 from our remote observatory in Castillejar, Andalusia, Spain.
Authors: Alex Battu, Luca Barcaro

NGC 2403 by Astro Divers, su Flickr

Dark Arches in the Perseus Molecular Cloud : LDN 1448

Copyright: Bogdan Borz

Lynds 1448 or Barnard 203 is a dark nebula, situated South-West from its more famous neighbor, NGC 1333. It is part of the gigantic molecular cloud in Perseus, located at around 1000 l.y. from Earth. The cloud contains over 10,000 solar masses of gas and dust covering an area of 6 by 2 degrees (Source: Wikipedia). These beautiful and dynamic dark clouds also contain Herbig-Haro objects, illuminated by proto-stars.

Telescope: Teleskop Service ONTC Newtonian 250mm @ 3.8
Mount: Skywatcher AZEQ6 Pro
Camera: ZWO ASI 2600MM Baader 36mm LRGB filters
Software: Sequence Generator Pro, Pixinsight, Photoshop
Dates : November 15, 18, 20 December 10-14 2023
L 121, R 42, G 45, B 45 x 300s gain 0 @ -10°C
Total exposure: 23h50min
Location: Personal remote observatory at E-Eye, Extremadura, Spain

Full resolution: https://www.astrobin.com/full/sit6xb/0/

Hi Asternauts,

Here is my submission: https://www.astrobin.com/f9p1v2/?nc=&nce=



This is a big project for me. I tried a lot of ways to merge different datasets. JWST, Hubble and an own remote telescope.

The idea is to use JWST resolving power and background galaxies details, Hubble resolution in the visible domain and to have real RGB colors with the ground amateur telescope. Of course resolutions and PSF are very different and that was the main challenge. I'm still in the learning phase with JWST data that shows a lot of banding noise and weird PSFs.

Processing sequence of Hubble and JWST SuperStack
f438w starmask to protect stars / LACosmic to remove cosmic particules
Star Align f814w (Hubble) on f2770w (JWST). Rejection of f900w from JWST and f1400w from Hubble.
Star alignment of all filters using distortion correction and high RANSAC tolerance. Manual dynamic alignment for rejected filters.
Superstack of all filters using the Robust Chauvenet Rejection method.

Processing sequence of Hubble
Mure denoise for each Hubble filter
Red channel 0.6*f814w + 0.2*f665w + 0.2*f1500w
Green Channel 0.2*f665w + 0.8*f606w
Blue Channel 0.8*f438w + 0.2*f606w
RGB, DBE, Chrominance, PCC, linear fit with RCOS, Masked Stretch, Curves.

Processing sequence RCOS 14'
See my post from 2019 for the acquisition details : https://www.astrobin.com/yxdc4p/?nc=&nce=
Batch PreProcessing; Luminance; Mure Denoise; RGB; DBE; chrominance; PCC; MaskedStretch; Deconvolution; LRGB; Local histogram; Star mask; Curves; Camera Raw in photoshop cc, cosmetics, Starnet 2; dynamic alignement with « RGB_Hubble »

Final Fusion
Registrations of Superstack, Hubble color calibrated and RCOS Starless. Cosmetics corrections of Hubble color calibrated image using affinity photo on ipad (16bit TIFF)
LRGB with Superstack as Luminance, Hubble color calibrated by RCOS as RGB.
Color mixing of RCOS Starless with LRGB to mostly use the RCOS colors.
Using only RCOS for colors gave poor results because of the resolution gap.

Acquisition details
Dates:
July 30, 2009
Sept. 22, 2009
Oct. 10 - 11, 2017
June 11, 2022
Frames:
Astrodon Gen1 E-Series Tru-Balance Blue: 15×1200″(5h)
Astrodon Gen1 E-Series Tru-Balance Green: 15×1200″(5h)
Astrodon Gen1 E-Series Tru-Balance Red: 15×1200″(5h)
NASA/ESA f090w NIRCAM 48mm diameter 0.31nm bandpass: 1×7086″(1h 58′ 6″)
NASA/ESA f200w NIRCAM 48mm diameter 0.52nm bandpass Pa-alpha: 1×7086″(1h 58′ 6″)
NASA/ESA f438w: 1×8910″(2h 28′ 30″)
NASA/ESA f606w: 1×3240″(54′)
NASA/ESA f665w: 1×15600″(4h 20′)
NASA/ESA f814w: 1×11865″(3h 17′ 45″)
Integration:
29h 56′ 27″

Clear skies,
Benoit Blanco

NGC 2736
(c) Patrick Winkler

NGC 5068
(c) Patrick Winkler

Gum 15
(c) Patrick Winkler

Vela SNR and Pencil Nebula by Gerhard Bachmayer

NGC 300 (c) Patrick Winkler

NGC 253 (c) Patrick Winkler

NGC 247 (c) Patrick Winkler

2024 Bode (M81) ánd Cigarro (M82) galaxies neighborhood

Author: Fermin Jiménez Najar
Best quality in the link
https://astro.najar.ca/en/gallery/deep- ... rhood.html

Lowres linked image https://astro.najar.ca/images/astrofoto ... lowres.jpg

This image was taken in 1 night from Poncitlán, Jalisco, Mexico, near the Chapala's Lake Riviera.
https://www.google.com.mx/maps/place/Ce ... BJ6BAhNEAg

March 9th, 2024
2 hours 50 min exposure,

Technical Data
Gain: 0 Offset: 50 Temp. Sensor: -10 C
Exposure: 34 shots x 5 min (2 h. 50 min)
Aperture: f/2.0
Camera: ZWO ASI 2600 MC PRO
Lens: Samyang 135 mm
Mount: Celestron AVX
March 9th, 2024.
Pocitlán, Jalisco, Mexico

Snaky Sun by Wael Omar, on Flickr

The inclination of the Earth's rotation axis causes the seasons and also the position of sunrise and sunset to change every day so the Sun rises due east and sets on due west only twice per year during the equinox but changes its position along the rest of the year.On 20th March,2024 the Earth's axis is tilted neither toward nor away from the sun, resulting in a "nearly" equal amount of daylight and darkness at all latitudes. I have photographed the sun for 12 months from a fixed place to monitor the path of the sun along the horizon. My first image was in April 2023 and I continue to shoot the sunset on the 21th day (± 2 days) of every month to show the drift of the sunset location until 20th of March 2024. The image shows the summer solstice on 21st of June as the sun sets considerably north of due west. After the summer solstice, the sun's path gradually drifts southward. By 23rd of September, the sun is at equinox, its path is again along the celestial equator and the sun sets directly on due west. The southward drift then continues until the December solstice (22nd of December), when the sun sets considerably south of due west. After the December solstice, the sun's path drifts northward, returning to the celestial equator by the March equinox 20th of March 2024.The maximum angular distance between two sunsets is the angle between the two solstices. This angle changes with the latitude of the place. It is minimum at the equator and after that increases according to the absolute value of the latitude until it causes the midnight Sun in the polar area. In my location at "Mokattam" hills at latitude 30º 00´ 05´´ N the Sun sets in :
Summer solstice 21st June @297.9º in 19:59 pm
Winter solstice 22nd December @243.2º in 17:00 pm

So the maximum drift distance is 54.7 degrees. As I started from April and ended on March the sun drift looks like a snake in the sky
Equipment: Canon 200 D18-55 mm canon lens, Each image is a 5-panel mosaic @18mm, each panel is HDR image with bracket shooting.
Settings : ISO 100, 1/20 seconds, F8. This may differ a little due to different lighting conditions along the 6 months.
Date : 21 th (±2) of each month from April 2023 to March 2024.
All images are taken from same place along the 12 months.
Choosing the location was so difficult in a very crowded city like Cairo as I wanted to have a wide view of the city and at the same time from a location not altered by crowd or civil works so I spent too much time searching for this place. The place was above “Mokattam” hills so I have to climb a little up to be in the right spot and facing the sun along its journey during the 12 months and put marks on the ground to help me get back to the exact same spot every month .
Location : Cairo/EGYPT.
Credit: Wael Omar WO/ https://www.instagram.com/waelomar_astrophotography/

Hello,
With the upcoming eclipse next month, here are some photos of the June 10, 2021 eclipse at sunrise. These were taken in NJ. Edits include: Cropping, adding the copyright to the corner, minor adjustments to exposure, contrast, etc., and in 2 images I removed powerlines that were small and just peeked out of the corners. One image had several lines in it, but I decided to leave them as that would be a significant edit, and I wanted to keep the photos as real as possible.
Copyright: Frederick Sacco

He's Back with a Bang- Sunspot 3615

The monster sunspot from a month ago, the spot formerly know as AR3590 is back and bigger and sparkier than ever.

A magnetic mess of solar activity, Sunspot 3615 as we refer him now, has rotated back into Earth view. A complex beta-delta-gamma region AR3615 has been flaring his way across the face of the sun and may have contributed, in combination with AR3614, in launching a massive solar storm towards earth MArch 23, 2024.
Watch for Aurora the night of March 24th into the 25th, 2024

Imaged from my home in Ottawa, Ontario Canada with a Quark chromosphere solar filter, the Starfield optics102 refractor, and the ZW0174MM camera. Stacked in Autostakkert and processed in IMPPG and Photoshop. (false colour added)

He's Back Sunspot3615 by Andrea Girones, on Flickr

Farewell Orion - By Ali Alobaidly



Image description:

Although many believe that the Great Orion Nebula is one of the simplest targets to photograph, I believe that it is one of the most difficult targets to truly master. With its wide dynamic range and elusive core details, this nebula continues to amaze and mesmerize. The Image you see above was captured using a 384mm triplet apochromatic refractor in both broadband, to emphasize the nebula's natural colour, and in narrowband to give those hydrogen alpha emission some shine. Indeed, exposures that are 3 minutes long may blow up the core of the nebula out of proportion, but with modern data stretching techniques and histogram manipulation, the core's intense light can be pushed back to reveal the stellar nursery's intricate core without sacrificing too much contrast or background detail. Every season, I point my telescope towards Orion, so, for my final image of the winter skies, I present this farewell as I turn my attention (and my telescopes) towards those long awaited spring galaxies.



Acquisition details:
Dates: December 13, 2023 · December 14, 2023 · December 15, 2023


Frames:
RGB with a One-Shot Colour Camera: 207×180s (10h21’)
Hydrogen- Alpha With a Mono Camera: 91x300s (7h35')



Setup:
Telescope: WO GT81 + small guide scope + WO Flat6A III 0.8x Reducer / Flattener
Mount: ZWO AM5
Imaging Cameras: ASI2600MM pro + ASI2600MC pro
Guiding Camera : ASI120MM-S for guiding

Perseids '23
https://i.imgur.com/A0NmYb5.jpeg The image shows 29 meteors from last year's Perseids meteor shower. Instead of the usual widefield lens, I used a fast, short-telephoto lens - with this setup I could catch less meteors, but the captured meteors show more details and color. One meteor was almost point-like as it was heading towards us. The radiant is not a well-defined point because the images were taken for 4 days, so the diurnal drift is visible.
The background shows the Heart- and Soul Nebula, the Double Cluster in the bottom-left, the Vdb 14 reflection nebula in the top-left corner, and many other deep-sky objects (including 4 planetary nebulae).

Time and location: 2023. August 11.-14., Kócsújfalu, Hortobágy National Park, Hungary (meteors), 2023. November-December (several nights), Ipolyszög, Hungary (background)
Exposure time: 10s/meteor, 9h 12m total for the background
Camera: Canon R7
Lens: Sigma 105mm f/1.4
Mount: Fornax LighTrack II, Avalon EVO Zero

Gábor Szeleczki

A full-disk photo of the Sun taken with an H-Alpha filter on 23 March 2024. The active regions 3614 and 3615 are almost in the center, the latter in particular is very bright due to an ongoing flare. Many protuberances on the edge complete the picture

Sun in H-Alpha - March 23rd 2024 by Alessandro Carrozzi, su Flickr

Sun in H-Alpha - March 23rd 2024 by Alessandro Carrozzi, su Flickr

Hello, my name is Maximiliano José Falieres and i'm an Amateur astrophotographer from Argentina. In this case, i want to share with you this three pictures of a Total Solar Eclipse ocurred in the south of Argentina on 14th of December of 2020, showing the begining, the full cover of the sun and the ending. For me this images have a lot of meanings, considering the context of the pandemic situation at that time and some family issues.

Also there are two solar systems objects here, and knowing the sizes of the Moon and the Sun, we can calculate the size of the solar flares. I messaured the most biggest is around 56.000 kms from the surface to the top, so this means that we can put together 5 planets Earths in line.

I hope that you like them

Before the Totally

Total Solar Eclipse 14-12-2020
by Maximiliano Falieres, en Flickr

During the Totally

Total Solar Eclipse 14-12-2020
by Maximiliano Falieres, en Flickr

After the Totally

Total Solar Eclipse 14-12-2020
by Maximiliano Falieres, en Flickr

Thank you

And clear skies!

NGC 5128
(c) Patrick Winkler